期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 5, 页码 2601-2609出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.12.160
关键词
Hydrogen evolution reaction; Transitional metal dichalcogenides; Graphene; Nanowires
资金
- National Natural Science Foundation Committee of China Academy of Engineering Physics (NSAF) [U1630108]
- National Natural Science Foundation of China [21373196, 11434009]
The number of exposed active sites in a catalyst plays a key role in determining its catalytic performance. However, the aggregation effect in nanostructured catalysts causes much less reactive sites exposed. In this paper, we report a novel structure of WSe2/rGO with highly exposed WSe2 active edge sites by uniformly imbedding the rGO between each WSe2 nanosheets. With the introduction of rGO, the electron transport property of the WSe2/rGO hybrid structure has also been enhanced. The structure and composition of the samples were investigated by the X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. Our electrochemical characterizations confirm that the WSe2/rGO hybrid structure exhibits enhanced electrochemical catalytic performance with a Tafel slop of 85 mV/dec for HER, much smaller than that of the pure WSe2. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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