期刊
ACS CATALYSIS
卷 8, 期 5, 页码 3859-3864出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b00032
关键词
active iodine plasma; Cu2S nanosheet arrays; electrocatalysts; oxygen evolution
资金
- National Natural Science Foundation of China [21575092, 21622508]
- 111 project [B17030]
Developing simple and cost-effective methods for the rapid synthesis of oxygen evolution reaction (OER) electrocatalysts from earth-abundant elements is a highly desired yet challenging task. Herein we report a two-step strategy based on the use of a room-temperature- and atmospheric-pressure active iodine DBD plasma and an anion exchange reaction for the in situ generation of 3D Cu2S nanosheet arrays on Cu foam (Cu2S/CF). Owing to the advantages of this plasma-based approach, and the extremely rapid anion exchange reaction between the generated CuI and S2-, synthesis of the Cu2S/CF OER catalyst can be accomplished within 6 min. The porous 3D catalyst exhibited prominent electrocatalytic activity and persistent stability (>10 h) for OER with an overpotential of 336 mV to drive a geometrical current density of 20 mA cm(-2) in 1.0 M KOH, comparable to the performance of a noble-metal IrO2/CF electrode.
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