期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 268, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2019.118440
关键词
Bifunctional electrocatalysts; Plasma nanotechnology; Plasma doping; Water splitting
资金
- National Natural Science Foundation of China [11665005, 51862001, 11804301, 51672249]
- Hundred-Talent Voyage Project of Jiangxi Province
- Natural Science Foundation of Jiangxi Province [20171ACB21049, 20171BAB211012]
- Foundation of Zhejiang Educational Committee [Y201329752]
- Australian Research Council
Bi-functional electrocatalysts capable to simultaneously sustain hydrogen and oxygen evolution reactions (HER, OER) under industry-relevant conditions of hydrogen production by water electrolysis are highly desired. Here, we implement a new concept of plasma-enabled simultaneous N-P heteroatom doping to achieve the high-lycompetitive activity and stability of trimetallic Ni-V-Fe bi-functional electrocatalysts on a NiFe foam (N-NiVFeP/NFF), evidenced by the lower overpotentials for HER (79 mV) and OER (229 mV) to deliver a current density of 10 mA cm(-2) (j(10)) in the 1.0 M KOH electrolyte. Meanwhile, the N-NiVFeP/NFF exhibits ultra-stable performances with a current density from 10 to 100 mA cm(-2) for over 100 h. Specifically, the HER and OER performances are near to those of noble-metal based electrocatalysts in the high current density region (> j(200)) attributing to the rich active sites exposed on the formed heterointerfaces among Ni-V-Fe phospho-nitrides, the changed electronic structure, and increased conductivity with nitrogen doping.
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