Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (2): 249-252.DOI: 10.12068/j.issn.1005-3026.2014.02.022

• Materials & Metallurgy • Previous Articles     Next Articles

Electrodeposition of Manganese Dioxide on TiIrO2 Anode in Acidic Nitrate Medium

WANG Weida1, FENG Yali1, LI Haoran2, CAI Zhenlei1   

  1. 1. Civil and Environmental Engineering School, University of Science and Technology Beijing, 100083, China; 2. National Key Laboratory of Biochemical Engineering,Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
  • Received:2013-06-13 Revised:2013-06-13 Online:2014-02-15 Published:2013-11-22
  • Contact: FENG Yali
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Abstract: The phase structure and the electrochemical property of TiIrO2 electrode were studied with Xray diffraction analyzer and electrochemical workstation. The optimum conditions were obtained for manganese dioxide electrodeposition in acidic nitrate medium with TiIrO2 electrode as the anode. The quality property of the product was analyzed. The results show that TiIrO2 electrode is better in antipassivation and electrocatalytic activity than Ti electrode, so it is favorable for the electrodeposition of manganese dioxide. Under the conditions of 09mol/L manganese ion concentration, 03mol/L nitric acid concentration,90℃ electrolysis temperature and 60A/m2 current density, the current efficiency and the power consumption of the manganese dioxide product can reach 9956% and 5809kW·h/t, respectively. The quality of manganese dioxide product can meet the standard for electrolytic manganese dioxide in battery industry and the crystalline phase is γMnO2.

Key words: TiIrO2, manganese dioxide, nitric acid, electrodeposition, passivation

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