Positive electrode for secondary battery, secondary battery, and method for fabricating positive electrode for secondary battery

摘要

A positive electrode for a secondary battery which enables both good battery characteristics and electrode strength at a predetermined level, a secondary battery, and a method for fabricating the positive electrode for a secondary battery are provided. The positive electrode for a secondary battery includes a current collector and an active material layer over the current collector. The active material layer includes an active material, graphene, and a binder. A carbon layer is on a surface of the active material. The proportion of the graphene in the active material layer is greater than or equal to 0.1 wt % and less than or equal to 1.0 wt %.

主权项

1. A positive electrode for a secondary battery comprising:
a current collector; and an active material layer over the current collector, wherein the active material layer comprises an active material, graphene, and a binder, wherein a carbon layer is in contact with a surface of the active material, wherein a proportion of the graphene in the active material layer is greater than or equal to 0.1 wt % and less than or equal to 1.0 wt %, and wherein a maximum value of discharge capacity (mAh/g) of the positive electrode is more than or equal to 140 mAh/g at a discharging rate of 1 C.