Aging performances of Ti based IrO2+Ta2O5 anodes in sulfuric acid during electrolysis
文献类型：期刊论文
| 作者 | J. M. Hu ; H. M. Meng ; J. Q. Zhang ; C. N. Cao |
| 刊名 | Acta Physico-Chimica Sinica
 |
| 出版日期 | 2002 |
| 卷号 | 18期号:1页码:14-20 |
| 关键词 | degradation mechanism titanium anodes IrO2 Ta2O5 oxygen-evolving electrodes long service life surface choice films |
| ISSN号 | 1000-6818 |
| 中文摘要 | Physico-chemical and electrochemical performances of long service life Ti/70% IrO2-30% Ta2O5 (mole fraction) anodes prepared at 450 degreesC have been investigated over the whole electrolysis time in H2SO4 solution. The results showed that the whole electrolysis process of this anode could be divided into three Stages consisting of 'active', 'stable' and 'de-active' ones. In the first two stages, the dissolution of coated oxides was dominated (with preferential loss of IrO2 component). It was found that, in these two stages, the preferential orientations of (110) and (101) planes in IrO2 rutile decreased with the electrolysis time, and that of (002) plane increased, while the preferential orientations remained to be stabilized in the 'de-active' region. This indicated that the loss mechanism of the catalyst coatings was changed. Electrochemical impedance spectroscopy (EIS) measurements showed a slight increase in oxygen evolution reaction resistance of the oxide catalysts while a sharp rise in totally physical impedance of the whole anode in the 'de-active' region. X-ray diffraction analysis (XRD) showed that the intensity of TiO2 rutile reflections increased with the electrolysis time, with a sharp increasing in 4 de-active' region. According to the experimental results the degradation mechanism for long service life Ti based coating anodes has been proposed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36292]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. M. Hu,H. M. Meng,J. Q. Zhang,et al. Aging performances of Ti based IrO2+Ta2O5 anodes in sulfuric acid during electrolysis[J]. Acta Physico-Chimica Sinica,2002,18(1):14-20. |
| APA | J. M. Hu,H. M. Meng,J. Q. Zhang,&C. N. Cao.(2002).Aging performances of Ti based IrO2+Ta2O5 anodes in sulfuric acid during electrolysis.Acta Physico-Chimica Sinica,18(1),14-20. |
| MLA | J. M. Hu,et al."Aging performances of Ti based IrO2+Ta2O5 anodes in sulfuric acid during electrolysis".Acta Physico-Chimica Sinica 18.1(2002):14-20. |
入库方式： OAI收割
来源：金属研究所
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