期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 2, 页码 623-631出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.7b00151
关键词
transition metal phosphides; layered double hydroxides; water splitting; bifunctional electrocatalyst; synergistic reaction
资金
- National Natural Science Foundation of China (NSFC)
- 973 Program [2014CB932102]
- Fundamental Research Funds for the Central Universities [buctrc201506, buctylkxj01]
- Higher Education and High-Quality and World-Class Universities [PY201610]
Electrocatalytic water splitting to give a continuous production of oxygen and hydrogen is one of goals of energy research aiming at sustainable energy demands, in which the development of bifunctional electrocatalysts toward both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) with high activity, good durability, and low cost remains a challenge. In this work, a bifunctional electrocatalyst based on transition metal phosphides CoNiP@layered double hydroxides (LDHs) core-shell nanosheets arrays for both OER and HER have been designed and synthesized. The resulting CoNiP@LDHs nanoarrays exhibit excellent electrocatalytic activity and a remarkable long-term durability (similar to 6 mV degradation after 500 h OER stability test). Especially, this hierarchical nanostructure needs a cell potential as low as 1.44 V at a current density of 10 mA cm(-2), which is the best performance of bifunctional electrocatalysts among transition metal phosphides to our knowledge.
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