Effects of Ammonium Sulfite on Manganese Electrolysis Reaction and Hydrogen Evolution Reaction
Received:September 19, 2023  Revised:October 09, 2023
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DOI:doi:10.3969/j.issn.1007-7545.2024.02.004
KeyWord:manganese electrolysis reaction; ammonium sulfite; hydrogen evolution reaction; cyclic voltammetry
                    
AuthorInstitution
YE changmei 贵州省新材料研究开发基地
LI Wubin 贵州省新材料研究开发基地
HUANG Jian 贵州省新材料研究开发基地
LI Yong 贵州省新材料研究开发基地
ZHANG Yi 贵州省新材料研究开发基地
HU Zhitong 贵州省新材料研究开发基地
WU Zhanxin 贵州省新材料研究开发基地
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Abstract:
      The cathodic electrochemical mechanism was studied using electrochemical methods such as CV and LSV, and the effects of ammonium sulfite on structure of cathode surface and manganese crystal were investigated using analytical methods such as SEM and XPS. The results show that on the surface of the stainless steel cathode, the initial potential for hydrogen precipitation is —1.0 V, while the initial potential for manganese deposition is —1.40 V. Ammonium sulfite has a significant inhibitory effect on hydrogen evolution reaction, reducing the current of manganese deposition and DC power consumption. When the amount of ammonium sulfite is four times that of SeO2, the current efficiency of manganese deposition is as high as 67.42%, and ammonium sulfite is expected to become an additive to replace SeO2. In the small-scale energy spectrum of deposited manganese, 100% purity of Mn can be captured, which is beneficial for the development of high-purity manganese in the later stage.
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