Alkalated Carbon, Graphite, Or Carbonaceous Component Is Active Material Patents (Class 429/231.4)
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Patent number: 8900754Abstract: The present invention provides an electrode comprising a carbon material obtained from an azulmic acid and a current collector and/or a binder.Type: GrantFiled: June 17, 2013Date of Patent: December 2, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Hidenori Hinago, Masashi Ishikawa
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Publication number: 20140349187Abstract: A secondary battery capable of obtaining superior battery characteristics is provided. The secondary battery of the present technology includes a cathode, an anode including an active material, and an electrolytic solution. The active material includes a core section and covering section, the core section being capable of inserting and extracting lithium ions, and the covering section being provided in at least part of a surface of the core section and being a low-crystalline or a noncrystalline. The core section includes Si and O as constituent elements, and an atom ratio x (O/Si) of O with respect to Si satisfies O?x<0.5. The covering section includes Si and O as constituent elements, and an atom ratio y (O/Si) of O with respect to Si satisfies 0.5?y?1.8. The covering section has voids, and a carbon-containing material is provided in at least part of the voids.Type: ApplicationFiled: December 5, 2012Publication date: November 27, 2014Inventors: Takakazu Hirose, Kenichi Kawase, Norihiro Shimoi, Shinji Tanaka
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Publication number: 20140349186Abstract: A method of modifying the surface of carbon materials such as vapor grown carbon nanofibers is provided in which silicon is deposited on vapor grown carbon nanofibers using a chemical vapor deposition process. The resulting silicon-carbon alloy may be used as an anode in a rechargeable lithium ion battery.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: David J. Burton, Max L. Lake, Maryam Nazri
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Publication number: 20140349190Abstract: Provided is a silicon oxide for an anode of a secondary battery, having a good mechanical lifespan and electrical properties, and a method for preparing the same and an anode of a secondary battery using the silicon oxide. According to the method, a mixture is prepared by mixing SiCl4 and ethylene glycol, a gel is manufactured by stirring the mixture, and the gel is heat treated to prepare silicon oxide for an anode of a secondary battery.Type: ApplicationFiled: February 10, 2012Publication date: November 27, 2014Applicant: Yeil Electronics Co., Ltd.Inventor: Yun-Kyu Kang
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Publication number: 20140349189Abstract: A lithium secondary battery 10 of the present invention is a secondary battery provided with a positive electrode 30 having a positive electrode active material layer 34 on a positive electrode collector 32, and a negative electrode 50 having a negative electrode active material layer 54 on a negative electrode collector 52. The positive electrode active material layer 34 contains a positive electrode active material capable of reversibly storing and releasing lithium ions. The negative electrode active material layer 54 contains a negative electrode active material made up of lamellar graphite that is bent so as to have an average number of bends f per particle of 0<f?3, and an average aspect ratio of 1.8 or higher.Type: ApplicationFiled: December 21, 2011Publication date: November 27, 2014Inventors: Koji Takahata, Hideki Sano
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Publication number: 20140342233Abstract: The present invention relates to a sulfur-carbon composite, comprising a pyrolysis microporous carbon sphere (PMCS) substrate and sulfur loaded into said pyrolysis microporous carbon sphere (PMCS) substrate; as well as a method for preparing said sulfur-carbon composite, an electrode material and a lithium-sulfur battery comprising said sulfur-carbon composite.Type: ApplicationFiled: November 29, 2011Publication date: November 20, 2014Applicant: ROBERT BOSCH GMBHInventors: Yuguo Guo, Sen Xin, Nahong Zhao, Longjie Zhou
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Publication number: 20140342229Abstract: Disclosed are a cathode active material for a lithium secondary battery, and a lithium secondary battery including the same. The disclosed cathode active material includes a core including a compound represented by Formula 1; and a shell including a compound represented by Formula 2, in which the core and the shell have different material compositions.Type: ApplicationFiled: December 12, 2012Publication date: November 20, 2014Inventors: Byung-Sung Leo Kwak, Joseph G. Gordon, II, Omkaram Nalamasu, Yangkook Sun, Wongi Kim, Seugmin Oh
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Publication number: 20140342232Abstract: A process of producing active material for an electrode of an electrochemical cell includes providing lithium-intercalating carbon particles having an average particle size of 1 ?m to 100 ?m as component 1, providing silicon particles having an average particle size of 5 nm to 500 nm as component 2, providing a polymer or polymer precursor which can be pyrolyzed to form amorphous carbon and is selected from the group consisting of epoxy resin, polyurethane resin and polyester resin, as component 3, mixing components 1 to 3 in to a mixture and heat treating the mixture substatually in the absence of atmospheric oxygen at a temperature at which the pyrolyzable polymer or the pyrolyzable polymer precursor decomposes to form amorphous carbon.Type: ApplicationFiled: September 19, 2012Publication date: November 20, 2014Inventors: Michaela Scharfegger, Harald Kren, Stefan Koller
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Publication number: 20140342234Abstract: The present invention relates to a sulfur-carbon composite made from microporous-carbon-coated carbon nanotube (CNT@MPC) composites, in particular a sulfur-carbon composite, which comprises a carbon-carbon composite substrate (CNT@MPC) and sulfur loaded into said carbon-carbon composite substrate (CNT@MPC); as well as a method for preparing said sulfur-carbon composite, an electrode material and a lithium-sulfur battery comprising said sulfur-carbon composite.Type: ApplicationFiled: November 29, 2011Publication date: November 20, 2014Applicant: ROBERT BOSCH GMBHInventors: Yuguo Guo, Sen Xin, Nahong Zhao, Longjie Zhou
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Publication number: 20140322608Abstract: A method of graphitic petal synthesis includes a step of providing a flexible carbon substrate, such as that including carbon microfibers. The method further includes the step of subjecting flexible carbon substrate to microwave plasma enhanced chemical vapor deposition. The resulting synthesized graphitic petal structure may optionally be coated with PANI.Type: ApplicationFiled: February 14, 2014Publication date: October 30, 2014Applicant: PURDUE RESEARCH FOUNDATIONInventors: Jonathan Clay Claussen, Anurag Kumar, Timothy S. Fisher, Ronald G. Reifenberger, Guoping Xiong, David Benjamin Jaroch, David Marshall Porterfield
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Patent number: 8859143Abstract: A surface-enabled, metal ion-exchanging battery device comprising a cathode, an anode, a porous separator, and a metal ion-containing electrolyte, wherein the metal ion is selected from (A) non-Li alkali metals; (B) alkaline-earth metals; (C) transition metals; (D) other metals such as aluminum (Al); or (E) a combination thereof; and wherein at least one of the electrodes contains therein a metal ion source prior to the first charge or discharge cycle of the device and at least the cathode comprises a functional material or nano-structured material having a metal ion-capturing functional group or metal ion-storing surface in direct contact with said electrolyte, and wherein the operation of the battery device does not involve the introduction of oxygen from outside the device and does not involve the formation of a metal oxide, metal sulfide, metal selenide, metal telluride, metal hydroxide, or metal-halogen compound.Type: GrantFiled: January 3, 2011Date of Patent: October 14, 2014Assignee: Nanotek Instruments, Inc.Inventors: Aruna Zhamu, ChenGuang Liu, David Neff, Bor Z. Jang, Zhenning Yu
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Patent number: 8859149Abstract: A lithium secondary battery that has high capacity and excellent cycle characteristics is provided. The lithium ion secondary battery includes a cathode, an anode, and an electrolyte. The anode has, on an anode current collector, an anode active material layer including LixSiFy (1?x?2 and 5?y?6) as an anode active material.Type: GrantFiled: May 19, 2011Date of Patent: October 14, 2014Assignee: Sony CorporationInventor: Toshikazu Nakamura
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Publication number: 20140295298Abstract: Some batteries can exhibit greatly improved performance by utilizing electrodes having randomly arranged graphene nanosheets forming a network of channels defining continuous flow paths through the electrode. The network of channels can provide a diffusion pathway for the liquid electrolyte and/or for reactant gases. Metal-air batteries can benefit from such electrodes. In particular Li-air batteries show extremely high capacities, wherein the network of channels allow oxygen to diffuse through the electrode and mesopores in the electrode can store discharge products.Type: ApplicationFiled: May 6, 2014Publication date: October 2, 2014Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jiguang Zhang, Jie Xiao, Jun Liu, Wu Xu, Xiaolin Li, Deyu Wang
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Publication number: 20140272545Abstract: A secondary cell has a positive electrode, a negative electrode, and an electrolyte, and the positive electrode contains insoluble sulfur.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: Sony CorporationInventors: Yosuke Saito, Kazumasa Takeshi, Masataka Nakajin
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Patent number: 8835047Abstract: According to one embodiment, a negative electrode active material for a non-aqueous electrolyte secondary battery cell includes a composite. The composite includes a carbonaceous material, a silicon oxide dispersed in the carbonaceous material, and a silicon dispersed in the silicon oxide. A half-value width of a diffraction peak of a Si (220) plane in powder X-ray diffraction measurement of the composite is in a range of 1.5° to 8.0°. A mean size of a silicon oxide phase is in a range of 50 nm to 1,000 nm. A value of (a standard deviation)/(the mean size) is equal to or less than 1.0 where the standard deviation of a size distribution of the silicon oxide phase is defined by (d84%?d16%)/2.Type: GrantFiled: June 27, 2012Date of Patent: September 16, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Tomokazu Morita, Norio Takami, Takashi Kuboki
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Patent number: 8808911Abstract: A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. The cathode active material includes a layered type lithium transition metal oxide. A material of the coating layer is a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material.Type: GrantFiled: November 30, 2012Date of Patent: August 19, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Jun Lu, Ding-Sheng Wang, Xiang-Wen Liu, Qing Peng
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Patent number: 8808915Abstract: The rechargeable lithium battery includes a positive electrode which includes a positive active material, a negative electrode, and an electrolyte which includes a non-aqueous organic solvent and a lithium salt. The positive active material includes a core including at least one of a compound represented by Formula 1 and a compound represented by Formula 2, and a surface-treatment layer which is formed on the core and includes a compound represented by Formula 3. The lithium salt includes LiPF6 and a lithium imide-based compound. LiaNibCocMndMeO2??(1) LihMn2MiO4??(2) M?xPyOz??(3) wherein each of M and M? is independently selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and combinations thereof, 0.95?a?1.1, 0?b?0.999, 0?c?0.999, 0?d?0.999, 0.001?e?0.2, 0.95?h?1.1, 0.001?i?0.2, 1?y?4, 0?y?7, and 2?z?30.Type: GrantFiled: August 10, 2007Date of Patent: August 19, 2014Assignee: Samsung SDI Co., Ltd.Inventors: So-Hyun Hur, Euy-Young Jung, Duck-Chul Hwang, Yong-Chul Park, Jong-Hwa Lee, Jeom-Soo Kim, Jae-Yul Ryu, Jin-Bum Kim
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Patent number: 8808918Abstract: The rechargeable lithium battery of the present invention includes a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte. The positive active material includes a core and a coating layer formed on the core. The core is made of a material such as LiCo0.98M?0.02O2, and the coating layer is made of a material such as MxPyOz. The electrolyte solution includes a nitrile-based additive. The rechargeable lithium battery of the present invention shows higher cycle-life characteristics and longer continuous charging time at high temperature.Type: GrantFiled: June 12, 2007Date of Patent: August 19, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Jeom-Soo Kim, Jong-Hwa Lee, Yong-Chul Park, Jae-Yul Ryu, So-Hyun Hur
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Publication number: 20140227600Abstract: The purpose of the present invention is to provide: a composite active material for lithium secondary batteries, which is capable of providing a lithium secondary battery that has large charge and discharge capacity, high-rate charge and discharge characteristics and good cycle characteristics at the same time; and a method for producing the composite active material for lithium secondary batteries.Type: ApplicationFiled: August 10, 2012Publication date: August 14, 2014Inventor: Naoyoshi Kachi
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Patent number: 8802291Abstract: A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. The cathode active material includes a layered type lithium nickel cobalt manganese oxide. The coating layer comprises a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material.Type: GrantFiled: November 30, 2012Date of Patent: August 12, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Jun Lu, Ding-Sheng Wang, Qing Peng
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Patent number: 8802300Abstract: A rechargeable lithium battery including a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte including a non-aqueous organic solvent and a lithium salt. The positive electrode has an active-mass density of about 3.7 to 4.1 g/cc, and the non-aqueous electrolyte includes a nitrile-based compound additive, a non-aqueous organic solvent, and a lithium salt.Type: GrantFiled: October 23, 2007Date of Patent: August 12, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Jong-Hwa Lee, Duck-Chul Hwang, Jeom-Soo Kim, Yong-Chul Park, Jae-Yul Ryu, Euy-Young Jung, So-Hyun Hur
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Patent number: 8802290Abstract: A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. A material of the coating layer is a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material.Type: GrantFiled: November 30, 2012Date of Patent: August 12, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Jun Lu, Cai-Yun Nan, Li-Hong Li, Qing Peng
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Patent number: 8795892Abstract: A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. The cathode active material includes a lithium cobalt oxide. The coating layer includes a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material.Type: GrantFiled: November 30, 2012Date of Patent: August 5, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Ya-Dong Li, Jun Lu, Wei-Yang Wang, Ding-Sheng Wang, Qing Peng
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Patent number: 8795898Abstract: An object of the present invention is to provide a lithium secondary battery which has improved capacity, durability, and the other characteristic as compared with conventional lithium secondary batteries. A plate-like particle or a film for a lithium secondary battery cathode active material has a layered rock salt structure. The lithium ion gateway plane is oriented in parallel with a plate surface, which is a surface orthogonal to a thickness direction of the particle and thus exposed at the plate surface, a plurality of layers are stacked together in the thickness direction, and while the layers have the same crystal axis in the thickness direction, as for the plate surface direction perpendicular to the thickness direction, the layers have different crystal axes.Type: GrantFiled: December 22, 2009Date of Patent: August 5, 2014Assignee: NGK Insulators, Ltd.Inventors: Ryuta Sugiura, Nobuyuki Kobayashi, Shohei Yokoyama, Tsutomu Nanataki
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Patent number: 8792224Abstract: Disclosed herein is a hybrid capacitor including: a first structure including a cathode containing activated carbon and an anode containing lithium; and a second structure including activated carbon layers formed on both surfaces of a current collector. With the hybrid capacitor, characteristics of an LIC and characteristics of an EDLC are implemented in a single cell, thereby making it possible to increase energy density and improve output characteristics.Type: GrantFiled: April 16, 2012Date of Patent: July 29, 2014Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Hak Kwan Kim, Dong Hyeok Choi, Bae Kyun Kim, Jun Hee Bae
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Publication number: 20140186706Abstract: A method is presented for fabricating an anode preloaded with consumable metals. The method provides a material (X), which may be one of the following materials: carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. The method loads the metal (Me) into the material (X). Typically, Me is an alkali metal, alkaline earth metal, or a combination of the two. As a result, the method forms a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N·MH2O cathode, where M1 and M2 are transition metals. The method loads the metal (Me) into the material (X) using physical (mechanical) mixing, a chemical reaction, or an electrochemical reaction. Also provided is preloaded anode, preloaded with consumable metals.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Sharp Laboratories of America, Inc.Inventors: Long Wang, Yuhao Lu, Jong-Jan Lee
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Publication number: 20140186707Abstract: A method is provided for fabricating a battery using an anode preloaded with consumable metals. The method forms an ion-permeable membrane immersed in an electrolyte. A preloaded anode is immersed in the electrolyte, comprising MeaX, where X is a material such as carbon, metal capable of being alloyed with Me, intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. Me is a metal such as alkali metals, alkaline earth metals, and combinations of the above-listed metals. A cathode is also immersed in the electrolyte and separated from the preloaded anode by the ion-permeable membrane. The cathode comprises M1YM2Z(CN)N.MH2O. After a plurality of initial charge and discharge operations are preformed, an anode is formed comprising MebX overlying the current collector in a battery discharge state, where 0?b<a.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Sharp Laboratories of America, Inc.Inventors: Yuhao Lu, Long Wang, Jong-Jan Lee
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Publication number: 20140178762Abstract: Disclosed are a negative active material for a rechargeable lithium battery including a spherically-shaped natural graphite-modified composite particle including: a spherically-shaped natural graphite particle where flake-shaped natural graphite fragments build up and assemble into a cabbage or random shape; and amorphous or semi-crystalline carbon, wherein an open gap between the flake-shaped natural graphite fragments is positioned on a surface part or inside the spherically-shaped natural graphite particle, the amorphous or semi-crystalline carbon is coated on the surface of the spherically-shaped natural graphite particle, and the amorphous or semi-crystalline carbon is present in the open gap, and thereby the open gap positioned on the surface part and inside the spherically-shaped natural graphite particle is maintained, a method of preparing the same, and a rechargeable lithium battery including the same.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Applicant: KNU-Industry Cooperation FoundationInventors: Sung-Man LEE, Yoon-Soo Park
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Patent number: 8758945Abstract: The over charge protection of a lithium ion cell is improved by using an electrolyte comprising at least one redox shuttle additive that comprises an in situ generated soluble oxidizer or oxidant to accelerate other forms of chemical overcharge protection. The oxidizer can be employed in combination with radical polymerization additives.Type: GrantFiled: March 5, 2008Date of Patent: June 24, 2014Assignee: Air Products and Chemicals, Inc.Inventor: William Jack Casteel, Jr.
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Patent number: 8709661Abstract: Provided is a secondary battery capable of improving charge-discharge characteristics. A positive electrode active material layer of a positive electrode has a positive electrode active material and a positive electrode conductive agent. The positive electrode active material is a high-voltage operating positive electrode material whose operating voltage is equal to or more than 4.5 V on a lithium metal basis. The positive electrode conductive agent contains an amorphous carbon material and a crystalline carbon material, and an interplanar spacing for lattice plane (002), a specific surface area, and a content in the positive electrode active material layer, thereof are so normalized as to be in predetermined ranges, respectively.Type: GrantFiled: July 21, 2010Date of Patent: April 29, 2014Assignee: Sony CorporationInventor: Mikio Watanabe
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Patent number: 8697285Abstract: To provide a carbon material capable of suppressing excessive reactivity with an electrolytic solution and excellent in a rapid charge/discharge characteristics. A carbon material for lithium ion secondary batteries, which satisfies: (i) a tap density?0.75 g/cm3; (ii) a Raman R value?0.23 and a half width of D band ??D<45 cm?1, in which the D band appears in the vicinity of 1,358 cm?1 of the Raman spectrum; and (iii) 4 m2/g?BET specific surface area (SA)?11 m2/g.Type: GrantFiled: October 30, 2009Date of Patent: April 15, 2014Assignee: Mitsubishi Chemical CorporationInventors: Hiroyuki Uono, Hideharu Sato, Hitoshi Matsumoto, Atsuyoshi Inoue
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Patent number: 8697294Abstract: The battery includes a solid electrolyte activating a positive electrode and a negative electrode. The electrolyte is a solid including a lithium ion conductive glass-ceramic. The negative electrode includes a buffer layer between a negative medium and the electrolyte. The negative medium includes one or more primary negative active materials. The buffer layer includes one or more secondary negative active materials that do not dissolve the lithium ion conductive glass-ceramic. The secondary negative active materials can have a redox potential greater than 0.5 V vs Li/Li+.Type: GrantFiled: September 4, 2008Date of Patent: April 15, 2014Assignee: Quallion LLCInventors: Hisashi Tsukamoto, Ryo Tamaki, Mikito Nagata, Hiroshi Nakahara
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Patent number: 8697286Abstract: An anode active material for lithium batteries, an anode including the anode active material, a method of manufacturing the anode, and a lithium battery including the anode. The anode active material includes secondary particles formed of agglomerated primary nanoparticles. The primary nanoparticles include a non-carbonaceous material bound with hollow carbon nanofibers. The anode includes the anode active material and a polymeric binder having an electron donor group.Type: GrantFiled: October 2, 2009Date of Patent: April 15, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-hee Lee, Ho-suk Kang, Jeong-na Heo
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Publication number: 20140065486Abstract: A negative-electrode material is a carbonaceous negative-electrode material used in an alkali metal ion battery and an average layer spacing d002 of face (002) calculated by an X-ray diffraction method using CuK? radiation as a radiation source is equal to or more than 0.340 nm. When the negative-electrode material is embedded in an epoxy resin, the epoxy resin is cured, the resultant cured material is cut and polished to expose a cross-section of the negative-electrode material, and the cross-section is observed in a bright field with 1000 times magnification using an optical microscope, a first region and a second region having different reflectance ratios are observed from the cross-section of the negative-electrode material.Type: ApplicationFiled: August 16, 2013Publication date: March 6, 2014Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Yukiharu Ono, Takeshi Takeuchi, Tsuyoshi Watanabe
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Patent number: 8637183Abstract: An expander formulation used in battery paste compositions. The expander formulation incorporates effective amounts, or elevated concentrations of up to 6% of graphite and mixtures of carbon black and graphite to lessen or minimize the accumulation of lead sulfate on the surface of the negative plate during high rate PSOC battery operation, and/or to increase the electrochemical efficiency, the reserve capacity, the cold cranking performance and the cycle life of lead-acid batteries.Type: GrantFiled: September 2, 2008Date of Patent: January 28, 2014Assignee: Hammond Group, Inc.Inventors: David Paul Boden, Daniel V. Loosemore
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Patent number: 8623553Abstract: The present disclosure relates generally to a high capacity cathode material suitable for use in a non-aqueous electrochemical cell that comprises a mixture of at least three different cathode materials, and more specifically a mixture of fluorinated carbon, an oxide of copper and an oxide of manganese. The present disclosure additionally relates to a non-aqueous electrochemical cell comprising such a cathode material and, in particular, to such a non-aqueous electrochemical cell that can deliver a higher capacity than a conventional cell, and/or that possesses an improved end-of-life indication.Type: GrantFiled: March 17, 2010Date of Patent: January 7, 2014Assignee: Eaglepicher Technologies, LLCInventors: Dong Zhang, Ernest Ndzebet, Min Qi Yang, Viet Vu, Umamaheswari Janakiraman, Mario Destephen
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Publication number: 20130309572Abstract: The present invention relates to dual-layered structured sulfur cathodes comprising (a) an electroactive layer and (b) a non-electroactive conductive layer, wherein the non-electroactive conductive layer adsorbs soluble polysulfides and provides reaction sites for the reduction of polysulfides. The present invention also relates to method of making dual-layered structured sulfur cathodes and electrochemical cells.Type: ApplicationFiled: May 21, 2012Publication date: November 21, 2013Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: Shengshui Zhang, Jeffrey A. Read
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Patent number: 8580429Abstract: Disclosed are (1) a nonaqueous electrolytic solution for lithium battery comprising an electrolyte dissolved in a nonaqueous solvent, which contains at least one hydroxy acid derivative compound represented by the formulae (I) and (II) in an amount of from 0.Type: GrantFiled: March 10, 2009Date of Patent: November 12, 2013Assignee: Ube Industries, Ltd.Inventors: Koji Abe, Kazuyuki Kawabe
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Patent number: 8568924Abstract: An improved anode material for a lithium ion battery is disclosed. The improved anode material can improve both electric conductivity and the mechanical resilience of the anode, thus drastically increasing the lifetime of lithium ion batteries.Type: GrantFiled: November 30, 2011Date of Patent: October 29, 2013Assignee: CNano Technology LimitedInventors: Jun Ma, Zhaojie Wei, Guanghui Feng, Bin He, Gang Xu, Tao Zheng
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Patent number: 8563169Abstract: Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.Type: GrantFiled: August 14, 2012Date of Patent: October 22, 2013Assignee: Battelle Memorial InstituteInventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Rong Kou, Zimin Nie, Donghai Wang, Zhenguo Yang
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Patent number: 8557442Abstract: Nanocomposite materials comprising a metal oxide bonded to at least one graphene material. The nanocomposite materials exhibit a specific capacity of at least twice that of the metal oxide material without the graphene at a charge/discharge rate greater than about 10 C.Type: GrantFiled: July 26, 2012Date of Patent: October 15, 2013Assignees: Battelle Memorial Institute, Trustees of Princeton UniversityInventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Donghai Wang, Zhenguo Yang
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Patent number: 8546042Abstract: In a membrane electrode assembly of the present invention, at least one of a catalyst layer of an oxygen electrode and a catalyst layer of a fuel electrode includes a supported catalyst supporting a metal catalyst containing a platinum group element, a proton conductive polymer electrolyte, and at least one selected from (a) a complex-forming agent having a ligand that forms coordinate bonds with ions of the platinum group element and forms a complex, the ligand containing oxygen as a coordinating atom, (b) a complex of the platinum group element, a ligand of the complex containing oxygen as a coordinating atom, and (c) carbon that has a BET specific surface area of 100 m2/g or greater, satisfies at least one of (i) an R value of Raman spectrum of 0.5 or less and (ii) a lattice spacing d002 between (002) planes of 0.35 nm or less, and does not support the metal catalyst.Type: GrantFiled: September 13, 2007Date of Patent: October 1, 2013Assignee: Hitachi Maxell, Ltd.Inventors: Kohei Ugawa, Hiroshi Kashino, Norihisa Yoshimoto, Shoji Saibara
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Patent number: 8530089Abstract: A negative electrode, a lithium battery employing the negative electrode, and a method of preparing the negative electrode. The negative electrode includes a current collector, and a negative electrode active material layer disposed on the current collector. The negative electrode active material layer includes: composite negative electrode active material particles comprising tin (Sn), and conductive metal particles. The conductive metal particles form an intermetallic compound with the Sn, and an average particle size of the conductive metal particles is at least 10 ?m.Type: GrantFiled: August 10, 2010Date of Patent: September 10, 2013Assignees: Samsung SDI Co., Ltd., SNU R&DB FoundationInventors: Dong-min Im, Hun-joon Sohn, Jae-myung Lee, Won-seok Chang, Hee-chul Jung
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Patent number: 8530080Abstract: A nonaqueous electrolytic solution that provides a lithium secondary battery with excellent electrical capacity, cycling properties, storage properties and other battery characteristics and that maintains the battery characteristics for a long time; and a lithium secondary battery comprising it. A nonaqueous electrolytic solution comprising an electrolytic salt dissolved in a nonaqueous solvent, containing 0.1 to 10% by weight of an ethylene carbonate derivative represented by the general formula (I), and 0.Type: GrantFiled: September 14, 2012Date of Patent: September 10, 2013Assignee: UBE Industries, Ltd.Inventors: Koji Abe, Takaaki Kuwata
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Publication number: 20130209887Abstract: Disclosed is an anode for a lithium battery comprising a body of carbon, such as graphitic carbon, having a layer of a Group IV element or Group IV element-containing substance disposed upon its electrolyte contacting surface. Further disclosed is an anode comprising a body of carbon having an SEI layer formed thereupon by interaction of a layer of Group IV element or Group IV element-containing substance with an electrolyte material during the initial charging of the battery.Type: ApplicationFiled: February 9, 2012Publication date: August 15, 2013Applicant: Ovonic Battery Company, Inc.Inventor: KWO YOUNG
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Publication number: 20130202967Abstract: A negative active material for a rechargeable lithium battery includes a matrix including an Si—X based alloy, where X is not Si and is selected from alkali metals, alkaline-earth metals, Group 13 elements, Group 14 elements, Group 15 elements, Group 16 elements, transition elements, rare earth elements, or combinations thereof; silicon dispersed in the matrix; and oxygen in the negative active material, the oxygen being included at 20 at % or less based on the total number of atoms in the negative active material. A rechargeable lithium battery includes the negative active material.Type: ApplicationFiled: July 12, 2012Publication date: August 8, 2013Inventors: Jae-Hyuk Kim, Sung-Hwan Moon, Seung-Uk Kwon, Soon-Sung Suh, Chang-Ui Jeong, Yo-Han Park, Chun-Gyoo Lee, Yury Matulevich, Jong-Seo Choi
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Patent number: 8492029Abstract: An anode of a lithium battery includes a free-standing carbon nanotube film, the carbon nanotube film comprising a plurality of carbon nanotubes, the carbon nanotubes are substantially parallel to a surface of the carbon nanotube film. A method for fabricating an anode of a lithium battery, the method includes the steps of (a) providing an array of carbon nanotubes; and (b) providing a pressing device to press the array of carbon nanotubes to form a carbon nanotube film, and thereby, achieving the anode of lithium battery.Type: GrantFiled: December 29, 2007Date of Patent: July 23, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chang-Hong Liu, Shou-Shan Fan
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Patent number: 8486565Abstract: The present invention provides an electrode comprising a carbon material obtained from an azulmic acid and a current collector and/or a binder.Type: GrantFiled: March 27, 2008Date of Patent: July 16, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Hidenori Hinago, Masashi Ishikawa
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Publication number: 20130177808Abstract: An anode protector of a lithium-ion battery and a method for fabricating the same are provided. A passivation protector (110) is formed on a surface of an anode (102) in advance by film deposition, such as atomic layer deposition (ALD). The passivation protector (110) is composed of a metal oxide having three dimensional structures, such as columnar structures. Accordingly, the present invention is provided with effective protection of the anode electrode structure and maintenance of battery cycle life under high-temperature operation.Type: ApplicationFiled: March 2, 2012Publication date: July 11, 2013Applicant: National Taiwan University of Science and TechnologyInventors: Fu-Ming Wang, Hsin-Yi Wang, Chin-Shu Cheng
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Patent number: 8440349Abstract: The present invention provides a nonaqueous electrolytic solution exhibiting excellent battery characteristics such as electrical capacity, cycle property and storage property and capable of maintaining the battery characteristics for a long time, and a lithium secondary battery using the nonaqueous electrolytic solution. A nonaqueous electrolytic solution for a lithium secondary battery, in which an electrolyte salt is dissolved in a nonaqueous solvent, containing 0.1 to 10% by weight of an ethylene carbonate derivative represented by the general formula (I) shown below, and 0.Type: GrantFiled: June 1, 2010Date of Patent: May 14, 2013Assignee: UBE Industries, Ltd.Inventors: Koji Abe, Takaaki Kuwata