期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 28, 页码 23852-23858出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b07142
关键词
porphyrinic metal-organic framework; transition metal phosphides; electrocatalysts; porous materials; oxygen evolution reaction
资金
- NSFC [21371162, 21673213, 21521001]
- National Research Fund for Fundamental Key Project [2014CB931803]
- Recruitment Program of Global Youth Experts
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education
The sluggish kinetics of oxygen evolution reaction (OER) hampers the H-2 production by H2O electrolysis, and it is very important for the development of highly efficient and low-priced OER catalysts. Herein, a representative metalloporphyrinic MOF, PCN-600-Ni, integrated with graphene oxide (GO), serves as an ideal precursor and template to afford bimetallic iron-nickel phosphide/reduced graphene oxide composite (denoted as Fe-Ni-P/rGO-T; T represents pyrolysis temperature) via pyrolysis and subsequent phosphidation process. Thanks to the highly porous structure, the synergetic effect of Fe and Ni elements in bimetallic phosphide, and the good conductivity endowed by rGO, the optimized Fe-Ni-P/rGO-400 exhibits remarkable OER activity in 1 M KOH solution, affording an extremely low overpotential of 240 mV at 10 mA/cm(2), which is far superior to the commercial IrO2 and among the best in all non-noble metal-based electrocatalysts.
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