Secondary battery
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorKiyofumi OGINO
Life of this patent
Estimating the term…
Abstract
A secondary battery which can achieve battery performance satisfactorily in a low temperature environment in cold climates or the like is provided. Further, a secondary battery having high capacity even in a low temperature environment in cold climates or the like is provided. A secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution which contains a nonaqueous solvent and an electrolyte. The negative electrode includes a negative electrode active material layer. The negative electrode active material layer contains graphene, a binder, and a negative electrode active material containing a particulate alloy-based material. The nonaqueous solvent contains propylene carbonate and the electrolyte contains lithium perchlorate.
Claims13
A secondary battery comprising:
- a positive electrode,
- a negative electrode comprising an active material layer, the active material layer comprising:
- graphene;
- a binder;
- and
- an active material comprising a plurality of particles, and
- an electrolyte solution, the electrolyte solution comprising:
- propylene carbonate;
- and
- lithium perchlorate,
- wherein the plurality of particles contain an alloy-based material.
A secondary battery comprising:
- a positive electrode,
- a negative electrode comprising an active material layer, the active material layer comprising:
- graphene;
- a binder;
- and
- an active material comprising a plurality of particles, and
- an electrolyte solution, the electrolyte solution comprising:
- propylene carbonate;
- and
- lithium perchlorate,
- wherein the plurality of particles contain silicon.
A secondary battery comprising:
- a positive electrode,
- a negative electrode comprising an active material layer, the active material layer comprising:
- graphene;
- a binder;
- and
- an active material comprising a plurality of particles, and
- an electrolyte solution, the electrolyte solution comprising:
- propylene carbonate;
- and
- lithium perchlorate,
- wherein the plurality of particles contain silicon, and
- wherein the binder contains polyimide.
Dependencies are inferred from the claim text.