Graphene lead-carbon battery negative electrode plaster board and preparation method thereof

Abstract

The invention discloses a graphene lead-carbon battery negative electrode plaster board. The raw materials include: 0.3-0.5% of graphene, 6-10% of lignin, 0.55-0.65% of crude wood fiber, and 0.2% of polyester fiber in terms of mass percentage. ~0.6%, water-based acrylic resin 1~6%, curing agent 0.1~0.6%, carbon nanotubes and carboxylated double-walled carbon nanotubes 0.11~0.14%, diindium trioxide 0.01~0.03%, dispersant 0.2~1% , 10% to 15% of water, and the rest are sponge lead, and the sum of the mass percentages of all raw materials is 100%; the graphene is graphene nano-chips. The graphene lead-carbon battery negative electrode plaster board of the present invention has strong charging acceptance ability; the service life is long; and the graphene lead-carbon battery negative electrode plaster board of the present invention is simple to prepare, does not need high-temperature casting, etc., consumes less energy, and has higher production efficiency High, low comprehensive cost, and has broad market application prospects.

Description

technical field [0001] The invention relates to the field of electrochemical power sources, in particular to a graphene lead-carbon battery negative electrode plaster board and a preparation method thereof. Background technique [0002] As one of the main energy storage technologies, energy storage batteries need to have high power output and good charge acceptance under partial state of charge. Carbon materials are favored by various energy storage batteries due to their rich pore structure, high specific surface area, high electrical conductivity and good chemical stability. Lead-carbon battery is a kind of lead-acid battery that uses carbon materials as negative electrode additives. It has a long cycle life under the condition of partial state of charge high-rate charge and discharge (HRPSoC), and has shown great promise in energy storage and hybrid vehicles. A good application prospect. [0003] In recent years, research and development of lead-carbon batteries have be...

AI Technical Summary

Problems solved by technology

[0006] 1. When charging, the negative plate of the battery will experience obvious volume expansion, cracks and salinization of the negative plate of the battery, which will cause irreversible damage to the negative plate of the battery and shorten the service life;

[0007] 2. Especially in the process of fast charging (high power), the negative electrode grid of the battery will experience greater volume expansion, cracks and salinization of the negative electrode plate of the battery, which will cause irreversible damage to the negative electrode plate of the battery, and the charge acceptance capacity will be lower. low, short service life

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