| 引用本文: | 韩家军,程瑾宁,耿林.Zn-PANi二次电池循环寿命影响因素[J].哈尔滨工业大学学报,2012,44(6):105.DOI:10.11918/j.issn.0367-6234.2012.06.024 |
| HAN Jia-jun,CHENG Jin-ning,GENG Lin.Studies on the influence factors of the cyclic life for Zn-PANi secondary batteries[J].Journal of Harbin Institute of Technology,2012,44(6):105.DOI:10.11918/j.issn.0367-6234.2012.06.024 |
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| 摘要: |
| 为研究Zn-聚苯胺二次电池的循环寿命影响因素,通过电化学方法,研究正极材料过充降解、负极钝化、枝晶形成、集流体腐蚀和电解液干涸5个因素对Zn-PANi电池循环寿命的影响．测试结果表明:负极形成枝晶引起电池短路是主要影响因素,使电池只有70个循环的寿命．其次,电池过充、正极材料降解导致电池的自放电,直接降低电池的循环寿命．此外,电解液干涸、负极钝化和集流体的选择均对电池的循环寿命产生不同程度的影响． |
| 关键词: Zn-PANi电池 枝晶 降解 钝化 |
| DOI：10.11918/j.issn.0367-6234.2012.06.024 |
| 分类号:TM911 |
| 基金项目:中国博士后科学基金资助项目(20100471049) |
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| Studies on the influence factors of the cyclic life for Zn-PANi secondary batteries |
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HAN Jia-jun1, CHENG Jin-ning2, GENG Lin1
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1.School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, China;2.School of the Ocean, Harbin Institute of Technology at Weihai, 264209 Weihai, Shandong, China
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| Abstract: |
| In order to research the Zn-polyaniline secondary battery life cycle impact factors, the five factors of influence on the cyclic life for Zn-PANi secondary batteries have been investigated electrochemically, which include materials degradation of the positive electrode due to overcharge, passivation of the negative electrode, dendrite formation, corrosion of the current collector and drying up of the electrolyte. The test results indicate that the main influence factor is the short-circuit aroused by the dendrite formation on the negative electrode, which enable the battery to have the life of only 70 cycles. Secondly, the degradation of positive electrode by over charge causes the self-discharge of battery, which reduces the battery cycle life significantly. In addition, the drying up of electrolyte, the passivation of the negative electrode and the choice of the current collector, all these bring about influences to the cycle life of battery to a certain extent. |
| Key words: Zn-PANi battery dendrite degradation passivation |
