Electrical Appliance
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsYasuhiko Takemura, Tamae MORIWAKA
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Abstract
An object is to increase the conductivity of an electrode including active material particles and the like, which is used for a battery. Two-dimensional carbon including 1 to 10 graphenes is used as a conduction auxiliary agent, instead of a conventionally used conduction auxiliary agent extending only one-dimensionally at most, such as graphite particles, acetylene black, or carbon fibers. A conduction auxiliary agent extending two-dimensionally has higher probability of being in contact with active material particles or other conduction auxiliary agents, so that the conductivity can be improved.
Claims17
(canceled)
A method for manufacturing an electrical appliance comprising:
- active material particles;
- a binder;
- and
- a conduction auxiliary agent comprising two-dimensional carbon;
- the method comprising:
- coating a solution comprising graphene oxide on a metal and drying the solution to form a first layer, wherein the first layer comprises the graphene oxide, and is directly in contact with the metal;
- and
- reducing the graphene oxide so as to obtain the two-dimensional carbon in the first layer.
A method for manufacturing an electrical appliance comprising:
- coating a solution comprising graphene oxide on a metal and drying the solution to form a first layer, wherein the first layer comprises the graphene oxide, and is directly in contact with the metal;
- and
- reducing the graphene oxide so as to make the first layer more conductive.
Dependencies are inferred from the claim text.