GRAPHENE, GRAPHENE-INCLUDING LAYER, ELECTRODE, AND POWER STORAGE DEVICE

摘要

Graphene that is formed from graphene oxide and has high conductivity and a method for forming the graphene are provided. A power storage device with high charge discharge capacity and favorable electric properties such as high reliability and high durability and a method for fabricating the power storage device are provided. Chemical reduction and thermal reduction are performed on graphene oxide in this order to form graphene. In the method for fabricating the power storage device including at least a positive electrode, a negative electrode, an electrolytic solution, and a separator, graphene of one or both of a positive electrode and a negative electrode is formed by the forming method of graphene.

主权项

1. Graphene comprising:
carbon atoms whose proportion measured by X-ray photoelectron spectroscopy is greater than or equal to 90 at. % and less than 98 at. %; and oxygen atoms whose proportion measured by X-ray photoelectron spectroscopy is greater than or equal to 2 at. % and less than 10 at. %, wherein a proportion of sp2-bonded carbon atoms of the carbon atoms measured by X-ray photoelectron spectroscopy is greater than or equal to 50% and less than or equal to 80%.