| 碳化钨电极上氧的电催化还原 |
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| 引用本文： | 马淳安,黄赟,朱英红,陈赵扬. 碳化钨电极上氧的电催化还原[J]. 电化学, 2009, 15(1): 62. DOI: 10.61558/2993-074X.1956 |
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| 作者姓名： | 马淳安 黄赟 朱英红 陈赵扬 |
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| 作者单位： | 浙江工业大学化学工程与材料学院绿色化学合成技术国家重点实验室培育基地; |
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| 基金项目： | 浙江省国际合作重大科技专项简介 |
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| 摘 要： | 以喷雾干燥微球化处理的偏钨酸铵作为前驱体,CO/H2为碳化还原气源,应用固定床气固反应法制备碳化钨(WC)粉体,再以聚四氟乙烯作粘结剂制成碳化钨电极.应用XRD和SEM等表征、观察碳化钨样品,循环伏安和线性扫描法研究硫酸电解液中WC电极的氧还原电催化行为.检测表明,WC为球状颗粒;WC电极对氧还原反应具有较好的电催化活性,硫酸溶液中溶解氧还原反应控制步骤为吸附态(O2-)ads的生成;增加硫酸电解液浓度,开路电位正移,升高温度有利于反应进行.
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| 关 键 词： | 碳化钨 电极 电催化 氧还原 |
| 收稿时间： | 2009-02-28 |
Electrocatalytic Reduction of Oxygen on Tungsten Carbide Electrode |
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| MA Chun-an,HUANG Yun,ZHU Ying-hong,CHEN Zhao-yang. Electrocatalytic Reduction of Oxygen on Tungsten Carbide Electrode[J]. Electrochemistry, 2009, 15(1): 62. DOI: 10.61558/2993-074X.1956 |
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| Authors: | MA Chun-an HUANG Yun ZHU Ying-hong CHEN Zhao-yang |
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| Affiliation: | Zhejiang University of Technology;School of Materials Science and Engineering;Breeding Base of State Key Laboratory of Green Chemistry-Synthesis Technology;Hangzhou 310032;China |
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| Abstract: | Tungsten carbide(WC) catalysts were prepared by gas-solid reaction using ammonium metatungstate as precursors which were pretreated with spray drying sphere miniaturation,carbon monoxide as carrier gas and hydrogen as deoxidizing gas.The WC electrode was fabricated using WC catalyst powders and PTFE as binding agent,and characterized by XRD and SEM.Electrocatalyst behavior of WC for oxygen reduction reaction in the sulphuric acid solution was studied by steady-state voltammetry and cyclic voltammetry.The re... |
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| Keywords: | tungsten carbide electrode electrocatalyst oxygen reduction |
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