期刊
JOURNAL OF POWER SOURCES
卷 342, 期 -, 页码 947-955出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.01.021
关键词
Proton exchange membrane water electrolysis; Nanoporous gold; Nanoporous ultrathin film electrode; Membrane electrode assembly; Ultralow iridium loading
资金
- National Basic Research Program of China (973) [2015CB932304]
- National Natural Science Foundation of China [21436003, 21473197, U1508202]
A cost-effective nanoporous ultrathin film (NPUF) electrode based on nanoporous gold (NPG)/IrO2 composite has been constructed for proton exchange membrane (PEM) water electrolysis. The electrode was fabricated by integrating IrO2 nanoparticles into NPG through a facile dealloying and thermal decomposition method. The NPUF electrode is featured in its 3D interconnected nanoporosity and ultrathin thickness. The nanoporous ultrathin architecture is binder-free and beneficial for improving electrochemical active surface area, enhancing mass transport and facilitating releasing of oxygen produced during water electrolysis. Serving as anode, a single cell performance of 1.728 V (@ 2 A cm(-2)) has been achieved by NPUF electrode with a loading of IrO2 and Au at 86.43 and 100.0 mu g cm(-2) respectively, the electrolysis voltage is 58 mV lower than that.of conventional electrode with an Ir loading an order of magnitude higher. The electrolysis voltage kept relatively constant up to 300 h (@250 mA cm(-2)) during the course of durability test, manifesting that NPUF electrode is promising for gas evolution. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据