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Corresponding Author

Hui YE

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.

Keywords

Hydrogen storage alloy, Electrochemical performances, Low temperature properties

Publication Date

2002-11-28

Online Available Date

2002-11-28

Revised Date

2002-11-28

Received Date

2002-11-28

References

[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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