运用真空蒸镀法对MH/Ni电池储氢合金电极进行了镀覆金属钴的表面修饰,测试了电池的放电容量、高倍率放电性能、循环寿命和充电时的内压,利用XPS和XRD对电极进行了表面和结构分析.实验结果表明,运用该方法对电极进行表面修饰可以降低电池内阻,提高电池的放电容量和放电电压,极片经过修饰的电池,5C(8.5A)放电容量提高了120mAh,放电平台电压提高了约0.05V,内阻降低了19.3%.极片经过表面镀钴后,显著改善了电池的循环性能,电池500周循环后的放电容量仍为初始容量的94.0%,同时,电池在充电时的内压有了明显的降低,充电效率有了较大的提高.
参考文献
| [1] | Akihiro T;Noriyuki F;Munehisa I .[J].Journal of Power Sources,2001,100:117-124. |
| [2] | Ishikawa H;Oguro K;Kato A .[J].Journal of the Less-Common Metals,1986,120:123-133. |
| [3] | Sakai T;Ishikawa H;Oguro K et al.[J].Journal of the Electrochemical Society,1987,134:558-562. |
| [4] | Sakai T;Yuasa A;Ishikawa H et al.[J].Journal of the Less-Common Metals,1991,172-174:1194-1204. |
| [5] | ChenW X;Tang Z Y;Guo H T et al.[J].Journal of Power Sources,1998,74:34-39. |
| [6] | Ikoma M;Komori K;Kaida S et al.[J].Journal of Alloys and Compounds,1999,284:92-98. |
| [7] | Choi WK.;Murayama J.;Shin-ya R.;Inoue H.;Iwakura C.;Zhang SG. .Surface analyses of an alkali-treated Zr0.9Ti0.1Ni1.1Co0.1Mn0.6V0.2 alloy for use in nickel metal hydride batteries[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):99-103. |
| [8] | Sepa D B;Vojnovic M V;Vracar L M et al.[J].Electrochimica Acta,1987,32(01):129-134. |
| [9] | 杨凯,吴锋.电极表面修饰对MH/Ni电池性能的影响[J].电池,2002(z1):101-102. |
| [10] | 宏存茂;徐嘉祥;杨敬武 .[J].金属功能材料,1999,6:83-86. |
| [11] | Durairajan A;Haran B S;Popov B V et al.[J].Journal of Power Sources,1999,83:114-120. |
| [12] | Sakai T;Ishikawa H;Oguro K et al.[J].Journal of the Electrochemical Society,1987,134:558-562. |
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