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Citation: SHI Yan-Hua, MENG Hui-Min, SUN Dong-Bai, NI Yong-Le, CHEN Dong. Effect of SbO_x+SnO₂ Intermediate Layer on the Properties of Ti-based MnO₂ Anode[J]. Acta Physico-Chimica Sinica, ;2007, 23(10): 1553-1559. doi: 10.3866/PKU.WHXB20071012 shu

Effect of SbO_x+SnO₂ Intermediate Layer on the Properties of Ti-based MnO₂ Anode

1.
Corrosion and Protection Center, Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China; Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, Beijing 100083, P. R. China

Received Date: 21 March 2007
Available Online: 1 August 2007

SbO_x+SnO₂ were prepared by thermal decomposition as intermediate layer of Ti based MnO₂ anode. Service lives of the anodes with or without SbOx +SnO₂ intermediate layer in 0.5 mol·L ^-1 H₂SO₄ solution were investigated by using accelerated electrolysis. Polarization curves and cyclic voltammetric curves (CVs) were utilized to analyze Cl₂ evolution reaction (CER) of the oxide electrodes. Cyclic voltammetric curves and electrochemical impedance spectroscopy (EIS) were utilized with the aim of obtaining detailed information related to the changes of the inner structure during the electrolysis. The results indicated that the main reason for the deactivation of MnO₂ anodes was the passivation derived from the increase of the thickness of the insulating TiO₂ layer. With the introduction of intermediate layer, the resistance between Ti base and active coating was lowered and the increase of resistance during the electrolysis was postponed dramatically, so the service lives were improved remarkably.
- Intermediate layer; Manganese dioxide; Accelerated life; EIS
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Effect of SbOx+SnO2 Intermediate Layer on the Properties of Ti-based MnO2 Anode

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通讯作者: 陈斌, bchen63@163.com

Effect of SbO_x+SnO₂ Intermediate Layer on the Properties of Ti-based MnO₂ Anode