Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 23, Pages 6725-6729Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201601367
Keywords
cobalt; electrocatalysis; hollow nanostructures; nanocrystals; water splitting
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Funding
- National Natural Science Foundation of China [21474094]
- Recruitment Program of Global Experts
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Highly active and stable electrocatalysts for hydrogen generation from neutral-pH water are highly desired, but very difficult to achieve. Herein we report a facile synthetic approach to cobalt nanocrystal assembled hollow nanoparticles (Co-HNP), which serve as an electrocatalyst for hydrogen generation from neutral-pH water. An electrode composed of Co-HNP on a carbon cloth (CC) produces cathodic current densities of 10 and 100 mAcm(-2) at overpotentials of -85 mV and -237 mV, respectively. The Co-HNP/CC electrode retains its high activity after 20 h hydrogen generation at a high current density of 150 mAcm(-2), indicating the superior activity and stability of Co-HNP as electrocatalyst.
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