Journal
APPLIED SURFACE SCIENCE
Volume 508, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.145302
Keywords
Ultrathin nanosheets; Synergistic effects; Electrocatalytic; Hydrogen evolution reaction; Doping engineering
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Funding
- National Natural Science Foundation of China [NSFC 21666023, NSFC 21467019]
- Natural Science Foundation of Inner Mongolia Autonomous Region of China [2017JQ01, 2019BS02015]
- Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region [NJYT-19-A01]
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In recent years, the design of highly efficient electrocatalyst for hydrogen evolution reaction arouses extensive interest. Herein, a hierarchical electrode material comprising nickel foam (NF) and W, Ru co-doped ultrathin NiP2 nanosheets are fabricated by a facile hydrothermal method and followed by further phosphating treatment. The W, Ru co-doped NiP2 ultrathin nanosheets exhibits an ultralow overpotentials of 17.8 mV to achieve 10 mA.cm(-2) in 1.0 M KOH, which is the best Ru-doped hydrogen evolution reaction (HER) electrocatalysts so far. The enhanced electrocatalytic performance can be attributed to the unique ultrathin nanosheets structure, synergistic effect of the W and Ru elements, and the amorphous carbon layer of the W-Ru/NiP2. More importantly, this design provides a particularly efficient and metal-doped transition metal phosphide with advanced HER performance.
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