Union Carbide Corporation

Eveready Battery Company, Inc.

Basvah LLC

Pellion Technologies, Inc.

George E Blomgren

Steven D Jones

Dania Ghantous

On Kok Chang

Violeta Z Leger

Marvin L Kronenberg

Ou Mao

John C Bailey

Robert Ellis Doe

Gerald H Newman

Mark D Vandayburg

Kristin Aslaug Persson

Demetrios V Louzos

Peter Hallac

Syed Aziz

Positive electrodes for secondary batteries formed with a plurality of substantially aligned flakes within a coating. The flakes can be formed from metal oxide materials and have a number average longest dimension of greater than 60 &#x3bc;m. A variety of metal oxide or metal phosphate materials may be selected such as a group consisting of LiCoO, LiMnO, Li(M1M2Co)Owhere M1 and M2 are selected from among Li, Ni, Mn, Cr, Ti, Mg, or Al, 0&#x2266;x1&#x2266;0.5 and 0&#x2266;x2&#x2266;0.5, or alternatively, LiM1MnOwhere 0&#x3c;x&#x3c;0.8 and M1 represents one or more metal elements. Methods for making positive electrode materials are also provided involving the formation of structures with a desired longest dimension, preferably polycrystalline flakes. A cathode coating containing polycrystalline flakes may be deposited onto a conductive substrate and pressed to a desired final electrode thickness.

Lithium secondary batteries with positive electrode compositions and their methods of manufacturing

A magnesium battery electrode assembly is described, including a current collector comprising a carbonaceous material and an electrode layer comprising an electrode active material disposed on the current collector.

Rechargeable magnesium ion cell components and assembly

Systems and methods for configuring tabs on a rechargeable battery may include a current collector comprising one or more collector foil and one or more tabs connected to the collector foil for conveying generated current from the current collector. The tabs may be configured to extract greater capacity from the battery electrodes so that the resulting battery may exhibit higher performance. The tabs may be configured so that the length of the tab is greater than the height of the collector foil so the tab may cover the height of the collector foil and may protrude from the foil.

Systems and methods for rechargeable battery collector tab configurations and foil thickness

A water-soluble binder useful for preparing an electrode for either primary or secondary batteries, having either aqueous or non-aqueous electrolyte, contains polyacrylamide and at least one copolymer selected from carboxylated styrene-butadiene copolymer and styrene-acrylate copolymer. The water-dispersible binder eliminates or reduces the need for organic solvents during preparation of an electrode made of a particulate active electrode material. The binder exhibits good chemical resistance, adhesive properties, flexibility and resilience, making it well suited for use in preparing batteries having a spirally wound electrode assembly.

Latex binder for non-aqueous battery electrodes

Cathode collectors are made in a substantially dry method from carbon fibrils that have a fiber diameter of from about 2 to about 200 nanometers, a fiber length to diameter ratio of from about 10 to about 500, with a maximum length of 1 millimeter, and a fiber surface area of from about 10 to about 500 m.sup.2 /g, and a binder.

Cathode collector made from carbon fibrils

Low temperature molten compositions are comprised of a mixture of an inorganic halide salt such as aluminium trichloride, and a quaternary alkyl phosphonium halide salt, such as tetramethylphosphonium chloride, and are useful as electrolytes in electrochemical cells.

Low temperature molten compositions comprised of quaternary alkyl

Low temperature molten compositions are comprised of a mixture of a metal halide, such as aluminum trichloride, and a ternary alkyl sulfonium salt, such as trimethylsulfonium chloride, and are useful as electrolytes in electrochemical cells.

Low temperature molten composition comprised of ternary alkyl sulfonium

An electrolyte for nonaqueous cells containing a solvent comprising at least one diether containing the sequence O.sub.1 C.sub.1 C.sub.2 O.sub.2 wherein two or three contiguous atoms are part of a five-, six- or seven-member ring system having as the remaining ring atoms carbon, or carbon and hetero atoms, with a methyl group bonded to an oxygen atom O.sub.1 and/or O.sub.2 when said oxygen atom is not included in the ring structure.

Organic electrolyte for nonaqueous cells

Low temperature molten compositions comprised of a mixture of a metal halide, such as aluminum trichloride, and a hydrocarbyl-saturated onium salt, such as trimethylphenylammonium chloride, are useful as electrolytes in electrochemical cells.

Low temperature molten compositions

The invention relates to the use in a non-aqueous electrochemical cell of a conductive electrolyte comprising an ionizing solute dissolved in a mixture of a selected halide of an element of Group IV to Group VI of the Periodic Table and a cosolvent. The selected halide serves the dual function of acting as a solvent for the solute and as the active cathode depolarizer of the cell.

Non-aqueous electrochemical cell

The invention relates to the use in a non-aqueous electrochemical cell of an electrolyte comprising a solute dissolved in a solvent which is an oxyhalide of an element of Group V or Group VI of the Periodic Table. The oxyhalide solvent serves the dual function of acting as the solvent for the electrolyte salt and as the active cathode depolarizer of the cell.

A nonaqueous cell employing an anode such as lithium, a liquid electrolyte based on organic solvents and a cathode of antimony trisulfide.

Nonaqueous cell having an antimony trisulfide cathode

A non-aqueous electrochemical cell employing a liquid cathode comprising an organo halide of at least one element selected from Group IVA and Group VA of the Periodic Table and having an atomic number of 14 or more.

Non-aqueous cell

A non-aqueous electrochemical cell employing a liquid cathode which comprises an halogenocarbonylchalcogenyl halide.

A nonaqueous cell employing an anode of aluminum, magnesium, calcium or their alloys in which at least the surface of the anode is amalgamated, a solid cathode and an electrolyte comprising a salt such as lithium or ammonium salt dissolved in an aprotic alkylated amide solvent.

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Lakewood, OH, United States of America

George E Blomgren