Graphene conductive agent

Abstract

The invention discloses a graphene conductive agent. The internal composition components of the graphene conductive agent include, by mass, 17-22 parts of graphene, 6-9 parts of polyacrylonitrile fibers, 2-5 parts of triethylenetetraamine, 4-6 parts of activated carbon, 120-150 parts of an adhesive solvent, 2-4 parts of rare earth oxide and 0.75-1 part of titanium carbide. The graphene conductiveagent using the excellent conductivity of the graphene improves the capacity of an electrode material, reduces the internal resistance of a battery, prolongs the cycle life of the battery and saves the cost, so the lithium ion battery is competitive, and has strong electron conduction ability and uniform heat conduction, and the graphene conductive agent has strong liquid absorbing and preservingability when doped into the lithium ion battery.

Description

technical field [0001] The invention relates to the technical field related to graphene, in particular to a graphene conductive agent. 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 linear one-dimen...

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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

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