Motorola Corporation

Other

University of California

Hughes Aircraft Company

The Texas A&m University System

Assoicated Universties, Inc.

Anaba A Anani

Jinshan Zhang

Ganesh Venugopal

Vernon Meadows

Zhenhua Mao

Han Wu

Jason N Howard

Changming Li

Jose M Fernandez

Ke Keryn Lian

George Thomas

Hossein Maleki

Frank Russell Denton, Iii

Veronica R Reichert

Guoping Deng

Lijun Bai

Hong S Lim

Robert Alan Huggins

Edmond Louie

Simon Thomas

Gerald W Blanton

Kenneth M Massaroni

Keryn Ke Lian

Supramaniam Srinivasan

Inna Kerzhner-Haller

John Moore

Inna Kerzhner-Hal

Frank P Malaspina

John Johnson

James Reilly

Ricardo Schwarz

Jose&prime; Maria Fernandez

Dong Chen

A battery for use in various temperature environments includes a plurality of cells arranged in a close packing arrangement and a sleeve that is disposed around the cells. The sleeve is constructed from a material that acts as an insulator at relatively low temperatures and that acts as a conductor at relatively high temperatures.

System for enhanced lithium-ion battery performance at low temperatures

An improved lithium-ion or lithium-polymer battery that is capacity-fade resistant. The battery includes an anode comprised of graphite where density of the graphite is in a range from 1.2 to 1.5 g/c3; and the battery further has a cathode that is comprised of LiNiO2 present at a density in a range from 3.0 to 3.3 g/c3. The battery also includes an electrolyte and a separator between the anode and cathode, and the separator is coated with PVDF such that the anode, cathode, and separator are held together to form the electricity-producing battery. The ratio by weight of LiNiO2 to graphite present in the battery is preferably no greater than 2.0 to 1.

Lithium-ion battery

A lithium-ion battery having at least an anode that includes phenol formaldehyde in a range of 0.1% to 10% by weight as a binder material. The phenol formaldehyde, or a mixture of phenol formaldehyde with polyvinylidene fluoride (PVDF), is used as a binding material in a Li-ion battery negative electrode to decrease the exothermic reaction of the battery during charging and discharging, which accordingly lessens the risk of thermal runaway and rupture of the battery.

Lithium-ion battery electrode composition

Structures (,) of electrochemical cells and electrochemical cell components employ a switch-like article (,) comprised of an electrically conducting material that becomes nonconductive or semiconductive outside of a discrete voltage window. Said switch-like article serves as a reversible, self-regulating electrochemical switch at boundary voltages, thereby protecting the cell against over-charge and or over-discharge, and can be employed in a variety of configurations to provide self-regulating cell architectures. Cell assemblies that include said switch-like articles may themselves serve an auxiliary function as switches for other cells placed in series or parallel, and for external circuits.

Self-switching electrochemical cells and method of making same

A hybrid energy storage device (10) including first, second, and third electrodes (20, 25, 30), a first electrolyte (35) disposed between the first and second electrodes (20, 25), and a second electrolyte (40) disposed between the second and third electrode (25, 30). The first electrode (25), the first electrolyte (35), and the second electrode (25) form a battery, and the second electrode (25), the second electrolyte (40), and the third electrode (30) form a capacitor. The first and third electrodes (20, 30) are directly connected together so that the battery and capacitor are in parallel within the hybrid energy storage device (10).

Hybrid energy storage device

A method (50) of fabricating a carbon material for use as an electrode in an electrochemical cell (10) includes the steps of carbonizing (62, 66) a lignin material to result in the carbon material and subsequently washing (74) the carbon material with acid.

Carbon electrode material for electrochemical cells and method of making

An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second or gelling layer 30 being used to absorb an electrolyte active species.

Multi-layered polymeric gel electrolyte and electrochemical cell using

An electrochemical cell (10) includes first and second electrodes (12) and (14) with an electrolyte system (26) disposed therebetween. The electrolyte system is fabricated of a blend of differing grades of a single polymer. One grade may be provided to, for example, absorb an electrolyte active species, while the second grade may be provided to enhance mechanical integrity of the system.

Polymer blend electrolyte system and electrochemical cell using same

A hybrid electrode for a high power, high energy, electrical storage device contains both a high-energy electrode material (42) and a high-rate electrode material (44). The two materials are deposited on a current collector (40), and the electrode is used to make an energy storage device that exhibits both the high-rate capability of a capacitor and the high energy capability of a battery. The two materials can be co-deposited on the current collector in a variety of ways, either in superimposed layers, adjacent layers, intermixed with each other or one material coating the other to form a mixture that is then deposited on the current collector.

High power, high energy, hybrid electrode and electrical energy storage

An electrochemical cell 22 comprises first and second electrode assemblies 10 and 24. Disposed between the electrode assemblies 10 and 24 is a layer of an electrolyte material 32. The electrode assemblies are adhered to the electrolyte layer by means of a adhesive layers 20 and 30 disposed between layers of electrode material 12 and 26 and the layer of electrolyte active material. The layer of adhesive material may be made of any of a number of materials, examples of which include polymers, epoxies, resins, and combinations thereof.

Electrochemical cell and method of making same

Electrodes for electrochemical capacitor are modified with a metal macrocyclic complex made up of phthalocyanine or porphyrin ligands bound to a transition metal to achieve improved conductivity, reversibility, and charge storage capacity. The electrode is formed from a metal base and coated with an oxide, nitride or carbide of a transition metal or with a conductive polymer. This coating is modified with the metal macrocyclic complex. Suitable metal macrocyclic complexes are iron phthalocyanine (FePc), iron meso-tetra(N-methyl-4-phenyl)porphyrin (FeTPP) or cobalt protoporphyrin (CoPP).

Macrocyclic complex modified electrodes and capacitors made therefrom

A method for preparing an amorphous carbon material for use as an electrode, such as the anode of an electrochemical cell. The amorphous carbon is fabricated in a one heating step process from multi-functional organic monomers. Electrodes so fabricated may be incorporated into electrochemical cells (10) as the anode (20) thereof.

Carbon electrode materials for electrochemical cells and method of

A method for preparing a carbon material for use as an electrode, such as the anode (30) of an electrochemical cell (10). The carbon is fabricated in a heating process from a plurality multifunctional organic monomers selected from first and second groups of monomers. Electrodes so fabricated may be incorporated into electrochemical cells (10) as the anode (20) thereof.

Electrode materials for electrochemical cells and method of making same

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Lawrenceville, GA, United States of America

Anaba A Anani