Method for manufacturing storage battery electrode, storage battery electrode, storage battery, and electronic device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorMikio Yukawa
Life of this patent
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Abstract
To provide a method for forming a storage battery electrode including an active material layer with high density in which the proportion of conductive additive is low and the proportion of the active material is high. To provide a storage battery having a higher capacity per unit volume of an electrode with the use of a storage battery electrode formed by the formation method. A method for forming a storage battery electrode includes the steps of forming a mixture including an active material, graphene oxide, and a binder; providing a mixture over a current collector; and immersing the mixture provided over the current collector in a polar solvent containing a reducer, so that the graphene oxide is reduced.
Claims27
A method for manufacturing a storage battery electrode, comprising the steps of:
- forming a mixture comprising an active material, graphene oxide, and a binder;
- providing the mixture over a current collector;
- drying the mixture to form an active material layer over the current collector;
- consolidating the active material layer by a compression method;
- and
- reducing the graphene oxide to form a graphene over the current collector in a polar solvent comprising a reducer after the step of consolidating the active material layer.
A method for manufacturing a storage battery electrode, comprising the steps of:
- forming a mixture comprising an active material, graphene oxide, and a binder;
- providing the mixture over a current collector;
- drying the mixture to form an active material layer over the current collector;
- consolidating the active material layer by a compression method;
- and
- reducing the graphene oxide to form a graphene over the current collector by immersing the active material layer in a polar solvent comprising a reducer after the step of consolidating the active material layer.
A method for manufacturing a storage battery electrode, comprising the steps of:
- forming a mixture comprising an active material, graphene oxide, and a binder;
- providing the mixture over a current collector;
- drying the mixture to form an active material layer over the current collector;
- consolidating the active material layer by a roll press method or a flat plate press method;
- and
- reducing the graphene oxide to form a graphene over the current collector by immersing the active material layer in a polar solvent comprising a reducer after the step of consolidating the active material layer.
Dependencies are inferred from the claim text.