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论文类型：期刊论文

发表时间：2014-01-01

发表刊物：RSC ADVANCES

收录刊物：SCIE、EI、Scopus

卷号：4

期号：39

页面范围：20521-20526

ISSN号：2046-2069

摘要：Electrolytic hydrogen by renewable electricity such as solar and wind power is considered as a sustainable energy storage approach. In this work, a porous nano/microarchitectured RuO2/Ni composite catalyst has been elaborately designed via a facile and controllable route. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), linear scanning voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) were used to scrutinize the catalysts and the electrochemical performance. The designed RuO2/p-Ni catalyst significantly displays enhanced catalytic activity and long-term durability toward hydrogen production compared with a Pt catalyst. The excellent performance of the composite catalyst could be ascribed to the fact that RuO2 can be well incorporated into the constructed porous Ni network with large specific surface area. The presence of RuO2 and the Ni network in pairs on the surface of the composite catalyst may not only result in a synergistically enhanced catalytic effect between RuO2 and the porous Ni network by hydrogen spillover, but also ensure that RuO2 firmly binds with the porous Ni network, consequently ensuring the long-term durability of the catalyst during the whole reaction.