Graphene battery conductive agent

Abstract

The invention belongs to the technical field of graphene batteries, and particularly relates to a graphene battery conductive agent. The graphene battery conductive agent comprises the following raw materials in parts by mass: 5-15 parts of graphene, 6-15 parts of polyacrylonitrile fiber, 2-3 parts of triethylene tetramine, 60-80 parts of ethyl alcohol, 10-25 parts of acetone, 10-18 parts of butyrolactone, 1-5 parts of terbium oxide, 0.5-1 parts of titanium carbide and 5-8 parts of fluoroethylene carbonate. The graphene battery conductive agent can reduce the cost, can improve the dispersion of graphene, can improve the conductivity and the cycle life, and can improve the low-temperature performance.

Description

technical field [0001] The invention belongs to the technical field of graphene batteries, in particular to a conductive agent for graphene batteries. Background technique [0002] As a new type of high-energy secondary power supply, lithium-ion secondary batteries have the advantages of large specific energy, stable discharge voltage, high voltage, good low-temperature performance, no pollution, superior safety performance, long storage and working life, and high utilization rate. [0003] Lithium-ion batteries in the prior art mainly use conductive graphite, acetylene black and carbon nanotubes as conductive agents. Acetylene black is a chain composed of spherical amorphous carbon particles. It is currently the most widely used conductive agent with low price. , but in order to achieve the purpose of enhancing the mutual contact between electrode active materials, the amount of addition required is large, resulting in a decrease in electrode capacity; carbon nanotubes are ...

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion batteries in the prior art mainly use conductive graphite, acetylene black and carbon nanotubes as conductive agents. Acetylene black is a chain composed of spherical amorphous carbon particles. It is currently the most widely used conductive agent with low price. , but in order to achieve the purpose of enhancing the mutual contact between electrode active materials, the amount of addition required is large, resulting in a decrease in electrode capacity; carbon nanotubes are linear one-dimensional carbonaceous materials, compared with acetylene black, carbon Nanotubes have better electrical conductivity and less addition, but currently carbon nanotubes are expensive and have the disadvantage of being difficult to disperse when used as a conductive agent