利用Ti-IrO2阳极在硝酸盐介质中电沉积MnO2

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.

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

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.