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Title: Ni 3 FeN‐Supported Fe 3 Pt Intermetallic Nanoalloy as a High‐Performance Bifunctional Catalyst for Metal–Air Batteries

Journal Article · · Angewandte Chemie
 [1];  [2];  [1]; ORCiD logo [1]
  1. Materials Science and Engineering Program &, Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
  2. Materials Science and Engineering Program &, Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA, School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China

Abstract Electrocatalysts for both the oxygen reduction and evolution reactions (ORR and OER) are vital for the performances of rechargeable metal–air batteries. Herein, we report an advanced bifunctional oxygen electrocatalyst consisting of porous metallic nickel‐iron nitride (Ni 3 FeN) supporting ordered Fe 3 Pt intermetallic nanoalloy. In this hybrid catalyst, the bimetallic nitride Ni 3 FeN mainly contributes to the high activity for the OER while the ordered Fe 3 Pt nanoalloy contributes to the excellent activity for the ORR. Robust Ni 3 FeN‐supported Fe 3 Pt catalysts show superior catalytic performance to the state‐of‐the‐art ORR catalyst (Pt/C) and OER catalyst (Ir/C). The Fe 3 Pt/Ni 3 FeN bifunctional catalyst enables Zn–air batteries to achieve a long‐term cycling performance of over 480 h at 10 mA cm −2 with high efficiency. The extraordinarily high performance of the Fe 3 Pt/Ni 3 FeN bifunctional catalyst makes it a very promising air cathode in alkaline electrolyte.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0005397
OSTI ID:
1378298
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 129 Journal Issue: 33; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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