Method of manufacturing positive electrode for non-aqueous electrolyte battery, slurry used therefor, and non-aqueous electrolyte battery
AssigneeSanyo Electric Co., Ltd.
InventorsNaoki Imachi, Nobuhiro Sakitani, Masaaki Tanaka
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Abstract
A method of manufacturing a positive electrode for a non-aqueous electrolyte battery is provided. The positive electrode has a current collector and an active material layer formed on the current collector. The method includes: coating a slurry onto the current collector, the slurry having a pH of from 5 to 9 and containing a positive electrode active material, water as a dispersion medium, carboxymethylcellulose, and a pH adjuster; and drying the coated slurry to form the active material layer.
Claims8
A method of manufacturing a positive electrode for a non-aqueous electrolyte battery, the positive electrode having a current collector and an active material layer formed on the current collector, the method comprising:
- coating a slurry onto the current collector, the slurry having a pH of from 5 to 9 and comprising a positive electrode active material selected from the group consisting of a lithium-containing cobalt oxide, a lithium-containing nickel oxide, and an olivine-type, lithium phosphate compound, water as a dispersion medium, carboxymethylcellulose, and a pH adjuster which is a water-soluble organic acid selected from the group consisting of succinic acid, phthalic acid, maleic acid, succinic anhydride, phthalic anhydride, maleic anhydride;
- organic compounds having a phosphate group, and organic compounds having a sulfonate group;
- and
- drying the coated slurry to form the active material layer.
A method of manufacturing a positive electrode for a non-aqueous electrolyte battery, the positive electrode having a current collector and an active material layer formed on the current collector, the method comprising:
- coating a slurry onto the current collector, the slurry having a pH of from 7 to 9 and comprising a positive electrode active material selected from the group consisting of a lithium-containing cobalt oxide, a lithium-containing nickel oxide, and an olivine-type lithium phosphate compound, water as a dispersion medium, carboxymethylcellulose, and a pH adjuster which is a water-soluble organic acid selected from the group consisting of succinic acid, phthalic acid, maleic acid, succinic anhydride, phthalic anhydride, maleic anhydride;
- organic compounds having a phosphate group, and organic compounds having a sulfonate group;
- and
- drying the coated slurry to form the active material layer.
A slurry for manufacturing a positive electrode for a non-aqueous electrolyte battery, comprising:
- a positive electrode active material selected from the group consisting of a lithium-containing cobalt oxide, a lithium-containing nickel oxide, and an olivine-type lithium phosphate compound, water as a dispersion medium, carboxymethylcellulose, and a pH adjuster which is a water-soluble organic acid selected from the group consisting of succinic acid, phthalic acid, maleic acid, succinic anhydride, phthalic anhydride, maleic anhydride;
- organic compounds having a phosphate group, and organic compounds having a sulfonate group;
- and
- the slurry having a pH of from 5 to 9.
Dependencies are inferred from the claim text.