期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 246, 期 -, 页码 156-165出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2019.01.030
关键词
Metal sulfide; Electrocatalyst; Hydrogen evolution reaction; Dealloying
资金
- National Natural Science Foundation of China [51771131, 51502092]
- Recruitment Program of Global Experts 1000 Talents Plan of China [WQ20121200052]
- Program for Professor of Special Appointment (Eastern Scholar) at Shangshai Institutions of Higher Learning [TP 2015028]
A novel amorphous nanoporous PdCuNi-S electrocatalyst is synthesized by a two-step dealloying method. The as-formed nanoporous PdCuNi-S catalyst exhibits excellent catalytic activity for the hydrogen evolution reaction (HER) in acidic media, which is very close to commercial Pt/C catalyst. The overpotential at 10 mA cm(-2) and Tafel slope are 48 mV and 35 mV dec(-1), respectively. In addition, the catalyst shows good electrochemical stability in HER. The outstanding property of PdCuNi-S catalyst for hydrogen generation is attributed to the bicontinuous nanoporous structure, improved charge transfer, more bridging S-2(2-) and/or apical S2- in amorphous state and synergetic interactions of Pd, Cu, Ni and S.
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