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Citation: Liu Shulan, Qin Qixian, Cheng Danhong, Guo Hetong. Study on Cathodic Hydrogen Evolution Behavior of Electrodeposited Rare Earth Alloy Ni-La[J]. Chinese Journal of Applied Chemistry, ;1995, 12(5): 115-116. shu

Study on Cathodic Hydrogen Evolution Behavior of Electrodeposited Rare Earth Alloy Ni-La

Department of Applied Chemistry, Tianjin University, Tianjin 300072

Received Date: 27 December 1994
Revised Date: 6 April 1995

Ni-La alloy coating containing 22.58 wt% rare earth La was prepared by elec-trodeposition technique from aqueous solution. The results of XRD tests and calculation based on the XRD spectra show that the Ni-La alloy coating obtained is a displacement solid solution. Activation energy of cathodic hydrogen evolution reaction in alkaline solution and real surface area of the Ni-La alloy and Ni electrodes were determined through electrochemi-cal tests. It is found from the results that the real surface area of the Ni-La allov electrode is substantially larger than that of Ni electrode. Activation energy of cathodic hydrogen evolu-tion reaction in 25wt% NaOH solution of the Ni-La alloy electrode is enormously lower than that of Ni electrode. It can be concluded that the coating of electrodeposited rare earth alloy Ni-La possesses excellent electrocatalytic activity for hydrogen evolution reaction.
- Ni-La alloy,
- electrodeposition,
- hydrogen evolution reaction
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