质子交换膜水电解一体化析氧电极载体催化剂

doi:10.16085/j.issn.1000-6613.2015.01.027

化工进展 ›› 2015, Vol. 34 ›› Issue (1): 156-159.DOI: 10.16085/j.issn.1000-6613.2015.01.027

质子交换膜水电解一体化析氧电极载体催化剂

刘园, 贾丰春

河南机电高等专科学校电气工程系, 河南新乡 453003

收稿日期:2014-04-08 修回日期:2014-06-09 出版日期:2015-01-05 发布日期:2015-01-05
作者简介:刘园(1984-),女,助教,硕士,主要从事电池制造方向研究。E-mail yuaners2008@163.com。

Supported catalysts in integrated oxygen evolution electrode for Proton exchange membrane water electrolysis

LIU Yuan, JIA Fengchun

Department of Electrical Engineering, Henan Mechanical and Electrical Engineering College, Xinxiang 453003, Henan, China

Received:2014-04-08 Revised:2014-06-09 Online:2015-01-05 Published:2015-01-05

摘要/Abstract

摘要： 以氯铱酸为前体,钛网为支撑体,二氧化钛为载体,采用浸渍-热分解法首次成功制备了一体化IrO₂-TiO₂/Ti析氧电极,进一步采用热压法制备膜电极(MEA)。综合扫描电镜(SEM)、循环伏安(CV)、交流阻抗(EIS)以及单池极化曲线测试,研究了载体对于析氧电极形貌以及性能的影响。结果表明:未加入载体二氧化钛的析氧电极表面以裂缝为主,孔隙率较低;而加入载体二氧化钛的析氧电极表面裂纹基本消失,取而代之的是大量的催化剂簇以及孔结构的生成,极大地提高了析氧电极的电催化活性。单池测试表明,电流密度为1000mA/cm²时,添加载体二氧化钛后制备的析氧电极的析氧电位大约是1.70V。

关键词: 质子交换膜, 载体, 电解, 催化剂

Abstract: Using chloroiridic acid as the precursor, titanium mesh as the substrate and titanium oxide as the support, integrated oxygen evolution electrode of IrO₂-TiO₂/Ti was prepared by thermal decomposition method successfully for the first time. Then a membrane electrode assembly (MEA) was prepared via hot-press. The effects of support on the electrode morphology and performance were investigated by scanning electron microscopy (SEM), cyclic voltammogram (CV), impedance and single cell test. The results showed that the electrode surface was mainly cracks and the porosity was very low. However, the cracks disappeared instead of dense catalyst clusters and pore structure, when the support was added to the oxygen evolution electrode, which improved the catalytic activity of the electrode immensely. The single cell test showed that the voltage was 1.70 V, at 1000mA/cm².

Key words: proton exchange membrane (PEM), support, electrolysis, catalyst

中图分类号:

TM911.4

刘园, 贾丰春. 质子交换膜水电解一体化析氧电极载体催化剂[J]. 化工进展, 2015, 34(1): 156-159.

LIU Yuan, JIA Fengchun. Supported catalysts in integrated oxygen evolution electrode for Proton exchange membrane water electrolysis[J]. Chemical Industry and Engineering Progree, 2015, 34(1): 156-159.

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质子交换膜水电解一体化析氧电极载体催化剂

Supported catalysts in integrated oxygen evolution electrode for Proton exchange membrane water electrolysis

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