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3.5-二氨基苯甲酸对铅酸蓄电池
电化学性能影响的研究刘玉,陈清元,邓成智,刘清平,郭少银
(天能集团,浙江长兴313100)
摘要:本文选用3,5-二氢基苯甲酸和氧化铋作为电解液添加剂,实验发现在电解液中添加600 ~5.28×10-~6.16×10"mol/L浓度的3,5-二氢基苯甲酸能够减少Pb(II)膜的生长,从而减缓电池出现早期容量损失;同时在电解液中添加0.16×10-3~0.22×10-3m0l/L浓度的钛离子能够提高
合金的析氮过电位,减少电池在循环过程中的失水量,延长了电池的使用寿命。关键词:3,5-二氢基苯甲酸;氧化钛;电解液;添加剂
中图分类号:TM912.1
文献标识码:B文章编号:1006-0847(2014)02-72-03
Researchontheinfluenceof3,5-diaminobenzoicacidon
electrochemicalperformanceoflead-acidbatteries LIU Yu, CHEN Qing-yuan, DENG Cheng-zhi, LIU Qing-ping, GUO Shao-yin
(TiannengGroup,ChangxingZhejiang313100,China)
Abstract: In this paper, 3,5-diaminobenzoic acid and bismuth oxide as additives of electrolyte are studied. The results show that 5.28×10*~6.16x10 mol/L 3,5-diaminabenzoic acid added into the electrolyte can inhibit.the growth of Pb (ll) corroded film. This is an effective approach to solve the PCL problem.We also find that 0.16x10-°~0.22×10*° mol/Lbismuth oxide added into the electrolyte can increase hydrogen over-potential and reduce the water loss in the process of cycle life, which lengthens the life of batteries.
Key words: 3,5-diaminobenzoic acid; bismuth oxide; electrolyte; additive
0前言
铅钙合金体系在深循环使用过程中容易出现早期容量损失.(PCL-1),这主要是因为在板栅与活性物质腐蚀界面析出钙而形成了碱性环境,容易使
收稿日期:2013-10-21 72
钝化层α-PbO的生成,这种高阻抗的物质容易使板栅与活性物质出现导电性不良。本文选用3,5-二氨基苯甲酸和氧化铋作为电解液添加剂,从电化学性能角度,研究了其对钝化层生长以及成品电池
循环过程中失水量的影响。 1实验
1.1主要试剂
3,5-二氨基苯甲酸,分析纯;氧化铋,分析