Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 45, Issue 46, Pages 24312-24321Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.06.235
Keywords
Cobalt phosphide; Boron nitrogen and phosphorous tri-doped; Carbon nanotube; Electrocatalyst; Hydrogen evolution reaction
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Funding
- Guangxi Science and Technology Project [AA17204083, AB16380030]
- National Natural Science Foundation of China
- National Natural Science Foundation of Fujian Province [U1705252]
- Natural Science Foundation of Guangdong Province [2015A030312007]
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Developing high performance, good stability and noble-metal-free electrocatalysts for renewable hydrogen evolution reaction (HER) remain a substantial challenge. Herein, we introduce a novel facile one-step in-situ strategy through pyrolysis for the synthesis of Co2P nanoparticles encapsulated Boron, Nitrogen, and Phosphorous tri-doped carbon nanotubes (Co2P/BNP-CNTs). The synergetic effect between Co2P nanoparticles and heteroatom doped CNTs contributes to the remarkable HER performance. The Co2P/BNP-CNT-900 electrocatalyst shows a low overpotential of 133 mV at a current density of 10 mA cm(-2) and a small Tafel slope of 90 mV dec(-1) in 0.1 M KOH media. More importantly, the Co2P/BNP-CNT-900 electrocatalyst exhibits superior long-term stability in alkaline solution at -0.25 V versus Reversible Hydrogen Electrode (RHE) for 15 h and up to 1000 cycles with negligible performance loss. Overall, our works suggest a one-pot facile synthesis strategy for rational designing high-performance electrocatalysts with enhanced HER performance.(C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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