期刊
MATERIALS CHEMISTRY FRONTIERS
卷 4, 期 8, 页码 2307-2313出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qm00126k
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资金
- UC Riverside
- Korea Institute of Materials Science through the UC-KIMS Center for Innovation Materials for Energy and Environment [POC3400]
- Hydrogen Energy Innovation Technology Development Program of the National Research Foundation of Korea (NRF) - Korean government (Ministry of Science and ICT(MSIT)) [NRF-2019M3E6A1064279]
Single-crystalline CoFe alloy nanoparticles encapsulated in nitrogen-doped carbon nanotubes (CoFe@N-C) were synthesized through a simple heat-treatment in an N-2 environment. CoFe@N-C effectively catalyzed the overall water splitting in alkaline media. Specifically, the as-synthesized CoFe@N-C exhibited excellent activity towards the oxygen evolution reaction (OER) with a low over-potential of 292 mV at 10 mA cm(-2) and the hydrogen evolution reaction (HER) with a low overpotential of 110 mV at 10 mA cm(-2). The good electrocatalytic properties may be attributed to the synergistic electronic coupling between single-crystalline CoFe and highly conductive N-doped CNTs and the enrichment of active sites. Additionally, CoFe@N-C showed excellent stability and durability with no observable deviation in the overpotential for the OER and HER after 1000 cycles of cyclic voltammetry (CV).
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