Effect of Synergistic Anticorrosion Treatments on Cycling Stability of Mg-Based Hydrogen Storage Electrode

稀土学报(英文版), 2006, 24(z2): 347-351.

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1.Baotou Research Institute of Rare Earths, Baotou 014010, China;College of Material and Metallurgy Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

2.Baotou Research Institute of Rare Earths, Baotou 014010, China;College of Mechanical Engineering, South China University of Technology, Guangzhou 510641, China

3.Baotou Research Institute of Rare Earths, Baotou 014010, China;College of Material and Metallurgy Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

4.Baotou Research Institute of Rare Earths, Baotou 014010, China

5.Baotou Research Institute of Rare Earths, Baotou 014010, China

6.Baotou Research Institute of Rare Earths, Baotou 014010, China

7.College of Material and Metallurgy Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China

基金项目: Project in Specific Technological R & D Fund Program for Research Institutes from Ministry of Science and Technology of the PRC(2004EG113030) Key Project in International Science and Technology Cooperation from Ministry of Science and Technology of the PRC(2005DFA50250) 国家自然科学基金(20363001)

Effect of Synergistic Anticorrosion Treatments on Cycling Stability of Mg-Based Hydrogen Storage Electrode

Keywords： hydrogen storage materials

In this paper, any two of the three anticorrosion agents, that is emulsifier (OP-10), soluble glass (Na2O·nSiO2) and glycerin (C3H8O3), were treated simultaneously on the surface of amorphous (a-) MgNi+5% Ml2Mg17 (Ml denotes the lanthanum-rich mish metal) electrode and the electrolyte. Effect of the synergistic anticorrosion treatment on charging/discharging cycle stability of the electrode was investigated. Contrasted with single treatment method, the cycling stability of the electrodes was further improved. The desirable synergistic anticorrosion method was that the electrode was treated by the soluble glass, and that OP-10 was added into the electrolyte. The cyclic voltammogram (CV) results of the electrode show clearly that the anticorrosion agent can change the electrochemical activity and mechanism of the electrode. The concentration of the anticorrosion agent in the electrolyte treated by the synergistic anticorrosion method was also investigated. The appropriate concentration of the anticorrosion agents in the electrolyte is 0.143%.

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Effect of Synergistic Anticorrosion Treatments on Cycling Stability of Mg-Based Hydrogen Storage Electrode

参考文献