A silica co-electrodeposition route to nanoporous Co3O4 film electrode for oxygen evolution reaction

A silica co-electrodeposition route to nanoporous Co3O4 film electrode for oxygen evolution reaction
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用于析氧反应的纳米孔 Co3O4 薄膜电极的二氧化硅共电沉积路线

DOI:
10.1016/j.electacta.2013.11.010
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发表时间:
2014-01
影响因子:
6.6
通讯作者:
Hu, Ji-Ming
Hu, Ji-Ming
中科院分区:
材料科学2区
文献类型:
--
作者:
Wu, Lian-Kui;Hu, Ji-Ming

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采用两步法在不锈钢衬底上制备了纳米多孔Co3O4(po-Co3O4)薄膜。首先,将混合溶胶-凝胶前驱体在阴极电位下通过电化学共沉积制备了co3o4 - sio2复合膜。然后,将得到的复合膜在浓KOH溶液中连续循环伏安,刻蚀sio2组分,形成po- co3o4膜。所得膜电极对析氧反应(OER)表现出满意的电催化性能。
Nanoporous Co3O4(po-Co3O4) films have been prepared on stainless steel substrate by a novel two-step method. Firstly, a composite Co3O4-SiO2film was fabricated via electrochemical co-deposition under a cathodic potential from the mixed sol-gel precursor. Then, the obtained composite film was underwent consecutive cycling voltammetries in a concentrated KOH solution to etch the SiO2component, leading to the formation of po-Co3O4films. The resultant film electrode exhibits satisfactory electrocatalytic property towards the oxygen evolution reaction (OER).
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