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N-doped graphene layers encapsulated NiFe alloy nanoparticles derived from MOFs with superior electrochemical performance for oxygen evolution reaction

Title
N-doped graphene layers encapsulated NiFe alloy nanoparticles derived from MOFs with superior electrochemical performance for oxygen evolution reaction
Author
백운규
Keywords
METAL-ORGANIC-FRAMEWORKS; WATER OXIDATION; HYDROGEN-EVOLUTION; ELECTROCATALYST; ALKALINE; HYDROXIDE; NANOCUBES
Issue Date
2016-09
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 6, Page. 1-8
Abstract
Water splitting, an efficient approach for hydrogen production, is often hindered by unfavorable kinetics of oxygen evolution reaction (OER). In order to reduce the overpotential, noble metal oxides-based electrocatalysts like RuO2 and IrO2 are usually utilized. However, due to their scarcity, the development of cost-effective non-precious OER electrocatalysts with high efficiency and good stability is urgently required. Herein, we report a facile one-step annealing of metal-organic frameworks (MOFs) strategy to synthesize N-doped graphene layers encapsulated NiFe alloy nanoparticles (NiFe@C). Through tuning the nanoparticle size and calcination temperature, NiFe@C with an average size of around 16 nm obtained at 700 degrees C exhibits superior OER performance with an overpotential of only 281 mV at 10 mA cm(-2) and high durability. The facile synthesis method and excellent electrochemical performance show great potential of NiFe@C in replacing the precious metal-based electrocatalysts in the OER.
URI
https://www.nature.com/articles/srep34004http://repository.hanyang.ac.kr/handle/20.500.11754/76797
ISSN
2045-2322
DOI
10.1038/srep34004
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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