Conversion of porous PbO₂ layers through galvanic displacement reaction with Mn^{2 +} ions

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• 作者：Nicola Comisso ; Sandro Cattarin ; Paolo Guerriero ; Luca Mattarozzi ; Marco Musiani ; ^{marco.musiani@cnr.it} ; Enrico Verlato
• 关键词：Electrodeposition ; Gas bubble-templated deposition ; Manganese oxide ; Porous electrode
• 刊名：Electrochemistry Communications
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：73
• 期：Complete
• 页码：59-62
• 全文大小：737 K
• 卷排序：73

文摘

The preparation of a porous oxide electrode via galvanic displacement is demonstrated. Porous PbO2 was electrodeposited and then reacted with Mn2 + acid solutions. A galvanic displacement reaction led to PbO2 reduction and deposition of a Mn oxide. The amorphous Mn oxide formed a shell onto porous PbO2, maintaining its morphology. The galvanic exchange reaction enhanced the capacity of the electrodes.