論文

2017年7月

Ni-Fe Nitride Nanoplates on Nitrogen-Doped Graphene as a Synergistic Catalyst for Reversible Oxygen Evolution Reaction and Rechargeable Zn-Air Battery

SMALL
  • Yuchi Fan
  • ,
  • Shintaro Ida
  • ,
  • Aleksandar Staykov
  • ,
  • Taner Akbay
  • ,
  • Hidehisa Hagiwara
  • ,
  • Junko Matsuda
  • ,
  • Kenji Kaneko
  • ,
  • Tatsumi Ishihara

13
25
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/smll.201700099
出版者・発行元
WILEY-V C H VERLAG GMBH

Obtaining bifunctional electrocatalysts with high activity for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is a main hurdle in the application of rechargeable metal-air batteries. Earth-abundant 3d transition metal-based catalysts have been developed for the OER and ORR; however, most of these are based on oxides, whose insulating nature strongly restricts their catalytic performance. This study describes a metallic Ni-Fe nitride/nitrogen-doped graphene hybrid in which 2D Ni-Fe nitride nanoplates are strongly coupled with the graphene support. Electronic structure of the Ni-Fe nitride is changed by hybridizing with the nitrogen-doped graphene. The unique heterostructure of this hybrid catalyst results in very high OER activity with the lowest onset overpotential (150 mV) reported, and good ORR activity comparable to that for commercial Pt/C. The high activity and durability of this bifunctional catalyst are also confirmed in rechargeable zinc-air batteries that are stable for 180 cycles with an overall overpotential of only 0.77 V at 10 mA(-2).

Web of Science ® 被引用回数 : 97

リンク情報
DOI
https://doi.org/10.1002/smll.201700099
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/28509363
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000404553100008&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019447310&origin=inward

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