Abstract: An electrode for a rechargeable lithium ion battery includes an electro-active material, a (polystyrenebutadiene rubber)-poly (acrylonitrile-co-acrylamide) polymer, and a conductive additive. A battery using the inventive electrode is also disclosed.
Type:
Grant
Filed:
March 28, 2011
Date of Patent:
January 10, 2012
Assignee:
International Battery, Inc.
Inventors:
Milburn Ebenezer Jacob Muthu, Monira Mamari, Chester Crane
Abstract: An alkaline, rechargeable electrochemical cell includes a pasted electrode structure in which a composition comprising a paste matrix component includes cobalt in an amount greater than 6 weight percent ranging up to 14 weight percent. The matrix may also include a rare earth such as yttrium. The composition further includes particles of nickel hydroxide dispersed in the matrix, and these particles include cobalt levels ranging from greater than 8 atomic percent up to 15 atomic percent. Cells incorporating these materials have good charging efficiency at elevated temperatures.
Abstract: A cathode composition for lithium ion and lithium metal batteries includes a transitional metal oxide and an adsorbate layer disposed on a surface of the transitional metal oxide. The transitional metal oxide and the adsorbate layer are both electrochemically active. A method of forming cathode materials for lithium ion and lithium metal batteries includes the steps of providing reagents including at least one elemental chalcogenide or chalcogenic oxide and a transitional metal oxide. The reagents are heated, wherein a cathode composition is formed having a chalcogenic complex adsorbed to a bulk material, the bulk material being a modification of the transitional metal oxide. The transitional metal oxide is preferably a vanadium oxide.
Type:
Grant
Filed:
May 30, 2002
Date of Patent:
July 12, 2005
Assignee:
Enerl Battery Company
Inventors:
Vadim Gorchkov, Peter Novak, Oleg Volkov
Abstract: Provided are a positive electrode material for lithium ion batteries and a process for preparing the same. The positive electrode material for lithium ion batteries comprises a composite positive electrode material consists of LiCoO2 and an auxiliary positive electrode material, the general formula of the auxiliary positive electrode material is LiCo1?x?yNixMnyO2, wherein 0<x<0.9, 0<y<0.9, 0<x+y<0.9, and the LiCoO2 is a modified LiCoO2 coated with an Al2O3 film. The overcharge performance of the batteries can be significantly increased and the use amount of the overcharge additive can be reduced by using the positive electrode material so as to its improve the cycle performance of the batteries and improve the anti-overcharge safety in the special applications and the charging conditions.
Type:
Application
Filed:
December 22, 2009
Publication date:
January 19, 2012
Applicant:
SHENZHEN BAK BATTERY CO., LTD.
Inventors:
Xin Teng, Wei He, Ming He, Ruyu Rao, Bin Xiao, Qiming Pan
Abstract: A nickel-metal hydride secondary battery comprising electrode group comprising positive electrode comprised mainly of nickel hydroxide, negative electrode comprised mainly of a hydrogen storage alloy, and separator being disposed between the positive electrode and the negative electrode, wherein the electrode group is sealed in battery casing, together with an alkali electrolyte liquid, wherein, in the battery, a W element and an Na element are present simultaneously. The nickel-metal hydride secondary battery of the present invention is advantageous not only in that it exhibits high utilization of the active material and excellent self-discharge characteristics in a high temperature storage as well as high charging efficiency in a high temperature environment, but also in that it has excellent large current discharge characteristics.
Abstract: According to one embodiment, there is provided a battery electrode. The battery electrode includes a titanium oxide compound having a monoclinic titanium dioxide crystal structure and a basic polymer.
Abstract: A battery active material according to an embodiment includes a niobium composite oxide and a phosphorus compound being present in at least a part of the surface of the niobium composite oxide. A nonaqueous electrolyte battery according to the embodiment includes a negative electrode including the battery active material according to the embodiment, a positive electrode, and a nonaqueous electrolyte. A battery pack according to the embodiment includes at least one nonaqueous electrolyte battery according to the embodiment.
Abstract: A cathode material includes a primary active cathode material and an amount of NiS2. Primary batteries (e.g., thermal batteries) can be provided that contain such a cathode material.
Type:
Application
Filed:
June 16, 2011
Publication date:
December 29, 2011
Applicant:
EAGLEPICHER TECHNOLOGIES, LLC
Inventors:
Geoffrey SWIFT, Charles LAMB, Jim FERRARO
Abstract: An object of the present invention is to provide a positive electrode for a lithium secondary battery, which is capable of improving the initial coulomb efficiency of a lithium secondary battery, and the like. A positive electrode for a lithium secondary battery, which comprises lithium manganese iron phosphate and a lithium-nickel-manganese-cobalt composite oxide, is provided.
Abstract: A binder for a battery including polymethyl methacrylate particles and a binder polymer is disclosed. Additionally, a binder composition, and an anode and a lithium battery which include the binder are also disclosed.
Type:
Application
Filed:
February 19, 2014
Publication date:
August 21, 2014
Applicant:
SAMSUNG SDI CO., LTD.
Inventors:
Jun-Kyu Cha, Beom-Wook Lee, Bum-Jin Chang, Myoung-Sun Kim
Abstract: Provided is a composite cathode active material including layered lithium manganese oxide and lithium-containing metal oxide. Also, the present invention provides a secondary battery, a battery module, and a battery pack which have improved power characteristics by including the composite cathode active material.
Type:
Application
Filed:
April 17, 2013
Publication date:
September 5, 2013
Applicant:
LG CHEM, LTD.
Inventors:
Min Hee Lee, Jung Hwan Park, Ki Young Kwon
Abstract: A binder for a battery including polyurethane particles and a binder polymer is disclosed. Additionally, a binder composition, and an anode and a lithium battery which include the binder are also disclosed.
Type:
Application
Filed:
February 19, 2014
Publication date:
August 21, 2014
Applicant:
Samsung SDI Co., Ltd.
Inventors:
Jun-Kyu Cha, Beom-Wook Lee, Bum-Jin Chang, Myoung-Sun Kim
Abstract: Disclosed is a positive electrode composition for a lithium secondary battery and a secondary lithium battery using the same. The positive electrode composition for a lithium secondary battery includes a positive active material, a binder, and a compound represented by the following Chemical Formula 1. The above Chemical Formula 1 is the same as defined in the detailed description.
Abstract: A binder resin for an electrode of a nonaqueous electrolyte secondary battery is provided, which is used as the binder resin in a slurry composition for an electrode of a nonaqueous electrolyte secondary battery, containing a binder resin, an active material and an organic solvent.
Abstract: A rechargeable lithium battery includes a binder for a rechargeable lithium battery, and a positive active material composition. The binder for the rechargeable lithium battery includes a nitrile-based polymer nanoparticle and a fluorine-containing polymer nanoparticle.
Type:
Application
Filed:
September 8, 2010
Publication date:
June 16, 2011
Inventors:
Nam-Soon Choi, Man-Seok Han, Tae-Keun Kim, Jin-Kyu Hong, Sung-Soo Kim
Abstract: Disclosed is a method of preparing a negative electrode for a rechargeable lithium battery. The steps include vacuum-drying a negative electrode precursor, the negative electrode precursor comprising a negative active material and an aqueous binder. The steps may further include vacuum-drying a lithium cell battery that includes a vacuum-dried negative electrode.
Abstract: According to one embodiment, there are provided an active material for a battery having a high effective capacity, a nonaqueous electrolyte battery, and a battery pack. The active material contains a niobium-titanium composite oxide. When the active material is subjected to powder X-ray diffraction (XRD) using a Cu-K? ray source, a peak appears in a range of 2?=5°±0.5° in the diffraction pattern.