Simple Chemical Solution Deposition of Co3O4 Thin Film Electrocatalyst for Oxygen Evolution Reaction

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• 作者：Hyo Sang Jeon ; Michael Shincheon Jee ; Haeri Kim ; Su Jin Ahn ; Yun Jeong Hwang ; Byoung Koun Min
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：November 11, 2015
• 年：2015
• 卷：7
• 期：44
• 页码：24550-24555
• 全文大小：383K
• ISSN：1944-8252

文摘

Oxygen evolution reaction (OER) is the key reaction in electrochemical processes, such as water splitting, metal鈥揳ir batteries, and solar fuel production. Herein, we developed a facile chemical solution deposition method to prepare a highly active Co₃O₄ thin film electrode for OER, showing a low overpotential of 377 mV at 10 mA/cm² with good stability. An optimal loading of ethyl cellulose additive in a precursor solution was found to be essential for the morphology control and thus its electrocatalytic activity. Our results also show that the distribution of Co₃O₄ nanoparticle catalysts on the substrate is crucial in enhancing the inherent OER catalytic performance.