Abstract: A 12 volt automotive battery system includes a first battery directly coupled to an electrical system, in which the first battery includes a first battery chemistry, and a second battery coupled in parallel with the first battery and directly coupled to the electrical system, in which the second battery includes a second battery chemistry with a higher coulombic efficiency than the first battery chemistry. The first battery and the second battery are non-voltage matched such that a voltage range of the second battery is higher than a voltage range of the first battery. The first battery steers power generated during regenerative braking to the second battery using internal resistance of the first battery to enable the second battery to capture a majority of the power generated during regenerative braking, and the second battery provides power to the electrical system due to the higher voltage range of the second battery when the second battery has a positive state of charge.
Type:
Grant
Filed:
January 23, 2014
Date of Patent:
August 1, 2017
Assignee:
Johnson Controls Technology Company
Inventors:
Daniel B. Le, Perry M. Wyatt, Ryan S. Mascarenhas, Brian C. Sisk
Abstract: The present disclosure relates to a lithium ion battery cathode. The lithium ion battery cathode includes a plurality of cathode active material particles and a conductive carrier. The conductive carrier includes a plurality of carbon nanotubes. The plurality of carbon nanotubes are entangled with each other to form a net structure. The present disclosure also relates to a lithium ion battery.
Type:
Grant
Filed:
August 23, 2011
Date of Patent:
November 3, 2015
Assignees:
Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
Inventors:
Jia-Ping Wang, Shu Luo, Kai-Li Jiang, Shou-Shan Fan
Abstract: The present invention discloses an anode material for lithium secondary battery, comprising a particulate core composed of a metal or semimetal capable of forming a lithium alloy and a carbon layer covering the surface of the particulate core; a lithium secondary battery using said anode material; and a method for discharging of said secondary battery.
Abstract: The loss in delivered capacity (fade) after cycling non-aqueous rechargeable lithium batteries can be reduced by incorporating a cathode powder that has been mixed and heat-treated with a small amount of lithium borate. The invention is particularly suited to lithium ion batteries.
Abstract: An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating around electrode active material so that it can inhibit the reduction in battery capacity. In addition, the lithium secondary batteries are excellent in its charge-discharge characteristics, cycle life and thermal stability. A method for preparing the electrode active material for lithium secondary batteries is also provided.
Abstract: Negative active material compositions for rechargeable lithium batteries, negative electrodes for rechargeable lithium batteries, and rechargeable lithium batteries using the negative active material compositions are provided. The negative active material composition includes a negative active material, a polyimide precursor compound, and a highly flexible polymer. The negative active material composition prevents the electrode substrate from bending, thereby improving the capacity and cycle-life characteristics of the battery.
Type:
Grant
Filed:
November 27, 2007
Date of Patent:
April 3, 2012
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Nam-Soon Choi, Sung-Soo Kim, Goo-Jin Jeong
Abstract: Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes a silicon-containing compound represented by the following Chemical Formula 1. SiCx ??[Chemical Formula 1] wherein, 0.05?x?1.5; wherein the compound is substantially amorphous.
Type:
Application
Filed:
May 31, 2011
Publication date:
March 22, 2012
Applicant:
Samsung SDI Co., Ltd.
Inventors:
Sumihito ISHIDA, Jong-Ki Lee, Kyeu-Yoon Sheem, Mee-Young Lee
Abstract: In an aspect, a positive active material for a rechargeable lithium battery that includes a lithium composite oxide including a Fe-containing compound phase and a Li-containing compound phase, a method of preparing the same, and a rechargeable lithium battery including the same are provided.
Type:
Grant
Filed:
April 18, 2013
Date of Patent:
November 8, 2016
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Ji-Hyun Kim, Yong-Chan You, Han-Eol Park
Abstract: An electrode for a rechargeable battery and a rechargeable battery, the electrode including a current collector; an electrode active material layer; and an electrolyte solution impregnation layer, wherein the electrolyte solution impregnation layer includes a metal oxide and a conductive material.
Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3− as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.
Type:
Grant
Filed:
April 23, 1999
Date of Patent:
May 21, 2002
Assignee:
The University of Texas Systems
Inventors:
John B. Goodenough, Akshaya K. Pahdi, K. S. Nanjundaswamy, Christian Masquelier
Abstract: The present invention is directed to lithium-ion batteries in general and more particularly to lithium-ion batteries based on aligned graphene ribbon anodes, V2O5 graphene ribbon composite cathodes, and ionic liquid electrolytes. The lithium-ion batteries have excellent performance metrics of cell voltages, energy densities, and power densities.
Abstract: An anode active material for a lithium rechargeable battery, the anode active material including: a base material which is alloyable with lithium and a metal nitride disposed on the base material.
Abstract: A battery includes an anode having a lithium alloy as the active material, a cathode having, for example, iron disulfide as the active material, and an electrolyte containing a sulfolane and 1,2-dimethoxyethane.
Type:
Application
Filed:
July 27, 2006
Publication date:
January 31, 2008
Inventors:
William L. Bowden, Todd E. Bofinger, David Leigh DeMuth, Rimma A. Sirotina
Abstract: A method of forming battery electrodes with high specific surface and thin layers of active material is disclosed. The method enables low series resistance and high battery power.
Type:
Grant
Filed:
August 9, 2007
Date of Patent:
October 19, 2010
Inventors:
Donald L. McGervey, Paul T. Szozdowski, Gerhard E. Welsch
Abstract: Provided is a lithium battery in which the cathode comprises an electroactive sulfur-containing material and the electrolyte comprises a lithium salt, a non-aqueous solvent, and one or more capacity-enhancing reactive components. Suitable reactive components include electron transfer mediators. Also are provided methods for making the lithium battery.
Type:
Application
Filed:
March 17, 2003
Publication date:
September 25, 2003
Applicant:
Moltech Corporation, Inc.
Inventors:
Yuriy V. Mikhaylik, Terje A. Skotheim, Boris A. Trofimov
Abstract: A battery cell including: an anode configured to operate as a source of cations during discharge of the battery cell; and an electrolyte configured to transport the cations from the anode to the a cathode during discharge of the battery cell, wherein the cathode includes material that is configured to enable the reversible insertion of transported cations during discharge of the battery cell and that has optical properties that are dependent upon cation insertion and that is viewable by a user.
Type:
Grant
Filed:
November 3, 2009
Date of Patent:
November 13, 2012
Assignee:
Nokia Corporation
Inventors:
Di Wei, Zoran Radivojevic, Chris Bower, Piers Andrew, Teuvo Tapani Ryhänen
Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3? as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.
Type:
Grant
Filed:
October 4, 2012
Date of Patent:
July 22, 2014
Assignee:
Hydro-Quebec
Inventors:
Michel Armand, John B. Goodenough, Akshaya K. Padhi, Kirakodu S. Nanjundaswamy, Christian Masquelier
Abstract: A battery-dedicated electrode foil (32) includes an aluminum electrode foil (33) in which metal aluminum is exposed, and corrosion-resistant layers (34A, 34B) that are formed on surfaces (33a, 33b) of the aluminum electrode foil, and that are in direct contact with the metal aluminum that forms the aluminum electrode foil, and that is made of tungsten carbide.