Granular silicon dioxide electrolyte and storage battery

Abstract

The invention relates to granular silicon dioxide electrolyte and a storage battery. The granular silicon dioxide electrolyte comprises the following raw materials by weight percent: 3.0 to 5.0 percent of SiO2, 1.2 to 1.8 percent of Na2SO4, 42 to 45 percent of H2SO4, 0.08 to 0.12 percent of SnSO4, 0.1 to 0.3 percent of fluorine-containing resin, 0.5 to 1.2 percent of methyl polyethylene glycol, 0.08 to 0.12 percent of carboxymethylcellulose and 46 to 53 percent of self-made pure water. Compared with the prior art, the electrolyte is formed by compounding SiO2 particles in different particle size ranges and a 1.35g / mL sulfuric acid aqueous solution, so that the thermal runaway phenomenon of the battery can be effectively prevented, and the capacity for absorbing foreign ions in the electrolyte is relatively good; current distribution on the surface of an electrode is uniform; by adopting a thin polar plate technology, the quantity of positive and negative polar plates is increased, the thickness of the negative polar plate on the outermost side is reduced, the utilization rate of battery active substances is increased, the tight assembling of the battery is realized, and the softening and dropping of positive polar plate active substances can be slowed down.

Description

technical field [0001] The invention relates to the field of battery electrolytes, in particular to a granular silicon dioxide electrolyte and a storage battery. Background technique [0002] At present, the lead-acid batteries produced in China mainly use lead-aluminum and lead-antimony alloys as the main materials. The electrolyte in the batteries is sulfuric acid configuration. , It can only be used after mixing and stirring. It does not completely integrate silicon, water, acid and other compounds. Some defects: (1) The temperature rise of the electrolyte inside the battery is relatively large, and the battery is prone to thermal runaway; (2) The electrolyte distribution of the battery is uneven, resulting in uneven current distribution and affecting the service life of the battery; (3) The battery The utilization rate of the active material is low, and the positive electrode active material is easy to soften and fall off. [0003] In order to solve the above problems,...

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Problems solved by technology

[0002] At present, the lead-acid batteries produced in China mainly use lead-aluminum and lead-antimony alloys as the main materials. The electrolyte in the batteries is sulfuric acid configuration. , Only after mixing and stirring, it can be used without complete fusion of silicon, water, acid and other compounds. The low temperature effect on the battery can only be better than that of ordinary lead-acid. It can be seen that the electric vehicle batteries currently on the market will have the following Some defects: (1) The temperature rise of the electrolyte inside the battery is relatively large, and the battery is prone to thermal runaway; (2) The electrolyte distribution of the battery is uneven, resulting in uneven current distribution and affecting the service life of the battery; (3) The battery The utilization rate of the active material is low, and the positive active material is easy to soften and fall off

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