期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 602, 期 -, 页码 619-626出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.06.045
关键词
Nanoarrays; Phosphide; Electrocatalyst; Water splitting
资金
- National Natural Science Foundation of China [22065034, 21965035]
- Xinjiang Science and Technology Innovation Leading Talent Reserve Candidate [2019XS01,2020XS01]
By growing CoFeP two-dimensional nanoarrays on nitrogen-doped electrospun carbon nanofibers and utilizing a template-directed growth and phosphorization treatment, the CoFeP NS@NCNF exhibits efficient bifunctional electrocatalytic activities for OER and HER in 1 M KOH. The hierarchical structure derived from Prussian blue analogues (PBAs) provides a promising way for the preparation of transition metal-based electrocatalysts.
Developing high-efficient bifunctional electrocatalysts is significant for the overall water splitting. Bimetallic phosphides show great potential for the bifunctional hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalysts due to the excellent catalytic performance. Herein, the CoFeP two-dimensional nanoarrays successfully grown on nitrogen doped electrospun carbon nanofibers (CoFeP NS@NCNF) through template-directed growth and following phosphorization treatment. Benefiting from the hierarchical nanoarrays structure, synergistic effect of high electrical conductivity carbon nanofiber substrate and bimetallic phosphide, the CoFeP NS@NCNF exhibits efficient bifunctional electrocatalytic activities for OER and HER in 1 M KOH with overpotentials of 268 mV (eta(20)) and 113 mV (eta(10)), respectively. Moreover, the CoFeP NS@NCNF coupled two-electrode system needs a low voltage of 1.59 V at 10 mA cm(-2) for overall water splitting. This work provides a promising way for the preparation of transition metal-based electrocatalysts with hierarchical structure derived from Prussian blue analogues (PBAs) for OER and HER. (C) 2021 Elsevier Inc. All rights reserved.
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