Water Oxidation by Manganese Oxide Electrocatalytic Films Synthesized by Chemical Solution Deposition Method

被引：13

作者：

Jeon, Hyo Sang ^{[1
]}

Ahn, Su Jin ^{[1
,2
]}

Jee, Michael Shincheon ^{[1
]}

Yoon, Sam S. ^{[2
,3
]}

Hwang, Yun Jeong ^{[1
]}

Min, Byoung Koun ^{[1
,2
]}

机构：

[1] Korea Inst Sci & Technol, Clean Energy Res Ctr, Seoul 02792, South Korea

[2] Korea Univ, Green Sch, Seoul 02841, South Korea

[3] Korea Univ, Sch Mech Engn, Seoul 02841, South Korea

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

OXYGEN EVOLUTION REACTION; CATALYSTS; REDUCTION; MNOX; ELECTROLYSIS; CELLS; PH;

D O I：

10.1149/2.0171611jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Water splitting catalyzed by low cost and earth abundant material is critically important issue in mass production of hydrogen from water using electrical energy. In this study, we developed highly efficient manganese oxide (MnOx) electrocatalytic films by a simple chemical solution deposition (CSD) method for oxygen evolution reaction (OER). Specifically, the MnOx electrocatalytic films were synthesized at different annealing temperatures at 350, 450, and 550 degrees C after the precursor solution coating on fluorine-doped tin oxide (FTO) glass substrates. The MnOx electrocatalytic film prepared at 450 degrees C has exhibited the most catalytic activity for OER with the overpotential of 387 mV at 10 mA/cm(2) in 1 M NaOH alkaline solution. We suggested that this high OER activity of MnOx electrocatalytic film arise from the higher surface area, richer Mn3+ state on the catalysts surface, and low charge transfer resistance between electrocatalytic film and electrolyte based on electrochemical surface area (ECSA), X-ray photoelectron spectroscopy (XPS), and electrochemical impedance spectroscopy (EIS) analysis. (C) 2016 The Electrochemical Society. All rights reserved.

引用

页码：F3113 / F3118

页数：6

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