The Alkali Metal Is Lithium Patents (Class 429/322)
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Patent number: 7008726Abstract: The invention provides an electrochemical cell which includes a first electrode and a second electrode which is a counter electrode to said first electrode, and an electrolyte material interposed there between. The first electrode comprises an electrode active material represented by the general nominal formula Aa[Mm,MIn,MIIo](XY4)dZe, wherein at least one of M, MI and MII is a redox active element, 0<m,n,o?4, and ½[V(MI)+V(MII)]=V(M), wherein V(M) is the valence state of M, V(MI) is the valence state of MI, and V(MII) is the valence state of MII.Type: GrantFiled: January 22, 2004Date of Patent: March 7, 2006Assignee: Valence Technology, Inc.Inventors: George Adamson, Jeremy Barker, M. Yazid Saidi
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Patent number: 6986965Abstract: An electrically powered device includes a shell, and a battery integrated with the shell. The electrically powered device also includes a trace, and a site adapted to receive an electrically powered component, wherein the battery, the trace and the electrically powered component form a portion of a circuit. The electrically shell may be a portion of an enclosure. The battery is formed within the shell and may be comprised of one or a plurality of deposited layers.Type: GrantFiled: March 23, 2001Date of Patent: January 17, 2006Assignee: Cymbet CorporationInventors: Mark Lynn Jenson, Jody Jon Klaassen, Victor Henry Weiss, Jenn-Feng Yan
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Patent number: 6982132Abstract: A rechargeable, stackable, thin film, solid-state lithium electrochemical cell, thin film lithium battery and method for making the same is disclosed. The cell and battery provide for a variety configurations, voltage and current capacities. An innovative low temperature ion beam assisted deposition method for fabricating thin film, solid-state anodes, cathodes and electrolytes is disclosed wherein a source of energetic ions and evaporants combine to form thin film cell components having preferred crystallinity, structure and orientation. The disclosed batteries are particularly useful as power sources for portable electronic devices and electric vehicle applications where high energy density, high reversible charge capacity, high discharge current and long battery lifetimes are required.Type: GrantFiled: August 14, 2000Date of Patent: January 3, 2006Assignee: Trustees of Tufts CollegeInventors: Ronald B. Goldner, Te-Yang Liu, Mark A. Goldner, Alexandra Gerouki, Terry E. Haas
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Patent number: 6924067Abstract: A polymer electrolyte includes a substrate polymer, a branched polymer, and a lithium salt. The branched polymer has a main chain whose repeating unit is composed of an oligoethylene oxide chain and a connector molecule bonded to the oligoethylene oxide chain. The branched polymer can be a hyperbranched polymer. The polymer electrolyte can further include a composite oxide and/or a boroxine compound. The polymer electrolyte is good in terms of the ionic conductivity, and exhibits a high ionic conductivity especially at low temperatures. When the polymer electrolyte is used to make polymer lithium batteries, the resulting polymer lithium batteries shows improved charge-discharge cycle characteristics. In particular, it is possible to operate the polymer lithium batteries at low temperatures.Type: GrantFiled: April 9, 2003Date of Patent: August 2, 2005Assignees: Toyota Jidosha Kabushiki Kaisha, Genesis Research Institute, Inc.Inventors: Takahito Ito, Osamu Yamamoto, Tatsuo Fujinami
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Patent number: 6924066Abstract: The invention relates to the use of salt-based compounds as additives in electrolytes for improvinq the properties of electrochemical cells.Type: GrantFiled: February 25, 2003Date of Patent: August 2, 2005Assignee: Merck Patent GmbHInventors: Udo Heider, Michael Schmidt, Anja Amann, Marlies Niemann, Andreas Kühner
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Patent number: 6911280Abstract: Disclosed are compositions and methods for alleviating the problem of reaction of lithium or other alkali or alkaline earth metals with incompatible processing and operating environments by creating a ionically conductive chemical protective layer on the lithium or other reactive metal surface. Such a chemically produced surface layer can protect lithium metal from reacting with oxygen, nitrogen or moisture in ambient atmosphere thereby allowing the lithium material to be handled outside of a controlled atmosphere, such as a dry room. Production processes involving lithium are thereby very considerably simplified. One example of such a process in the processing of lithium to form negative electrodes for lithium metal batteries.Type: GrantFiled: December 20, 2002Date of Patent: June 28, 2005Assignee: PolyPlus Battery CompanyInventors: Lutgard De Jonghe, Steven J. Visco, Yevgeniy S. Nimon, A. Mary Sukeshini
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Patent number: 6886240Abstract: An apparatus for producing a thin film electrolyte is provided wherein a volatile lithium-containing precursor and a volatile phosphate-containing precursor are mixed into a plasma generated from a plasma source. The mixture is then deposited upon a substrate. The apparatus has a plasma source (13) having a primary plenum (16) and a secondary plenum (23). The primary plenum is in fluid communication with a source of nitrogen gas (47) and a source of hydrogen gas (51). The secondary plenum is in fluid communication with a first bubbler (31) and a second bubbler (38).Type: GrantFiled: July 11, 2003Date of Patent: May 3, 2005Assignee: Excellatron Solid State, LLCInventors: Ji-Guang Zhang, Lamartine Meda, Eleston Maxie
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Patent number: 6878492Abstract: The present invention provides a solid polymer electrolyte; a polymerizable composition having low viscosity and excellent processability for obtaining the solid polymer electrolyte; and a polymerizable compound having low viscosity, and good polymerizability and stability for use in the polymerizable composition. The present invention also provides primary and secondary batteries capable of working with high capacity and current; an electric double-layer capacitor ensuring high output voltage, large takeout current, and good processability; and an electrochromic device favored with high response speed. Each thereof use the solid polymer electrolyte of the present invention and are ensured with long life, excellent safety free of liquid leakage, high reliability and production at a low cost.Type: GrantFiled: July 10, 2001Date of Patent: April 12, 2005Assignee: Showa Denko Kabushiki KaishaInventors: Masataka Takeuchi, Shuichi Naijo, Ayako Nishioka
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Patent number: 6866965Abstract: A polymeric electrolyte and a lithium battery lithium employing the same. The polymeric electrolyte includes a cross-linked polyether urethane prepared by reacting a pre-polymer having a polyethylene oxide backbone and terminated with NCO, with a cross-linking agent, organic solvent and lithium salt. Since the polymeric electrolyte is electrochemically stable, a lithium battery having improved reliability and safety can be obtained by employing the polymeric electrolyte.Type: GrantFiled: September 25, 2001Date of Patent: March 15, 2005Assignee: Samsung SDI Co., Ltd.Inventor: Jin-young Lee
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Patent number: 6864017Abstract: The invention relates to a method of preparing lithium complex salts and their intermediaries and to the use of these in electrolytes.Type: GrantFiled: October 31, 2003Date of Patent: March 8, 2005Assignee: Merck Patent GmbHInventors: Andrei Leonov, Armin de Meijere, Michael Schmidt
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Patent number: 6858346Abstract: An organic salt having an alkali metal bound to a disubstituted amide of alkane iminosulfinic acid has the following general formula: where Ar is an aromatic group, M is an alkali metal such as Li, K or Na, and CxHy is an alkane. The organic salt can be used to form non-aqueous liquid and gel or plasticized polymer electrolytes. The electrolytes can be used to form improved lithium and lithium ion batteries.Type: GrantFiled: April 15, 2002Date of Patent: February 22, 2005Assignee: ENER1 Battery CompanyInventors: Elena Shembel, Ivan V. Koval, Tat'yna G. Oliynik, Oleg V. Chervakov, Peter Novak
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Patent number: 6852139Abstract: A process of producing a thin film electrolyte is provided wherein a volatile lithium-containing precursor and a volatile phosphate-containing precursor are mixed into a plasma generated from a plasma source. The mixture is then deposited upon a substrate. The process is conducted with the use of a system (11) having a plasma source (13) having a primary plenum (16) and a secondary plenum (23). The primary plenum is in fluid communication with a source of nitrogen gas (47) and a source of hydrogen gas (51). The secondary plenum is in fluid communication with a first bubbler (31) and a second bubbler (38).Type: GrantFiled: July 11, 2003Date of Patent: February 8, 2005Assignee: Excellatron Solid State, LLCInventors: Ji-Guang Zhang, Lamartine Meda, Eleston Maxie
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Patent number: 6846594Abstract: Disclosed is a lithium secondary battery comprising a positive electrode including a material that is capable of reversible intercalation/deintercalation of lithium ions as a positive active material; a negative electrode including a material that is capable of reversible intercalation/deintercalation of lithium ions as a negative active material; and an electrolyte including a lithium salt, a carbonate-based organic solvent, and an isoxazole compound of the following formula (1):Type: GrantFiled: May 15, 2003Date of Patent: January 25, 2005Assignees: Samsung SDI Co., Ltd., Cheil Industries Inc.Inventors: Jin Sung Kim, Jun Won Kang, Hak Soo Kim, Jong Seob Kim
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Patent number: 6833220Abstract: The invention provides an electrolyte for secondary battery having a high ionic conductivity and an excellent safety and a secondary battery having an excellent cycle life performance comprising such an electrolyte.Type: GrantFiled: May 24, 2002Date of Patent: December 21, 2004Assignee: NOF CorporationInventors: Shoichi Yokoyama, Masataka Wakihara, Takao Kobayashi, Kentaro Suwa
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Publication number: 20040248009Abstract: Voltage delay in an active metal anode/liquid cathode battery cell can be significantly reduced or completely alleviated by coating the active metal anode (e.g., Li) surface with a thin layer of an inorganic compound with Li-ion conductivity using chemical treatment of Li surface. Particularly, preferred examples of such compounds include lithium phosphate, lithium metaphosphate, and/or their mixtures or solid solutions with lithium sulphate. These compounds can be formed on the Li surface by treatment with diluted solutions of the following individual acids: H3PO4, HPO3 and H2SO4, their acidic salts, or their binary or ternary mixtures in a dry organic solvent compatible with Li, for instance in 1,2-DME; by various deposition techniques. Such chemical protection of the Li or other active metal electrode significantly reduces the voltage delay due to protected anode's improved stability toward the electrolyte.Type: ApplicationFiled: June 4, 2003Publication date: December 9, 2004Applicant: PolyPlus Battery CompanyInventors: Lutgard De Jonghe, Yevgeniy S. Nimon, Steven J. Visco
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Publication number: 20040234865Abstract: A nonaqueous electrolyte secondary battery is made up of a positive electrode and a negative electrode which are composed of a lithium ion-occluding and releasing material and a binder polymer, at least one separator for separating the positive and negative electrodes, and a nonaqueous electrolyte which is composed of a lithium salt and an organic solvent. The electrolyte includes also a substance which is oxidized at the positive electrode at a cell voltage of from 4.1 V to 5.2 V, and which provokes an oxidation reaction that differs from the lithium-releasing reaction. The presence of this substance improves the overcharge characteristics and safety of the nonaqueous electrolyte secondary battery.Type: ApplicationFiled: March 25, 2004Publication date: November 25, 2004Inventors: Takaya Sato, Kimiyo Banno, Tatsuya Maruo, Ryutaro Nozu, Kentaro Takagi
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Patent number: 6818356Abstract: A solid amorphous electrolyte composition for a thin-film battery. The electrolyte composition includes a lithium phosphorus oxynitride material containing a sulfide ion dopant wherein the atomic ratio of sulfide ion to phosphorus ion (S/P) in the electrolyte ranges greater than 0 up to about 0.2. The composition is represented by the formula: LiwPOxNySz, where 2x+3y+2z=5+w, x ranges from about 3.2 to about 3.8, y ranges from about 0.13 to about 0.46, z ranges from greater than zero up to about 0.2, and w ranges from about 2.9 to about 3.3. Thin-film batteries containing the sulfide doped lithium oxynitride electrolyte are capable of delivering more power and energy than thin-film batteries containing electrolytes without sulfide doping.Type: GrantFiled: July 9, 2002Date of Patent: November 16, 2004Assignee: Oak Ridge Micro-Energy, Inc.Inventor: John B Bates
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Publication number: 20040219434Abstract: An apparatus for use as a fracture absorption layer, an apparatus for use as a electrochemical device, and methods of manufacturing the same are taught. The apparatuses and methods of the present invention may be of particular use in the manufacture of thin-film, lightweight, flexible or conformable, electrochemical devices such as batteries, and arrays of such devices. The present invention may provide many advantages including stunting fractures in a first electrochemical layer from propagating in a second electrochemical layer.Type: ApplicationFiled: May 6, 2004Publication date: November 4, 2004Inventors: Martin H. Benson, Bernd J. Neudecker
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Patent number: 6811929Abstract: A lithium battery having a cathode, an anode, and a separator interposed between the cathode and the anode, wherein the separator is an insulating resin sheet having a network structure in which a polymeric gel electrolyte is contained. The polymer electrolyte is prepared by polymerizing a polymer electrolyte precursor having a polymer represented by formula 1, a crosslinking agent represented by formula 2, and an electrolyte solution composed of a lithium salt and a non-aqueous organic solvents. Formula 1 is as follows: Formula 2 is as follows: In formula 1 and formula 2, x ranges from 0.1 to 0.6 mol, y ranges from 0.1 to 0.8 mol, z ranges from 0.1 to 0.8 mol, R is an alkyl having 1 to 6 carbon atoms, n is an integer from 3 to 30, and R′ is hydrogen or CH3.Type: GrantFiled: December 5, 2001Date of Patent: November 2, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Ilyeong-gon Noh, Ki-ho Kim
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Patent number: 6805999Abstract: A reverse configuration, lithium thin film battery (300) having a buried lithium anode layer (305) and process for making the same. The present invention is formed from a precursor composite structure (200) made by depositing electrolyte layer (204) onto substrate (201), followed by sequential depositions of cathode layer (203) and current collector (202) on the electrolyte layer. The precursor is subjected to an activation step, wherein a buried lithium anode layer (305) is formed via electroplating a lithium anode layer at the interface of substrate (201) and electrolyte film (204). The electroplating is accomplished by applying a current between anode current collector (201) and cathode current collector (202).Type: GrantFiled: March 17, 2003Date of Patent: October 19, 2004Assignee: Midwest Research InstituteInventors: Se-Hee Lee, C. Edwin Tracy, Ping Liu
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Publication number: 20040185310Abstract: A combined battery and device apparatus and associated method. This apparatus includes a first conductive layer, a battery comprising a cathode layer; an anode layer, and an electrolyte layer located between and electrically isolating the anode layer from the cathode layer, wherein the anode or the cathode or both include an intercalation material, the battery disposed such that either the cathode layer or the anode layer is in electrical contact with the first conductive layer, and an electrical circuit adjacent face-to-face to and electrically connected to the battery. Some embodiments further include a photovoltaic cell and/or thin-film capacitor. In some embodiments, the substrate includes a polymer having a melting point substantially below 700 degrees centigrade. In some embodiments, the substrate includes a glass. For example, some embodiments include a battery deposited directly on the back of a liquid-crystal display (LCD) device.Type: ApplicationFiled: March 22, 2004Publication date: September 23, 2004Applicant: Cymbet CorporationInventors: Mark Lynn Jenson, Jody Jon Klaassen
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Patent number: 6794083Abstract: The present invention relates to mixtures of fluoroalkylphosphate salts and polymers, methods of producing same, and their use in electrolytes, batteries, capacitors, supercapacitors and galvanic cells.Type: GrantFiled: November 9, 2001Date of Patent: September 21, 2004Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Michael Schmidt, Frank Ott, Michael Jungnitz, Nikolai Ignatyev, Andreas Kuehner
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Patent number: 6787267Abstract: The invention relates to an electrolyte for an electrochemical device. This electrolyte includes a first compound that is an ionic metal complex represented by the general formula (1); and at least one compound selected from special second to fourth compounds, fifth to ninth compounds respectively represented by the general formulas Aa+(PF6−)a, Aa+(ClO4−)a, Aa+(BF4−)a, Aa+(AsF6−)a, and Aa+(SbF6−)a, and special tenth to twelfth compounds, The electrolyte is superior in cycle characteristics and shelf life as compared with conventional electrolytes.Type: GrantFiled: November 28, 2001Date of Patent: September 7, 2004Assignee: Central Glass Company, LimitedInventors: Shoichi Tsujioka, Hironari Takase, Mikihiro Takahashi, Hiromi Sugimoto, Makoto Koide
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Patent number: 6783896Abstract: The invention relates to an electrolyte for an electrochemical device. This electrolyte includes a first compound that is an ionic metal complex represented by the general formula (1). The electrolyte may further include at least one compound selected from second to sixth compounds respectively represented by the general formulas Aa+(PF6−)a, Aa+(ClO4−)a, Aa+(BF4−)a, Aa+(AsF6−)a, and Aa+(SbF6−)a, and special seventh to twelfth compounds. The electrolyte can be superior in heat resistance, hydrolysis resistance, cycle characteristics and shelf life as compared with conventional electrolytes.Type: GrantFiled: October 3, 2001Date of Patent: August 31, 2004Assignee: Central Glass Company, LimitedInventors: Shoichi Tsujioka, Hironari Takase, Mikihiro Takahashi, Hiromi Sugimoto, Makoto Koide
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Publication number: 20040151986Abstract: A solid electrolyte including a composition represented by Formula 1 below is provided: aLi2O-bB2O3-cM-dX (1) wherein M is at least one selected from the group consisting of TiO2, V2O5, WO3, and Ta2O5; X is at least one selected from LiCl and Li2SO4; 0.4<a<0.55; 0.4<b<0.55; 0.02<c<0.05; a+b+c=1, and 0≦d<0.2. A method for preparing the solid electrolyte and a battery using the solid electrolyte are also provided. The solid electrolyte exhibits high ionic conductivity. Lithium and thin film batteries using the solid electrolyte are improved in charge/discharge rate, power output, and cycle life.Type: ApplicationFiled: January 15, 2004Publication date: August 5, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Young-Sin Park, Jong-Heun Lee, Young-Gu Jin, Seok-Soo Lee
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Patent number: 6767671Abstract: A non-aqueous electrolytic solution capable of depressing deterioration of battery properties in a high temperature environment is provided. A secondary battery is also provided. The non-aqueous electrolytic solution containing at least an organic solvent and a lithium salt further contains a particular pyridine compound.Type: GrantFiled: July 13, 2001Date of Patent: July 27, 2004Assignee: Mitsubishi Chemical CorporationInventors: Hiroaki Itagaki, Chikara Kiyohara
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Patent number: 6767669Abstract: A negative electrode for a lithium rechargeable battery includes a carbon material in which lithium intercalation occurs, and at least one metallic oxide selected from yttrium oxide, cerium oxide, and titanium oxide.Type: GrantFiled: August 8, 2001Date of Patent: July 27, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Keiko Matsubara, Toshiaki Tsuno, Sang-Young Yoon
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Publication number: 20040142244Abstract: Disclosed are ionically conductive composites for protection of active metal anodes and methods for their fabrication. The composites may be incorporated in active metal negative electrode (anode) structures and battery cells. In accordance with the invention, the properties of different ionic conductors are combined in a composite material that has the desired properties of high overall ionic conductivity and chemical stability towards the anode, the cathode and ambient conditions encountered in battery manufacturing. The composite is capable of protecting an active metal anode from deleterious reaction with other battery components or ambient conditions while providing a high level of ionic conductivity to facilitate manufacture and/or enhance performance of a battery cell in which the composite is incorporated.Type: ApplicationFiled: December 5, 2003Publication date: July 22, 2004Applicant: PolyPlus Battery CompanyInventors: Steven J. Visco, Yevgeniy S. Nimon, Bruce D. Katz
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Patent number: 6746791Abstract: An ionic conducting device comprising a nanostructured material layer. The nanostructured layer has a microstructure confined to a size less than 100 nm. The ion conductivity of the nanostructured layer is higher than the ion conductivity of a layer of equivalent composition and size having a micron-sized microstructure. Nano-ionic compositions taught include ceramics, polymers, lithium containing compounds, sodium containing compounds, ion defect structures, silver containing compounds, Applications of nano-ionics to fuel cells, sensors, batteries, electrochemical devices, electrocatalysts are taught.Type: GrantFiled: May 21, 2002Date of Patent: June 8, 2004Assignee: NanoProducts CorporationInventors: Tapesh Yadav, Hongxing Hu
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Publication number: 20040106046Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode and a thin film solid electrolyte including lithium ion conductive inorganic substance. The thin film solid electrolyte has thickness of 20 &mgr;m or below and is formed directly on an electrode material or materials for the positive electrode and/or the negative electrode. The thin film solid electrolyte has lithium ion conductivity of 10−5 Scm−1 or over and contains lithium ion conductive inorganic substance powder in an amount of 40 weight % or over in a polymer medium. The average particle diameter of the inorganic substance powder is 0.5 &mgr;m or below. According to a method for manufacturing the lithium ion secondary battery, the thin film solid electrolyte is formed by coating the lithium ion conductive inorganic substance directly on the electrode material or materials for the positive electrode and/or the negative electrode.Type: ApplicationFiled: November 18, 2003Publication date: June 3, 2004Inventor: Yasushi Inda
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Publication number: 20040101761Abstract: A solid electrolyte, a method of manufacturing the same, and a lithium battery and a thin-film battery that employ the solid electrolyte are provided. The solid electrolyte contains nitrogen to enhance the ionic conductivity and electrochemical stability of batteries.Type: ApplicationFiled: September 8, 2003Publication date: May 27, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Young-Sin Park, Seok-Soo Lee, Young-Gu Jin
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Publication number: 20040096745Abstract: A lithium ion conductor is prepared from a composite oxide containing Li, Ta and N and/or a composite oxide containing Li, Ta, Nb and N.Type: ApplicationFiled: November 7, 2003Publication date: May 20, 2004Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Yasuyuki Shibano, Kazuya Iwamoto
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Patent number: 6727024Abstract: The present invention relates to a polyalkylene oxide based polymer composition for solid polymer electrolytes having superior mechanical properties and ionic conductivity by comprising a cross-linking agent with at least two functional groups of phenyl alkyleneglycol acrylate substitited in core molecules; a softener of polyalkyleneglycol alkylether alkyl(metha)acrylate; a plasticizer of polyalkyleneglycol dialkylether; a initiator and lithium salt thus can be useful as an electrolyte for a high capacity lithium-polymer secondary battery for load leveling or electric vehicles as well as an electrolyte for a small capacity lithium-polymer secondary battery for portable information terminals such as a cellular phone and a notebook computer, and electronic products such as a camcorder.Type: GrantFiled: July 3, 2001Date of Patent: April 27, 2004Assignee: Institute of Chemical TechnologyInventors: Yongku Kang, Changjin Lee, Seok Koo Kim
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Patent number: 6727022Abstract: The present comprises an electrode having the configuration: first active material/current collector screen/second active material. When one of the active materials is in a powder form, it is possible for that material to move through openings in the current collector screen to “contaminate” the interface between the other active material and the current collector. The present invention consists of having the other electrode active materials in a form incapable of moving through the current collector to the other side thereof. Then, the assembly is pressed from the direction of the other electrode active material. This seals off the current collector as the pressing force moves the current collector against the powdered electrode active material.Type: GrantFiled: November 19, 2001Date of Patent: April 27, 2004Assignee: Wilson Greatbatch Ltd.Inventors: Hong Gan, Esther S. Takeuchi
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Publication number: 20040062968Abstract: An electrolytic perovskite and method for synthesizing the electrolytic perovskite are described herein. Basically, the electrolytic perovskite is a solid that has an ion conductivity greater than 10−5 S/cm in a temperature range of 0-400° C., wherein the ion is Li+, H+, Cu+, Ag+, Na+ or Mg2+. For example, Li1/8Na3/8La1/4Zr1/4Nb3/4O3 (5.26×10−4 S/cm) and Li1/8K1/2La1/8NbO3 (2.86×10−3 S/cm) are two electrolytic perovskites that have been synthesized in accordance with the present invention that have a high Li+ conductivity at 20° C. Both compositions have been confirmed in experiments to conduct Ag+ and H+ ions, as well. The present invention also includes a solid proton conductor that can be formed from the electrolytic perovskite by replacing the ions located therein with protons.Type: ApplicationFiled: September 24, 2002Publication date: April 1, 2004Applicant: Corning IncorporatedInventor: Cameron W. Tanner
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Patent number: 6709789Abstract: Nonaqueous electrochemical cell (9) with a negative electrode (4), an electrolytic solution and a positive electrode (3). The operational safety is increased by the fact that the cell contains a salt (10) in solid state in the area of at least one of the two electrodes (3,4).Type: GrantFiled: August 6, 2001Date of Patent: March 23, 2004Inventors: Günther Hambitzer, Bernd Kreidler, Ulrike Dörflinger, Volker Döge, Klaus Schorb
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Patent number: 6699619Abstract: A lithium-secondary-battery negative electrode having a protective layer to prevent the surface deterioration of the inorganic solid electrolytic layer. The negative electrode comprises metallic lithium or a lithium-containing metal, a first inorganic solid electrolytic layer (thickness: a) formed on the metal, and a second inorganic solid electrolytic layer (thickness: b) formed on the first inorganic solid electrolytic layer. The thickness ratio b/a is specified to be more than 0.5.Type: GrantFiled: April 20, 2001Date of Patent: March 2, 2004Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hirokazu Kugai, Nobuhiro Ota, Shosaku Yamanaka
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Patent number: 6699622Abstract: Disclosed is an electrolyte capable of obtaining an excellent quality of electrolyte, and a battery using the electrolyte. A battery device in which a positive electrode and a negative electrode are stacked with a separator being interposed therebetween is enclosed inside an exterior member. The separator is impregnated with an electrolyte. The electrolyte contains a high polymer, a plasticizer, a lithium and at least either carboxylic acid or carboxylate. Therefore, when preparing a high polymer by means of polymerization of monomers, the polymerization of monomers can be smoothly processed even if there is a factor for inhibiting reaction such as copper. As a result, the amount of non-reacted monomers remained in the electrolyte can be suppressed to be extremely small. Therefore, decomposition and reaction of monomers are suppressed even after repeating charging/discharging, so that the deterioration in the charging/discharging efficiency and the charging/discharging characteristic can be prevented.Type: GrantFiled: May 22, 2001Date of Patent: March 2, 2004Assignee: Sony CorporationInventors: Koichiro Kezuka, Takahiro Endo
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Patent number: 6686096Abstract: There is disclosed a solid state rechargeable electric battery (10) including a number of cathode plates (7) interposed among a number of anode plates (8) in which the cathode plate (7) includes an aluminium foil (41) coated with a layer of mixture (43) of lithium manganate, chromium and fluoride. The anode plate (8) includes a copper foil (47) coated with a layer of mixture (49) containing petroleum coke. Provided among the cathode plates (7) and anode plates (8) is a solid state electrolyte (14) made up of lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate.Type: GrantFiled: August 4, 2000Date of Patent: February 3, 2004Assignee: New Billion Investments LimitedInventor: Hing Ka Chung
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Patent number: 6682823Abstract: It is the object of the present invention to provide a curable composition capable of giving a polymer electrolyte showing a high level of ionic conductivity and excellent mechanical strength as well. The invention provides a curable composition for polymer electrolyte which comprises the following constituents (A) to (D) as essential constituents: (A) a polysiloxane having a polyethylene oxide structure-containing group and/or a cyclic carbonate structure-containing group as a substituent on a silicon atom and having two or more SiH groups; (B) a compound having at least one structure selected from the group consisting of a phenylene unit, a siloxy linkage, an Si—N bond, a carbonyl group, an amide linkage and an amino group and having two or more alkenyl groups; (C) a hydrosilylation catalyst; and (D) an electrolyte salt compound.Type: GrantFiled: May 11, 2001Date of Patent: January 27, 2004Assignee: Kaneka CorporationInventor: Kenji Okada
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Patent number: 6680149Abstract: The present invention relates to a solid polymer electrolyte of polyether poly(N-substituted urethane) comprising an electrolytic compound and a polymer matrix, wherein the polymer matrix is a copolymer comprising polyether unit and polyurethane unit and has 50,000-2,000,000 of a weight average molecular weight, where N-positions of the polyurethane unit are substituted with oligo(ethylene oxide) derivatives which provide flexibility and electrolytic conduction of the polymer matrix by controlling its length, composition, structure and crosslinked degree. Accordingly, the solid polymer electrolyte of the present invention provides excellent thermal stability, electrochemical stability and mechanical properties and thus, is suitable for use in polymer secondary batteries and electrochemical devices.Type: GrantFiled: October 1, 2001Date of Patent: January 20, 2004Assignee: Hanyang Hak Won Co., Ltd.Inventors: Si-Tae Noh, Jung-Ohk Kweon, Hee Sung Choi
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Publication number: 20040005504Abstract: A sulfide-based inorganic solid electrolyte that suppresses the reaction between silicon sulfide and metallic lithium even when the electrolyte is in contact with metallic lithium, a method of forming the electrolyte, and a lithium battery's member and lithium secondary battery both incorporating the electrolyte. The electrolyte comprises Li, P, and S without containing Si. It is desirable that the oxygen content vary gradually from the electrolyte to the lithium-containing material at the boundary zone between the two members when analyzed by using an XPS having an analyzing chamber capable of maintaining a super-high vacuum less than 1.33×10−9 h Pa and that the oxygen-containing layer on the surface of the lithium-containing material be removed nearly completely. The electrolyte can be formed such that at least part of the forming step is performed concurrently with the step for etching the surface of the substrate by irradiating the surface with inert-gas ions.Type: ApplicationFiled: March 19, 2003Publication date: January 8, 2004Inventors: Hirokazu Kugai, Nobuhiro Ota
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Patent number: 6673495Abstract: Provided are a polymeric electrolyte or a nonaqueous electrolyte that can improve a transport rate of charge carrier ions by adding a compound having boron atoms in the structure, preferably one or more selected from the group consisting of compounds represented by the following general formulas (1) to (4), and an electric device such as a cell or the like using the same. wherein R11, R12, R13, R14, R15, R16, R21, R22, R23, R24, R25, R26, R27, R28, R31, R32, R33, R34, R35, R36, R37, R38, R39, R310, R41, R42, R43, R44, R45, R46, R47, R48, R49, R410, R411 and R412 each represent a hydrogen atom, a halogen atom or a monovalent group, or represent groups bound to each other to form a ring, and Ra, Rb, Rc and Rd each represent a group having a site capable of being bound to boron atoms which are the same or different.Type: GrantFiled: April 25, 2001Date of Patent: January 6, 2004Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Masahito Nishiura, Michiyuki Kono, Masayoshi Watanabe
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Patent number: 6664006Abstract: All-solid-state electrochemical cells and batteries employing very thin film, highly conductive polymeric electrolyte and very thin electrode structures are disclosed, along with economical and high-speed methods of manufacturing. A preferred embodiment is a rechargeable lithium polymer electrolyte battery. New polymeric electrolytes employed in the devices are strong yet flexible, dry and non-tacky. The new, thinner electrode structures have strength and flexibility characteristics very much like thin film capacitor dielectric material that can be tightly wound in the making of a capacitor. A wide range of polymers, or polymer blends, characterized by high ionic conductivity at room temperature, and below, are used as the polymer base material for making the solid polymer electrolytes. The preferred polymeric electrolyte is a cationic conductor. In addition to the polymer base material, the polymer electrolyte compositions exhibit a conductivity greater than 1×10−4 S/cm at 25° C.Type: GrantFiled: September 2, 1999Date of Patent: December 16, 2003Assignee: Lithium Power Technologies, Inc.Inventor: M. Zafar A. Munshi
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Patent number: 6656638Abstract: A non-aqueous electrolyte battery including a positive electrode containing a complex oxide of a transition metal, a negative electrode arranged facing the positive electrode and containing metal lithium, lithium alloy, or a carbon material capable of doping and undoping lithium, and a non-aqueous electrolyte interposed between the positive electrode and the negative electrode. The complex oxide of a transition metal is a complex oxide of lithium and manganese represented by the general formula LiMn1−yByO2, with 0<y<1.Type: GrantFiled: February 16, 2000Date of Patent: December 2, 2003Assignee: Sony CorporationInventor: Kiyoshi Yamaura
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Patent number: 6656634Abstract: A non-aqueous electrolytic cell having a positive electrode, which has a positive electrode active material layer containing, at least a positive electrode active material; a negative electrode, which has a negative electrode active material layer containing, at least, a negative electrode active material; and an electrolyte, wherein a sulfur compound is added to at least one of the positive electrode active material and/or the negative electrode active material.Type: GrantFiled: December 27, 2000Date of Patent: December 2, 2003Assignee: Sony CorporationInventor: Yosuke Hosoya
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Patent number: 6649307Abstract: The present invention provides a non-aqueous electrolyte secondary cell including: a cathode containing a manganese oxide or a lithium-manganese composite oxide; an anode containing a lithium metal, a lithium alloy, or a material capable of doping/dedoping lithium; and an electrolyte containing at least two electrolyte salts, one of which is LiBF4 contained in the range from 0.005 mol/l to 0.3 mol/l. This enables to increase the cycle characteristic, preventing deterioration of the cell characteristic caused by a repeated use.Type: GrantFiled: July 10, 2001Date of Patent: November 18, 2003Assignee: Sony CorporationInventors: Hideki Terashima, Yuzuru Fukushima, Kimio Takahashi, Hiroko Ohnuma, Kotaro Satori, Akinori Kita
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Patent number: 6645670Abstract: The present invention improves the performance of lithium electrochemical cells by providing a new electrode assembly based on a sandwich cathode design, but termed a double screen sandwich cathode electrode design. In particular, the present invention uses sandwich cathode electrodes which are, in turn, sandwiched between two half double screen sandwich cathode electrodes, either in a prismatic plate or serpentine-like electrode assembly. In a jellyroll electrode assembly, the cell is provided in a case-positive design and the outside round of the electrode assembly is a half double screen sandwich cathode electrode.Type: GrantFiled: April 30, 2001Date of Patent: November 11, 2003Assignee: Wilson Greatbatch Ltd.Inventor: Hong Gan
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Patent number: 6645674Abstract: The present invention provides a lithium secondary battery comprising a cathode electrode containing a lithium complex oxide; an anode electrode containing metal lithium or its alloy, or carbon material; and a nonaqueous organic electrolyte containing a nonaqueous organic solvent, a lithium salt and an aromatic ether that can react to form dimers or polymers above a certain temperature and voltage and that can be expressed by Formula 1 below: wherein, R1 is independently a single bond or an alkylene group with less than or equal to 2 carbons and R2 is hydrogen or an alkyl group with less than or equal to 2 carbons. The lithium secondary battery has the advantage that its characteristics are maintained, even if it is left in its fully charged state at a high temperature for a long time and, at the same time, its reliability and stability have been improved.Type: GrantFiled: January 18, 2001Date of Patent: November 11, 2003Assignees: Samsung SDI Co., Ltd., Cheil Industries Inc.Inventors: Jeong-soon Shin, Jin-sung Kim, Eui-sun Hong, Jong-wook Lee, Young-gyu Kim, Jong-seob Kim
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Patent number: 6645675Abstract: A wide range of solid polymer electrolytes characterized by high ionic conductivity at room temperature, and below, are disclosed. These all-solid-state polymer electrolytes are suitable for use in electrochemical cells and batteries. A preferred polymer electrolyte is a cationic conductor which is flexible, dry, non-tacky, and lends itself to economical manufacture in very thin film form. Solid polymer electrolyte compositions which exhibit a conductivity of at least approximately 10−3-10−4 S/cm at 25° C. comprise a base polymer or polymer blend containing an electrically conductive polymer, a metal salt, a finely divided inorganic filler material, and a finely divided ion conductor.Type: GrantFiled: September 2, 1999Date of Patent: November 11, 2003Assignee: Lithium Power Technologies, Inc.Inventor: M. Zafar A. Munshi