Investigation on Electrochemical Properties of La1-xMgx(NiCoAl)3.6Alloy Employed as Negative Electrode in High Power MH-Ni Battery

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (9): 1680.

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Investigation on Electrochemical Properties of La_1-xMg_x(NiCoAl)_3.6Alloy Employed as Negative Electrode in High Power MH-Ni Battery

ZHANG Xin-Bo, ZHAO Min-Shou

Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2002-05-22 Online:2003-09-24 Published:2003-09-24

Abstract

Abstract: The La_1-xMg_x(NiCoAl)_3.5system compounds, La_0.9Mg_0.1Ni_3.1Co_0.3Al_0.2, La_0.7Mg_0.3Ni_3.1· Co_0.3Al_0.2, La_0.8Mg_0.2Ni_3.0Co_0.4Al_0.2and La_0.9Mg_0.1Ni_3.1Co_0.2Al_0.3have been prepared by arc melting of constituent elements in Ar atmosphere. The electrochemical properties of these alloys have been studied through the charge-discharge recycle testing. The X-ray diffraction(XRD) analysis reveals that the as-prepared alloys have quite different crystal structures from that of AB₅-type alloy. It can be found that La_1-xMg_x(NiCoAl)_3.6system alloys are capable of performing a high rate discharge. The as-prepared alloys have much higher middle voltage than those of AB₅-type alloy during the discharge period.

Key words: Metal hydride electrode, Electrochemical properties, High rate discharge

CLC Number:

O646

TrendMD:

ZHANG Xin-Bo, ZHAO Min-Shou. Investigation on Electrochemical Properties of La_1-xMg_x(NiCoAl)_3.6Alloy Employed as Negative Electrode in High Power MH-Ni Battery[J]. Chem. J. Chinese Universities, 2003, 24(9): 1680.

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Investigation on Electrochemical Properties of La_1-xMg_x(NiCoAl)_3.6Alloy Employed as Negative Electrode in High Power MH-Ni Battery

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