Electrodeposited SiO2 film: a promising interlayer of a highly active Ti electrode for the oxygen evolution reaction
Electrodeposited SiO2 film: a promising interlayer of a highly active Ti electrode for the oxygen evolution reaction
复制标题
电沉积 SiO2 薄膜：用于析氧反应的高活性 Ti 电极的有前景的中间层
DOI：
10.1039/c6ta03931f
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发表时间：
2016-01-01
影响因子：
11.9
通讯作者：
Hu, Ji-Ming
中科院分区：
文献类型：
--
作者：
Wu, Lian-Kui;Liu, Xin-Yu;Hu, Ji-Ming
Ti-supported IrO2 or RuO2 oxide coated electrodes are widely used for the oxygen evolution reaction (OER) in acidic media. Electrocatalytic activity and long-term stability need to be further improved for these types of electrodes. A highly porous and well-adhered electrodeposited SiO2 (e-SiO2) film is proposed as the interlayer in this work to meet the above-mentioned requirements. The results show that the active oxide fully fills in the porous network throughout the whole thickness of the e-SiO2 film, to form “total-depth” highly porous oxide electrocatalytic coatings. For this reason, more than 1 order of magnitude higher apparent activity towards the OER at the Ti/e-SiO2/IrO2 (or RuO2) electrode is achieved compared to that of the conventional Ti/IrO2 or Ti/RuO2 electrode. Literature survey indicates that these novel electrodes are one of the most active Ti electrodes ever reported. The service life of this type of electrode is also obviously enhanced due to the “inter-locking” structure formed between the active oxide layer and e-SiO2 film.
