Chemically Specified Organic Solute Patents (Class 429/307)
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Publication number: 20040081891Abstract: The present invention concerns a non-aqueous electrolyte secondary battery includes a cathode (2) capable of being electrochemically doped with and dedoped from lithium; an anode (3)capable of being electrochemically doped with and dedoped from lithium; and an immobilized non-aqueous electrolyte or a gel electrolyte (4) interposed between the cathode (2) and the anode (3) and obtained by mixing a low viscosity compound with or dissolving a low viscosity compound in a polymer compound. At least one kind of unsaturated carbonate or a cyclic ester compound is added to the low viscosity compound, so that storage characteristics and cyclic characteristics are improved.Type: ApplicationFiled: August 27, 2003Publication date: April 29, 2004Inventors: Akira Yamaguchi, Hideaki Ojima, Ken Segawa, Yuzuru Fukushima
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Patent number: 6727023Abstract: An electrolyte composition comprising a polymer compound formed by polymerizing an ionic liquid crystal monomer containing at least one polymerizable group. Also disclosed are an electrochemical cell, a nonaqueous secondary cell and a photoelectrochemical cell, each comprising the electrolyte composition.Type: GrantFiled: January 16, 2001Date of Patent: April 27, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Michio Ono
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Publication number: 20040076886Abstract: Polymer solid electrolytes with good film strength, high ionic conductivity and excellent processability are provided, comprising a resin composition for polymer solid electrolytes containing 0.5-5.0% by weight of a curable resin having a specific structure (A), a plasticizer and (B) an electrolyte (C).Type: ApplicationFiled: July 18, 2003Publication date: April 22, 2004Inventors: Satoshi Mori, Minoru Yokoshima
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Publication number: 20040053138Abstract: The invention relates to the use of cyano-substituted thiophenes as electrolyte additives for protecting nonaqueous, rechargeable lithium batteries from overcharging, and lithium batteries comprising these additives.Type: ApplicationFiled: September 12, 2003Publication date: March 18, 2004Inventors: Ralph Otterstedt, Stephan Kirchmeyer, Lutz Brassat
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Publication number: 20040048159Abstract: A lithium polymer secondary battery which comprises a negative electrode, a positive electrode, and polymer electrolyte layers united respectively with the two electrodes and differing in viscoelastic behavior. In this battery, conformation to the expansion and shrinkage accompanying charge/discharge is easy and the interfacial resistance between each electrode and the polymer electrolyte is kept low.Type: ApplicationFiled: September 3, 2003Publication date: March 11, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
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Publication number: 20040043295Abstract: Rechargeable composite polymer batteries are disclosed employing composite polymer electrolytes comprising an inorganic oxide, exemplified by fumsilic(SiO2), and an organic polymer, exemplified by poly(vinylidene fluoride)-hexafluoropropene copolymer (PVDF-HFP), gelled with Li-ion battery electrolytes. The composite polymer electrolytes are prepared by forming a suspension of the inorganic oxide in a solution of the organic polymer contained in a suitable carrier solvent, spraying the suspension onto the surfaces of Li-ion battery electrodes to form inorganic oxide-organic polymer composite films that adhere to the electrode surfaces, and gelling the films with Li-ion battery electrolytes in-situ to form composite inorganic oxide-organic polymer gel electrolytes. Li-ion battery cells are then constructed with the resulting electrode-polymer electrolytes.Type: ApplicationFiled: August 21, 2003Publication date: March 4, 2004Inventors: Rafael Rodriguez, Kuzhikalail M. Abraham, Joseph DiCarlo
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Publication number: 20040038105Abstract: The invention relates to a cation- and/or proton-conducting membrane, to a process for producing it, and to its use.Type: ApplicationFiled: June 13, 2003Publication date: February 26, 2004Inventors: Volker Hennige, Christian Hying, Gerhard Horpel
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Publication number: 20040034253Abstract: Orthoborate salts suitable for use as electrolytes in lithium batteries and methods for making the electrolyte salts are provided. The electrolytic salts have one of the formulae (I). In this formula anionic orthoborate groups are capped with two bidentate chelating groups, Y1 and Y2. Certain preferred chelating groups are dibasic acid residues, most preferably oxalyl, malonyl and succinyl, disulfonic acid residues, sulfoacetic acid residues and halo-substituted alkylenes. The salts are soluble in non-aqueous solvents and polymeric gels and are useful components of lithium batteries in electrochemical devices.Type: ApplicationFiled: September 3, 2003Publication date: February 19, 2004Inventors: Charles A. Angell, Wu Xu
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Publication number: 20040029016Abstract: Disclosed is a polymer electrolyte for a lithium sulfur battery. The electrolyte includes a monomer with a methacrylate group, an initiator, an organic solvent, and a lithium salt.Type: ApplicationFiled: August 6, 2003Publication date: February 12, 2004Inventors: Duck-Chul Hwang, Kyoung-Hee Lee
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Patent number: 6689513Abstract: A lithium secondary battery is disclosed. The battery comprises a positive electrode, a negative electrode, an electrolyte solution comprising an electrolyte, a separator, and a ligand. The ligand is oriented at the interface of the electrolyte solution and the positive electrode and at the interface of the electrolyte solution and the negative electrode. The ligand has a cyclic structure having a pore that has a diameter of about 1.7 angstroms or more and coordinates lithium ions more strongly than either the solvent or the electrolyte. Typical ligands are coronands (crown ethers), podanocoronands (lariat ethers), cryptands, and spherands. The battery maintains high reliability and energy density, even after storage at high temperature.Type: GrantFiled: March 5, 2001Date of Patent: February 10, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenichi Morigaki, Masaya Okochi, Shinji Mino
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Publication number: 20040023121Abstract: Ion-conducting (co)polymer media and ion-conducting oligomer media close in ion conductivity to organic-solvent-based electrolytes can be produced easily and safely on industrial scale. These ion-conducting (co)polymer media use (co)polymers containing at least one cyclocarbonato group, and these ion-conducting oligomer media employ oligomers containing at least two cyclocarbonato groups.Type: ApplicationFiled: July 23, 2003Publication date: February 5, 2004Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Michiei Nakamura, Sachio Yoshikawa, Minoru Takizawa, Toshiyasu Fujita, Seiji Doi, Nobuhiro Kihara
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Publication number: 20040023114Abstract: A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60° C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.Type: ApplicationFiled: August 20, 2003Publication date: February 5, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
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Publication number: 20040013944Abstract: A lithium secondary battery of the present invention comprises a positive electrode; a negative electrode; a separator interposed between the positive and negative electrodes; and an electrolyte on the separator, wherein the electrolyte includes a non-aqueous organic solvent, a lithium salt, and a linear polymer having P═O bonds. The electrolyte improves the swelling characteristics of lithium secondary batteries. A lithium secondary battery with the electrolyte and a method for preparing the electrolyte and battery is described.Type: ApplicationFiled: July 14, 2003Publication date: January 22, 2004Inventors: Jin-Young Lee, Kyoung-Hee Lee
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Publication number: 20030228523Abstract: A solid polymer electrolyte produced using a layer-by layer (LBL) assembly process. The solid electrolyte is assembled on a substrate by alternating exposure to dilute solutions of polycation and polyanion or hydrogen-bonding donor and hydrogen-bonding acceptor. Ethylene oxide content is introduced into the LBL film by 1) covalent grafting onto a polyionic species, 2) inclusion of an ethylene oxide (e.g. PEO) polymer as one of the two component species of a LBL assembly, or 3) the addition of ethylene oxide-containing small molecule, oligomer, or polymer to a fully assembled LBL polymer matrix. The prepared films were to be ultrathin SPE films with sound mechanical properties and ion conductivity to meet the needs of current applications, such as batteries, fuels cells, sensors and electrochromic devices.Type: ApplicationFiled: April 7, 2003Publication date: December 11, 2003Inventors: Dean M. DeLongchamp, Paula T. Hammond, Hiroaki Tokuhisa
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Publication number: 20030211397Abstract: A microcomposite structure for use as a component of a lithium battery is formed from a liquid phase mixture by the removal of a solvent. The microcomposite structure includes a continuous reticulated solid polymer phase, a formed in situ gel-electrolyte phase, and a solid phase surfactant at the interface between the gel and polymer phases for stabilizing the gel phase within the pores of the solid polymer phase. The liquid phase mixture comprises a polymer blend, an aprotic solvent system for the polymer blend, a substantially dissolved anionic surfactant, and a phase separation liquid that is miscible with the aprotic solvent system, but in which the polymer blend is substantially insoluble. The microcomposite structure is formed by casting the liquid phase mixture on a surface and removing solvent until the microcomposite structure forms.Type: ApplicationFiled: February 10, 2003Publication date: November 13, 2003Inventors: Raffaele La Ferla, Larisa V Malinovskaya
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Publication number: 20030194612Abstract: An organic salt having an alkali metal bound to a disubstituted amide of alkane iminosulfinic acid has the following general formula: 1Type: ApplicationFiled: April 15, 2002Publication date: October 16, 2003Inventors: Elena Shembel, Ivan V. Koval, Tat?apos;yna G. Oliynik, Oleg V. Chervakov, Peter Novak
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Publication number: 20030190529Abstract: An electrolyte for a lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive comprising a) a compound represented by the following Formula (1), and b) a compound selected from the group consisting of a sulfone-based compound, a poly(ester)(metha)acrylate, a polymer of poly(ester)(metha)acrylate, and a mixture thereof: 1Type: ApplicationFiled: March 21, 2003Publication date: October 9, 2003Applicant: SAMSUNG SDI Co., Ltd.Inventors: Jun-Ho Kim, Ha-Young Lee, Sang-Hoon Choy, Ho-Sung Kim, Hyeong-Gon Noh
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Publication number: 20030180623Abstract: The present invention relates to a multi-layered, UV-cured polymer electrolyte and lithium secondary battery comprising the same, wherein the polymer electrolyte comprises: A) a separator layer formed of polymer electrolyte, PP, PE, PVdF or non-woven fabric, wherein a the separator layer having two surfaces; B) at least one gelled polymer electrolyte layer located on at least one surface of the separator layer comprising: a) polymer obtained by curing ethyleneglycoldi(meth)acrylate oligomer of the formula (I) by UV irradiation: CH2═CR1COO(CH2CH2O)nCOCR2═CH2 wherein, R1 and R2 are independently hydrogen or methyl group, and n is a integer of 3-20; and b) at least one polymer selected from the group consisting of PVdF-based polymer, PAN-based polymer, PMMA-based polymer and PVC-based polymer; and C) organic electrolyte solution in which lithium salt is dissolved in a solvent.Type: ApplicationFiled: May 22, 2003Publication date: September 25, 2003Inventors: Kyung-Suk Yun, Byung-Won Cho, Won-Il Cho, Hyung-Sun Kim, Un-Sek Kim, Hee-Woo Rhee, Yong-Tae Kim
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Publication number: 20030170546Abstract: A composition for use as a polymer electrolyte, wherein said composition comprises one or more polar materials and one or more polyesters (polymers of carbonic acid); a process for preparing said composition; the use of said composition as a polymer electrolyte in coulometers, displays, smart windows, cells or batteries; and a cell and/or battery comprising said composition.Type: ApplicationFiled: February 18, 2003Publication date: September 11, 2003Inventors: Wyndham Henry Boon, Thomas Clayton Forschner, David Eric Gwyn, James R. Maccallum, Christopher John Smith, Michael John Smith
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Publication number: 20030165745Abstract: To realize constituent elements for realizing a nonaqueous secondary battery having high energy density and high repeating stability, and a nonaqueous secondary battery using the same.Type: ApplicationFiled: March 19, 2003Publication date: September 4, 2003Inventors: Kazuhiro Watanabe, Katsuhiro Nichogi, Norishige Nanai, Akihito Miyamoto, Soji Tsuchiya
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Solvents and novel electrolytic compositions having a large range of stability and high conductivity
Publication number: 20030162096Abstract: The present invention is concerned with novel polar solvents and novel electrolytic compositions comprising such solvents, and having a high range of stability, as required for applications in the field of electrochemistry. The present solvents have a highly polar amide function, and preferably combine with a salt soluble in the solvent and having an anion with a delocalized charge, and at least one polymer, to form an electrolytic composition.Type: ApplicationFiled: December 12, 2002Publication date: August 28, 2003Applicant: ACEP Inc.Inventors: Christophe Michot, Dany Brouillette, Daniel Baril, Jean-Yves Bergeron, Michel Armand -
Publication number: 20030157411Abstract: A solid polymer electrolyte, a lithium battery employing the same, and methods of forming the electrolyte and the lithium battery. The polymer electrolyte includes polyester (meth)acrylate having a polyester polyol moiety having three or more hydroxide (—OH) groups, at least one hydroxde group being substituted by a (meth)acrylic ester group and at least one hydroxide group being substituted by a radical non-reactive group, or its polymer, a peroxide having 6 to 40 carbon atoms, and an electrolytic solution including a lithium salt and an organic solvent.Type: ApplicationFiled: November 5, 2002Publication date: August 21, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Cheol-soo Jung, Ki-ho Kim, Cul-hwen Bong, Doo-Kyung Yang, Kyoung-hee Lee, Yong-beom Lee, Hyun-Leong Lim, Takitaro Yamaguchi, Ryuichi Shimizu
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Publication number: 20030152837Abstract: A polymer electrolyte composition for improving overcharge safety and a lithium battery using the same are provided. The polymer electrolyte composition includes acrylate, epoxy or isocyanate at both of its terminals, and includes a compound containing an aromatic group such as thiophene, biphenyl or furan in an amount of 0.1% to 20% by weight based on the amount of the overall organic electrolytic solution. The polymer electrolyte composition further includes at least one of polyethylene glycol diacrylate (PEGDA), polyethylene glycol dimethacrylate (PEGDMA), and a mixture thereof. A lithium polymer battery using the polymer electrolyte composition can be suppressed from danger of ignition or explosion when the battery is overcharged due to some uncontrolled conditions, such as failure of a charger. Moreover, an additional cutoff device is not necessary, while still exhibiting good life cycle characteristics of the battery.Type: ApplicationFiled: October 23, 2002Publication date: August 14, 2003Inventor: Hyeong-Gon Noh
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Publication number: 20030148162Abstract: A “water free,” proton conducting membrane for use in a fuel cell is fabricated as a highly conducting sheet of converted solid state organic amine salt, such as converted acid salt of triethylenediamine with two quaternized tertiary nitrogen atoms, combined with a nanoparticulate oxide and a stable binder combined with the converted solid state organic amine salt to form a polymeric electrolyte membrane. In one embodiment the membrane is derived from triethylenediamine sulfate, hydrogen phosphate or trifiate, an oxoanion with at least one ionizable hydrogen, organic tertiary amine bisulfate, polymeric quaternized amine bisulfate or phosphate, or polymeric organic compounds with quaternizable nitrogen combined with Nafion to form an intimate network with ionic interactions.Type: ApplicationFiled: January 17, 2003Publication date: August 7, 2003Inventors: Sekharipuram R. Narayanan, Shiao-Pin S. Yen
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Publication number: 20030138702Abstract: A solid state ion conducting electrolyte and a battery incorporating same. The electrolyte includes a polymer matrix with an alkali metal salt dissolved therein, the salt having an anion with a long or branched chain having not less than 5 carbon or silicon atoms therein. The polymer is preferably a polyether and the salt anion is preferably an alkyl or silyl moiety of from 5 to about 150 carbon/silicon atoms.Type: ApplicationFiled: December 10, 2002Publication date: July 24, 2003Inventors: Rex E. Gerald, Jerome W. Rathke, Robert J. Klingler
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Publication number: 20030124431Abstract: Provided are a fluoride copolymer, a polymer electrolyte comprising the fluoride copolymer, and a lithium battery employing the polymer electrolyte. The polymer electrolyte preferably includes as the fluoride copolymer at least one fluoride polymer selected from a polyethylene glycol methylether (meth)acrylate (PEGM)A)-2,2,2-trifluoroethylacrylate (TFEA) polymer, a PEGMA-TFEA-acrylonitrile (AN) polymer, a PEGMA-TFEA-methyl methacrylate (MMA) polymer, a PEGMA-TFEA-vinylpyrrolidone (VP) polymer, a PEGMA-TFEA-trimethoxyvinylsilane (TMVS) polymer, and a PEGMA-TFEA-ethoxy ethylacrylate (EEA) polymer.Type: ApplicationFiled: September 11, 2002Publication date: July 3, 2003Inventors: Seung-Sik Hwang, Myung-Dong Cho
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Publication number: 20030113634Abstract: An organic electrolytic solution includes ethylenically unsaturated compounds which suppress swelling of a battery due to the gas produced when the battery is stored at high temperature or when charging/discharging cycles are repeatedly performed, and reduces internal resistance of the battery. Polymer electrolytes and lithium batteries are manufactured using the organic electrolytic solutions. The ethylenically unsaturated compounds are vinylene carbonates, vinyl sulfones, acrylonitriles or derivatives thereof.Type: ApplicationFiled: September 3, 2002Publication date: June 19, 2003Applicant: SAMSUNG SDI CO., LTD.Inventors: Won-Seog Oh, Sang-Won Lee, Kwang Sup Kim, Sang-Hoon Choy
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Publication number: 20030113605Abstract: A polymer electrolyte composition comprising a polymer electrolyte and at least one of antioxidant selected from a group which consists of a antioxidant containing tri-valent phosphorous and a sulfur-containing antioxidant is provided as a polymer electrolyte composition superior in radical resistance property.Type: ApplicationFiled: August 7, 2002Publication date: June 19, 2003Inventors: Yasuaki Hidaka, Katsuhiko Iwasaki
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Publication number: 20030108798Abstract: Disclosed are a lithium salt expressed by a formula, LiAlXn(OY)4-n, where “X” is an electrophilic substituent group and “Y” is an oligoether group, an ionic conductor with the lithium salt dispersed in a structural member, and a liquid electrolyte with the lithium salt dissolved in a solvent. For example, the ionic conductor exhibits high ionic conductivity as well as high lithium ion transport number.Type: ApplicationFiled: November 8, 2002Publication date: June 12, 2003Inventor: Tatsuo Fujinami
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Publication number: 20030108800Abstract: A non-aqueous electric current producing electrochemical cell is provided comprising an anode and a cathode, an ionically permeable separator interposed between the anode and the cathode, and a non-aqueous electrolyte, the electrolyte comprising an ionically conducting salt in a non-aqueous medium, the ionically conducting salt corresponding to the formula:Type: ApplicationFiled: November 7, 2002Publication date: June 12, 2003Inventor: Thomas J. Barbarich
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Publication number: 20030108799Abstract: The invention concerns an all-solid-state electrochemical generator (1) comprising a negative electrode (4) capable of supplying a lithium cation, an all-solid-state polymer electrolyte (3) formed with a macromolecular material wherein ionised lithium salt is dissolved and a second positive electrode capable of incorporating a non-ionised species corresponding to said lithium cation. The invention is characterised in that the all-solid-state polymer electrolyte comprises one or several fluorinated polymer(s) and the mass ratio macromolecular material/fluorinated polymer(s) ranges between 6 and 700.Type: ApplicationFiled: November 6, 2002Publication date: June 12, 2003Inventors: Stephane Lascaud, Marc Deschamps
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Patent number: 6566014Abstract: An ionic conductor according to the present invention includes an electrolyte salt for ionic conduction, an ionically conducting molecule including a molecular chain which provides an ion conducting pathway and a boroxine ring bonded to the molecular chain and trapping anions resulting from the electrolyte salt, and a structural member for dispersion and immobilization of the ionically conducting molecule and the electrolyte salt therein. The structural material gives the ionic conductor mechanical strength, the ionically conducting molecule provides an ion conducting pathway, and the electrolyte salt gives it ionic conductivity.Type: GrantFiled: June 2, 2000Date of Patent: May 20, 2003Assignees: Toyota Jidosha Kabushiki Kaisha, Genesis Research Institute, Inc.Inventors: Tatsuo Fujinami, Mary Anne Mehta
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Publication number: 20030087159Abstract: A polymer electrolyte includes a gel-forming polymer electrolyte including a gel-forming compound connected at metal cations, and an organic electrolyte of a lithium salt and an aprotic solvent. The polymer electrolyte includes a gel-forming polymer electrolyte that includes at least one aziridine ring-containing compound, and an organic electrolyte of lithium salt and aprotic solvent.Type: ApplicationFiled: June 19, 2002Publication date: May 8, 2003Applicant: SAMSUNG SDI Co., Ltd.Inventors: Cheol-Soo Jung, Takitaro Yamaguchi, Ryuichi Shimizu
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Publication number: 20030082458Abstract: A polymer electrolyte providing lithium secondary batteries in which growth of lithium dendrites is suppressed and batteries exhibiting excellent discharge characteristics in low to high temperature, comprising a polymer gel holding a nonaqueous solvent containing an electrolyte, wherein the polymer gel comprises (I) a unit derived from at least one monomer having one copolymerizable vinyl group and (II) a unit derived from at least one compound selected from the group consisting of (II-a) a compound having two acryloyl groups and a (poly)oxyethylene group, (II-b) a compound having one acryloyl group and a (poly)oxyethylene group, and (II-c) a glycidyl ether compound, particularly the polymer gel comprises monomer (I), compound (II-a), and a copolymerizable plasticizing compound.Type: ApplicationFiled: August 26, 2002Publication date: May 1, 2003Applicant: Noboru OYAMAInventor: Noboru Oyama
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Patent number: 6548212Abstract: The invention relates to the use of salt-based compounds as additives in electrolytes for improving the properties of electrochemical cells.Type: GrantFiled: March 13, 2000Date of Patent: April 15, 2003Assignee: Merck Patent GmbHInventors: Udo Heider, Michael Schmidt, Anja Amann, Marlies Niemann, Andreas Kühner
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Patent number: 6544691Abstract: An electrolyte system suitable for a molten salt electrolyte battery is described where the electrolyte system is a molten nitrate compound, an organic compound containing dissolved lithium salts, or a 1-ethyl-3-methlyimidazolium salt with a melting temperature between approximately room temperature and approximately 250° C. With a compatible anode and cathode, the electrolyte system is utilized in a battery as a power source suitable for oil/gas borehole applications and in heat sensors.Type: GrantFiled: October 11, 2000Date of Patent: April 8, 2003Assignee: Sandia CorporationInventor: Ronald A. Guidotti
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Patent number: 6537697Abstract: The lithium secondary battery of this invention uses a nonaqueous electrolyte including lithium tetrakis(pentafluorophenyl)borate as a part or whole of an electrolytic salt. As a result, the lithium secondary battery exhibits better charge-discharge cycle performance than a lithium secondary battery using a conventional lithium salt as the electrolytic salt.Type: GrantFiled: December 18, 2000Date of Patent: March 25, 2003Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshinori Kida, Katsunori Yanagida, Atsushi Yanai, Atsuhiro Funahashi, Toshiyuki Nohma, Ikuo Yonezu
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Patent number: 6537701Abstract: Batteries including a lithium anode stabilized with a metal-lithium alloy and battery cells comprising such anodes are provided. In one embodiment, an electrochemical cell having an anode and a sulfur electrode including at least one of elemental sulfur, lithium sulfide, and a lithium polysulfide is provided. The anode includes a lithium core and an aluminum-lithium alloy layer over the lithium core. In another embodiment, a surface coating, which is effective to increase cycle life and storageability of the electrochemical cell, is formed on the anode. In a more particular embodiment, the anode is in an electrolyte solution, and, more particularly, an electrolyte solution including either elemental sulfur, a sulfide, or a polysulfide where the surface coating is composed of Al2S3.Type: GrantFiled: November 15, 2000Date of Patent: March 25, 2003Assignee: PolyPlus Battery Company, Inc.Inventors: Yevgeniy S. Nimon, May-Ying Chu, Steven J. Visco
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Patent number: 6534214Abstract: A lithium secondary battery includes a positive electrode containing a first solid electrolyte; a negative electrode containing a second solid electrolyte; and a layer of a third solid electrolyte between the positive and negative electrodes.Type: GrantFiled: October 3, 2000Date of Patent: March 18, 2003Assignee: Sharp Kabushiki KaishaInventors: Motoaki Nishijima, Takehito Mitate, Kazuo Yamada, Naoto Nishimura, Naoto Torata
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Publication number: 20030035991Abstract: The invention provides an ion conducting membrane comprising dendrimeric polymers covalently linked into a network structure. The dendrimeric polymers of the invention have acid functional terminal groups and may be covalently linked via linking compounds, cross-coupling reactions, or copolymerization reactions. The invention also provides methods for producing the ion conducting membranes and fuel cells made from the membranes.Type: ApplicationFiled: March 25, 2002Publication date: February 20, 2003Applicant: The University of ChicagoInventors: Daniel G. Colombo, Michael Krumpelt, Deborah J. Myers, John P. Kopasz
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Publication number: 20030031933Abstract: A polymer electrolyte includes a modified polymeric material, the modified polymeric material including a halogen containing polymer having an enhanced halogen level, the enhanced halogen level relative to a halogen content of the halogen containing polymer formed from polymerization of its monomer. A salt of an alkali metal and an aprotic solvent are also provided. The salt and the aprotic solvent are integrated with the modified polymeric material. The halogen containing polymer is preferably polyvinylchloride (PVC) obtained by emulsion or suspension polymerization of vinylchloride. A method for preparing solid polymer electrolytes includes the steps of providing a halogen containing polymer, halogenating the halogen containing polymer, wherein an enhanced halogen containing modified polymer material results. The enhanced halogen level is relative to the halogen content of the halogen containing polymer formed from polymerization of its monomer.Type: ApplicationFiled: January 4, 2002Publication date: February 13, 2003Inventors: Elena M. Shembel, Oleg V. Chervakov, Peter Novak
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Publication number: 20030031923Abstract: To improve an impregnation property of an electrolyte and the cycle characteristics, which have been a problem in the case of employing a casing having a variable shape.Type: ApplicationFiled: August 27, 2002Publication date: February 13, 2003Applicant: Mitsubishi Chemical CorporationInventors: Takayuki Aoshima, Iwao Soga, Mitsuharu Kobayashi
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Publication number: 20030013021Abstract: An electrolyte composition excellent in charge-transporting property that can be prepared with ease, and a non-aqueous electrolyte secondary cell that comprises the electrolyte composition to exhibit excellent cell characteristics while preventing leakage or depletion of the electrolyte composition. The electrolyte composition comprises: a particular molten salt; a polymer prepared by a reaction between an electrophile having at least two unsaturated bonds polarized by an electron-withdrawing group and a nucleophile having a plurality of nucleophilic groups; and a metal salt containing a Group IA metal ion or a Group IIA metal ion.Type: ApplicationFiled: December 21, 2001Publication date: January 16, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Koji Wariishi
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Patent number: 6503662Abstract: A non-aqueous electrolyte containing a non-aqueous solvent, an electrolyte salt dissolved therein and a tert-butylbenzene derivative having the formula (I): wherein R1, R2, R3, R4 and R5 independently represent a hydrogen atom or C1 to C12 hydrocarbon group and a lithium secondary battery using the same.Type: GrantFiled: September 20, 2000Date of Patent: January 7, 2003Assignee: UBE Industries, LTD.Inventors: Toshikazu Hamamoto, Koji Abe, Yasuo Matsumori
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Publication number: 20030003368Abstract: A polymer electrolyte is formed by curing a composition prepared by mixing a polymer of compounds of polyethylene glycol di(meth)acrylates and/or multi-functional ethyleneoxides; one selected from a vinylacetate monomer, a (meth)acryalte monomer, and a mixture of a vinylacetate monomer and a (meth)acrylate monomer; and an electrolytic solution containing a lithium salt and an organic solvent.Type: ApplicationFiled: May 2, 2002Publication date: January 2, 2003Inventors: Kyoung-hee Lee, Ki-ho Kim
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Patent number: 6495293Abstract: An organic electrolyte and polymer is provided wherein diffusivity of mobile ions is enhanced; and a lithium primary battery, lithium secondary battery, polymer secondary battery, and electrochemical capacitor, is provided which have increased capacities at a low temperature. A non-aqueous electrolyte and polymer electrolyte, wherein a fluorinated solvent having a fluorinated alkyl group, of which the terminal end structure is an unsymmetrical structure, is mixed with the electrolyte, is provided for use in various applications.Type: GrantFiled: August 24, 2000Date of Patent: December 17, 2002Assignee: Hitachi, Ltd.Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi
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Publication number: 20020172859Abstract: A polymer electrolyte precursor comprising a VdF-HFP copolymer, a lithium and a plasticizer is used for the preparation of a bellcore-type polymer battery having improved impedence, low-temperature characteristics, cycle life and self-discharge properties.Type: ApplicationFiled: May 9, 2002Publication date: November 21, 2002Inventors: Kwon-Sun Roh, Jong-Hyuk Choi, Dong-Joon Ihm, Jon-Ha Lee
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Patent number: 6482550Abstract: A non-aqueous secondary battery comprising a negative electrode made of an active negative electrode material capable of intercalating/deintercalating lithium ion, a positive electrode made of spinnel type lithium manganese oxide as a main active positive electrode material and an electrolyte containing a non-aqueous solvent is characterized in that said positive electrode comprises lithium cobalt oxide in admixture with spinnel type lithium manganese oxide having crystal lattices partially substituted by magnesium or aluminum and said non-aqueous solvent comprises vinylene carbonate incorporated therein.Type: GrantFiled: November 3, 2000Date of Patent: November 19, 2002Assignee: Sanyo Electric Co., Ltd.Inventors: Naoki Imachi, Hiroshi Watanabe, Satoshi Narukawa
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Publication number: 20020160271Abstract: The present invention is directed to a polymer electrolyte comprising amine groups dispersed throughout the polymer backbone, including various poly(ethylenimine)-based polymers, which enable ionic movement for use in various applications, including for example batteries, fuel cells, sensors, supercapacitors and electrochromic devices. The present invention is further directed to a method for preparing such polymer electrolytes.Type: ApplicationFiled: December 31, 2001Publication date: October 31, 2002Applicant: The Board of Reagents of the University of OklahomaInventors: Roger E. Frech, Daniel T. Glatzhofer
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Patent number: 6472104Abstract: The invention relates to a process for preparing a solid organic-inorganic hybrid polymer electrolyte containing lithium ions. The product shows high strength conductivity and lithium transference values. Further, the product can be self-organized into nanometer scale plates and rods paving the way to making lithium conducting cables for example and hence batteries of nanometer size.Type: GrantFiled: March 20, 2000Date of Patent: October 29, 2002Inventors: Ralph Ulrich, Josef W. Zwanziger, Susan de Paul, Hans Wolfgang Spiess, Ulrich Wiesner