Alkaline manganese cell anode additive and addition method thereof

碱锰电池正极添加剂及其添加方法

Abstract

本发明公开了一种碱锰电池正极添加剂,所述正极添加剂主要为硫酸钡和氢氧化钡的混合物,所述硫酸钡的添加量占正极重量的0.5%~7%,所述氢氧化钡的添加量占正极重量的0.5%~1.8%;所述硫酸钡形状为粉状,纯度大于99.9%,粒度为100%通过325目筛网;所述氢氧化钡形状为粉状,纯度大于99.9%,粒度为100%通过325目筛网。该正极添加剂的添加方法为,通过把粉状的硫酸钡与氢氧化钡的添加剂,直接与其它正极活性材料按一定配比均匀搅拌混合。本发明通过将定量比例的粉状硫酸钡和氢氧化钡作为添加剂与活性材料机械搅拌混合,然后与40%浓度的氢氧化钾的电解液混合,制备出的碱锰电池正极,较之以前的以硫酸钡或氢氧化钡单独作为添加剂制备出的电池,电池工作时间更长。
The invention discloses an alkaline manganese cell anode additive and an addition method thereof. The anode additive is a mixture of mainly barium sulfate and barium hydroxide; the barium sulfate addition accounts for 0.5-7wt% of an anode, and the barium hydroxide addition accounts for 0.5-1.8wt% of the anode; the barium sulfate is a powder with a purity greater than 99.9% and a granularity of 100% passing through a 325 mesh screen, and the barium hydroxide is a powder with a purity greater than 99.9% and a granularity of 100% passing through a 325 mesh screen. The addition method of the anode additive is as below: directly mixing well the barium sulfate powder and the barium hydroxide powder additive with other anode active materials according to a certain ratio. According to the invention, barium sulfate powder and the barium hydroxide powder in a certain ratio are used as an additive to be mixed with active materials by mechanical stirring, and are mixed with potassium hydroxide electrolyte with a concentration of 40%. The prepared alkaline manganese cell has a longer working time compared with a prior cell prepared by using barium sulfate or barium hydroxide individually as an additive.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103078117-AMay 01, 2013中银(宁波)电池有限公司Positive electrode additive of alkaline battery
    CN-103078117-BMay 18, 2016中银(宁波)电池有限公司碱性电池正极添加剂