Graphene used for electric storage device and electrical device and having high conductivity and ion transmittance

Abstract

The invention discloses graphene used for an electric storage device and an electrical device and having high conductivity and ion transmittance. The ring structure of the graphene is formed by carbon and nitrogen and the graphene is internally provided with pores through which ions can transmit. The graphene has conductivity, and the nitrogen concentration in the graphene is 1.0at.%-35at.%. The graphene contains nitrogen atoms and has a pore structure through which lithium and other ions can transmit. With application of the structure, the ions can be easily inserted into active substances or extracted out of the active substances, and decomposition of electrolyte on the surface of the active substance layer is not liable to occur so that the thickness of a surface film which is deposited on the surface of the active substance layer and suppresses inserting and separating of the ions can be lower and the charge and discharge characteristics of the electric storage device can be enhanced. With application of the graphene, lithium and other ions are enabled to pass through the electrical equipment of the electric storage device so that the electric storage device is enabled to have excellent charge and discharge characteristics and high reliability and bear long-term or repeated use.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a graphene with high conductivity and ion permeability that can be used for electrical storage devices and electrical devices. Background technique [0002] Energy and the environment are two major themes of human development today. Human beings urgently need a renewable, green and clean new energy storage device to face the increasing depletion of non-renewable resources and the aggravation of environmental pollution. As a new type of energy storage device that combines the advantages of traditional capacitors and secondary batteries, supercapacitors can provide higher energy density than traditional capacitors, as well as better power density and cycle life than secondary batteries, and are expected to be widely used in Energy conversion, aerospace systems, communication engineering and microelectronic devices and other fields. As we all know, the electrode material is the c...

AI Technical Summary

Problems solved by technology

Improve the inherent shortcomings of graphene electrodes (such as small capacitance, poor conductivity, short cycle life, and difficult morphology control)