| 碱性电解液中几种铁化合物的溶出及危害 |
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| 引用本文： | 金辉杰,李伟善,邱仕洲.碱性电解液中几种铁化合物的溶出及危害[J].电池工业,2006,11(6):380-383. |
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| 作者姓名： | 金辉杰 李伟善 邱仕洲 |
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| 作者单位： | 华南师范大学化学系,广东,广州,510631;广州虎头电池集团有限公司,广东,广州,510253 |
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| 摘 要： | 研究了Fe3O4,FeSO4和Fe2(SO4)3在9mol/LKOH溶液中的溶出行为以及溶出铁对锌腐蚀的影响。通过定性分析和析氢实验,发现Fe3O4,FeSO4和Fe2(SO4)3在9mol/LKOH溶液中能够溶出,溶出的铁加速了锌粉的腐蚀,锌将碱液中的铁置换并沉积在锌粉上,降低了析氢过电位。3种铁化合物在碱性溶液中的溶解度和加速锌腐蚀的程度依次为FeSO4>Fe2(SO4)3>Fe3O4。
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| 关 键 词： | 锌锰电池 铁化合物 锌粉 溶出 腐蚀 析氢 |
| 文章编号： | 1008-7923（2006）06-0380-04 |
| 收稿时间： | 2006-02-27 |
| 修稿时间： | 2006年2月27日 |
Dissolution of several iron compounds and their effects on zinc corrosion in alkaline solution |
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| JIN Hui-jie,LI Wei-shan,QIU Shi-zhou.Dissolution of several iron compounds and their effects on zinc corrosion in alkaline solution[J].Chinese Battery Industry,2006,11(6):380-383. |
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| Authors: | JIN Hui-jie LI Wei-shan QIU Shi-zhou |
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| Abstract: | The solubility of Fe3O4,FeSO4 and Fe2(SO4)3 in 9mol/L KOH solution and corrosion of zinc powders in the solution with dissolved Fe3O4,FeSO4 and Fe2(SO4)3 were studied by qualitative analysis and measuring the volume of hydrogen evolution.It was found that Fe3O4,FeSO4 and Fe2(SO4)3 could be dissolved in 9mol/L KOH solution and that iron could be deposited on zinc from the solution.The hydrogen evolution was depolarized by the deposited iron so that the corrosion of zinc powders was accelerated.The order of the solubility of this three kinds of iron compounds in alkaline solution and the degree of accelerating the corrosion of zinc powders was as the following:FeSO4>Fe2(SO4)3 > Fe3O4. |
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| Keywords: | Zn-MnO2 battery iron compound zinc powder dissolution corrosion hydrogen evolution |
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