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In‐Plane Black Phosphorus/Dicobalt Phosphide Heterostructure for Efficient Electrocatalysis
Author(s) -
Wang Jiahong,
Liu Danni,
Huang Hao,
Yang Na,
Yu Bo,
Wen Min,
Wang Xin,
Chu Paul K.,
Yu XueFeng
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201710859
Subject(s) - electrocatalyst , heterojunction , phosphide , black phosphorus , materials science , electrochemistry , chemical engineering , oxygen evolution , nanotechnology , catalysis , chemistry , optoelectronics , electrode , organic chemistry , engineering
Heterostructures composed of two‐dimensional black phosphorus (2D BP) with unique physical/chemical properties are of great interest. Herein, we report a simple solvothermal method to synthesize in‐plane BP/Co 2 P heterostructures for electrocatalysis. By using the reactive edge defects of the BP nanosheets as the initial sites, Co 2 P nanocrystals are selectively grown on the BP edges to form the in‐plane BP/Co 2 P heterostructures. Owing to disposition on the original defects of BP, Co 2 P improves the conductivity and offers more active electrocatalytic sites, so that the BP/Co 2 P nanosheets exhibit better and more stable electrocatalytic activities in the hydrogen evolution and oxygen evolution reactions. Our work not only extends the application of BP to electrochemistry, but also provides a new idea to improve the performance of BP by utilization of defects. Furthermore, this strategy can be extended to produce other BP heterostructures to expand the corresponding applications.