东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (2): 249-252.DOI: 10.12068/j.issn.1005-3026.2014.02.022

• 材料与冶金 • 上一篇    下一篇

利用Ti-IrO2阳极在硝酸盐介质中电沉积MnO2

王维大1，冯雅丽1，李浩然2，蔡震雷1   

  1. (1.北京科技大学 土木与环境工程学院， 北京100083； 2.中国科学院过程工程研究所生化工程国家重点实验室， 北京100190)
  • 收稿日期:2013-06-13 修回日期:2013-06-13 出版日期:2014-02-15 发布日期:2013-11-22
  • 通讯作者: 王维大
  • 作者简介:王维大(1984-)，男，河北张家口人，北京科技大学博士研究生；冯雅丽(1967-)，女，北京人，北京科技大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(21176026，21176242)；中国大洋矿产资源研究开发计划项目(DY125-15-T-08)；中央高校基本科研业务费专项资金资助项目(FRT-TP-09-002B).

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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摘要： 利用X射线衍射和电化学工作站表征了钛基二氧化铱(Ti-IrO2)电极的相结构及电化学性能，确定了将其作为阳极在硝酸盐介质中电沉积MnO2的最佳条件，并对所得电解MnO2进行了质量分析.研究结果表明:Ti-IrO2电极在抗钝化性能和电催化活性方面都好于Ti电极，更有利于MnO2的沉积；当电沉积条件为Mn2+浓度06mol/L、HNO3浓度03mol/L、电解温度90℃、电流密度60A/m2时，MnO2的电流效率为9956%，电耗为5809kW·h/t，所得到的MnO2纯度符合电池工业电解MnO2的标准，其晶型为γ型.

关键词: Ti-IrO2, MnO2, HNO3, 电沉积, 钝化

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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