ELECTROCHEMICAL BEHAVIOUR OF Nd~3+ REDUCED ON LIQUID Ga ELECTRODE IN MOLTEN CHLORIDE

Acta Metall Sin

1991, Vol. 27

Issue (3): 111-115 DOI:

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ELECTROCHEMICAL BEHAVIOUR OF Nd~3+ REDUCED ON LIQUID Ga ELECTRODE IN MOLTEN CHLORIDE

DU Senlin;SU Mingzhong;Changchun Institute of Applied Chemistry; Academia Sinica

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DU Senlin;SU Mingzhong;Changchun Institute of Applied Chemistry; Academia Sinica. ELECTROCHEMICAL BEHAVIOUR OF Nd~3+ REDUCED ON LIQUID Ga ELECTRODE IN MOLTEN CHLORIDE. Acta Metall Sin, 1991, 27(3): 111-115.

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Abstract The kinetics of electrochemical reaction of Nd~(3+) reduced on liquid Gaelectrode has been studied by cyclic voltammetry (CV) in molten chloride at 1073K.The results show that the reduction of Nd~(3+)? on Ga electrode proceeds in consequenttwo steps. For the first step, it is found to be a diffusion controlled reversible re-action at higher rate of potential scan, i. c., Nd~(3+)+e=Nd~(2+) and an irreversible rea-ction controlled by following chemical reaction at lower rate, i. c., Nd~(3+)+e?Nd~(2+)+mCl NdCl'_m~(-m). For the second step, alloying reaction of deposited Nd with Ga canbe observed and the reaction is found to irreversible, Nd~(2+)+2e→Nd(Ga). The stand-ard rate constant of this reactiin is estimated to be 7.0×10~(-3) cm/s.

Key words: Ga-Nd alloy molten salt Nd cyclic voltammetry

Received: 18 March 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I3/111

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