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研究论文

提高AB_5型贮氢电极合金低温电化学性能研究

  • 叶辉 ,
  • 吴铸 ,
  • 李志林
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  • 中国科学院上海冶金研究所能源室,中国科学院上海冶金研究所能源室,中国科学院上海冶金研究所能源室,中国科学院上海冶金研究所能源室 上海200050 ,上海200050 ,上海200050 ,上海200050

收稿日期: 2002-11-28

  修回日期: 2002-11-28

  网络出版日期: 2002-11-28

Improvement of the Low Temperature Electrochemical Performance of AB_5-type Hydrogen Storage Alloy

  • YE Hui ,
  • WU Zhu ,
  • LI Zhi-lin
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  • (Shanghai Institute of Metallurgy,CAS,SHanghai 200050, China

Received date: 2002-11-28

  Revised date: 2002-11-28

  Online published: 2002-11-28

摘要

采用优化稀土成分并添加适量的硼改善AB5型贮氢合金的低温性能 .实验表明 ,含富Ce稀土及添加适量硼的AB5型合金 ,其低温电化学性能优良 ,能满足Ni/MH电池在低至 - 35℃小倍率电流密度放电的要求 .贮氢合金低温性能的改善与合金的微结构、热力学和动力学性能相一致

本文引用格式

叶辉 , 吴铸 , 李志林 . 提高AB_5型贮氢电极合金低温电化学性能研究[J]. 电化学, 2002 , 8(4) : 460 -462 . DOI: 10.61558/2993-074X.3310

Abstract

Optimizing the rare earth composition and doping with boron have been used to improve the low temperature performance of AB 5 hydrogen storage alloy.The results show that Ce-rich alloy with a proper amount of boron is suitable for Ni/MH battery with the lower-limit temperature down to 238 K under smaller current density (120 mA/g). The improvement of low temperature performance of hydrogen storage alloy is well consistent with its microstructure,thermodynamic and kinetic properties.

参考文献

[1] RFNelson.Powerrequirementsforbatteriesinhybridelectricvehicles[J].J .PowerSources,2000,91:2. [2] KErbacher.Anenvironmentalaircraftbattery(EAB)[J].J .PowerSources,1999,80:265. [3] HYe,ZLLi,ZWu,etal.Studyofthelow_temperatureelectrochemicalperformancesofhydrogenstorageal loy[C].HangZhou:Proceedingsofthe3rdChineseHydrogenEnergySymposium,2001.127. [4] YeH ,ZhangH .Developmentofhydrogenstoragealloysforhigh_powerNickel_Metalhydridebatteries[J].AdvanceEngineeringMaterials,2001,3:481. [5] YeH ,ZhangH ,WQ .Wu,etal.InfluenceoftheBoronadditiveonthestructure,thermodynamicsandelec trochemicalpropertiesoftheMmNi3.55Co0.75Mn0.4Al0.3 hydrogenstorageAlloy[J].J .AlloysComp.,2000,312:68. [6] YeH ,ZhangH .ImprovementofthelowtemperatureperformancesofMmNi3.55Co0.75Mn0.4Al0.3 hydrogenstoragealloy[J].J.ElectrochemicalSoc.,2002,149:A122_A126.
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