Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 5, Issue 7, Pages 5646-5650Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b00598
Keywords
Metal organic framework; Electrocatalyst; Hydrogen evolution
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Funding
- Academic Research Fund of Ministry of Education in Singapore [RGI7/16]
- National Natural Science Foundation of China [21473111]
- Fundamental Research Funds for the Central Universities [GK201602002]
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In situ formation of Co/N-carbon via pyrolysis of layered cobalt metal organic frameworks in argon atmosphere was performed. As excellent hydrogen evolution reaction (HER) catalysts, the 2D hybrid layered structure composed of metallic cobalt and N-carbon exhibited a small overpotential of 103 mV (vs RHE) at 10 mA/cm(2), high cycle durability and considerable long-term stability for HER. The superior electrochemical performance of Co/N-carbon for HER could be attributed to such 2D setup that encompasses the low H atom binding energy of metallic cobalt, the high conductivity of carbon and the stability of carbon-encapsulated Co nanoparticles.
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