3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Samsung Sdi Co., Inc.

3m Innovation Properties Company

Leif Christensen

Mark N Obrovac

Sang-min Lee

Sung-Soo Kim

Sang-Min Lee

Gary J Drtina

Nam-Soon Choi

Goo-Jin Jeong

Yong-Mook Kang

Min-Seok Sung

William B Robbins

Dinh B Le

Rafael M Yasis

Richard E Volkmann

Phat Tan Pham

Walter L Harmer

Robert L Turner

Harvey J Helmin

Jerome Edward Scanlan

Laura M Aguilar

Anthony P Lindert

Jerome E Scanlan

A negative active material for rechargeable lithium batteries and a method of manufacturing the negative active material are provided. The negative active material for rechargeable lithium batteries includes at least one generally spherical assembly having flake-shaped materials that are capable of doping and dedoping lithium, and are arranged in a generally spherical shape defining a central pore. The negative active material imparts improved cycle-life characteristics.

Negative active material, method of preparing the same, and rechargeable lithium battery including the same

Positive electrode for lithium-ion electrochemical cells are provided that have capacity retentions of greater than about 95% after 50 charge-discharge cycles when comparing the capacity after cycle 52 with the capacity after cycle 2 when cycled between 2.5 V and 4.7 V vs. Li/Liat 30&#xb0; C. Compositions useful in the provided positive electrodes can have the formula, Li(NiMnCo)O, wherein 0.05&#x2266;x&#x2266;0.10, a+b+c=1, 0.6&#x2266;b/a&#x2266;1.1, c/(a+b)&#x3c;0.25, and a, b, and c are all greater than zero. The process of making these positive electrodes includes firing the compositions at 850&#xb0; C. to 925&#xb0; C.

High capacity positive electrodes for use in lithium-ion electrochemical cells and methods of making same

An embodiment of the present invention provides an electrode for a rechargeable lithium battery, including: a current collector; and an active material layer on the current collector, wherein the active material layer includes an active material adapted to reversibly intercalate and deintercalate lithium ions, a binder, and a pore-forming polymer.

Electrode for a rechargeable lithium battery, and a rechargeable lithium battery fabricated therefrom

Provided are electrode compositions for lithium-ion electrochemical cells that include novel binders. The novel binders include lithium polysalts of carboxylic and sulfonic acids, lithium salts of copolymers of acids, lithium polysulfonate fluoropolymers, a cured phenolic resin, cured glucose, and combinations thereof.

Electrodes including novel binders and methods of making and using the same

An electrode composition for a lithium ion battery that includes an amorphous alloy having the formula SiMAlwhere x, y, and z represent atomic percent values and (a) x+y+z=100, (b) x&#x2267;55, (c) y&#x3c;22, (d) z&#x3e;0, and (e) M is one or more metals selected from the group consisting of manganese, molybdenum, niobium, tungsten, tantalum, iron, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium, and combinations thereof.

Electrode compositions based on an amorphous alloy having a high silicon content

Alloy compositions, lithium ion batteries, and methods of making lithium ion batteries are described. The lithium ion batteries have anodes that contain an alloy composition that includes a) silicon, b) aluminum, c) transition metal, d) tin, e) indium, and f) a sixth element that contains yttrium, a lanthanide element, an actinide element, or a combination thereof. The alloy composition is a mixture of an amorphous phase that includes silicon and a crystalline phase that includes an intermetallic compound of 1) tin, 2) indium, and 3) the sixth element.

Alloy composition for lithium ion batteries

Alloy compositions, lithium ion batteries, and methods of making lithium ion batteries are described. The lithium ion batteries have anodes that contain an alloy composition that includes a) silicon, b) aluminum, c) transition metal, d) tin, and e) a fifth element that contains yttrium, a lanthanide element, an actinide element, or a combination thereof. The alloy composition is a mixture of an amorphous phase that includes silicon and a nanocrystalline phase that includes an intermetallic compound of tin and the fifth element.

Alloy compositions for lithium ion batteries

An electrode composition for a lithium-ion battery comprising particles having an average particle size ranging from 1 &#x3bc;m to 50 &#x3bc;m. The particles include an electrochemically active phase and an electrochemically inactive phase that share a common phase boundary. The electrochemically active phase includes elemental silicon and the electrochemically inactive phase includes at least two metal elements in the form of an intermetallic compound, a solid solution, or combination thereof. Each of the phases is free of crystallites that are greater than 1000 angstroms prior to cycling. In addition, the electrochemically active phase is amorphous after the electrode has been cycled through one full charge-discharge cycle in a lithium-ion battery.

Multi-phase, silicon-containing electrode for a lithium-ion battery

An anode composition that includes an elastomeric polymer binder, a plurality of electrochemically active metal particles dispersed in the binder, an electrically conductive diluent, and an adhesion promoter that promotes adhesion among the particles, the diluent, and the binder. Also featured are lithium ion batteries featuring anodes made from these compositions.

Anode compositions having an elastomeric binder and an adhesion promoter

A lithium ion battery that includes: (a) a cathode; (b) an anode in the form of a thin film which, when lithiated, does not exhibit sustained self-heating at temperatures up to about 100&deg; C.; and (c) an electrolyte separating the anode and the cathode. The battery has a capacity of at least 600 milliamp-hours, a specific energy of at least 100 watt-hours/kg, and a volumetric energy of at least 250 watt-hours/liter.

Lithium ion batteries with improved resistance to sustained self-heating

A metallic film is disclosed. The film has a layer of an organic polymer substrate having an sulfur-reactive surface, to which is adhered a vapor deposited metallic layer. Optionally, a metallic halide layer is formed on the metallic layer to provide depolarizing capacity for the metallic film. Methods of making and using the metallic film are disclosed. Biomedical electrodes, including radiolucent defibrillation electrodes, window films, optical reflectors, and flexible electronic circuits are articles which can use the metallic film as a component.

Method of forming a metallic film

Metallic films and articles using same

Polycyclic diamines, incorporating a basic framework similar to [3.3.3]propellane, and derivatives of the basic polycyclic diamines and a process for preparing same are provided. The diamines are prepared by subjecting bispyridine compounds to electroreductive coupling in an acidic solution. The polycyclic diamines and derivatives thereof are useful as chain extenders, crosslinking agents and curatives in various polymer systems.

Growing community of inventors

Saint Paul, MN, United States of America

Leif Christensen