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Introducing Fe 2+ into Nickel–Iron Layered Double Hydroxide: Local Structure Modulated Water Oxidation Activity

Journal Article · · Angewandte Chemie
 [1];  [2];  [3];  [4];  [5];  [5];  [2];  [2];  [2];  [1];  [6];  [2];  [4];  [7];  [3];  [5];  [8]
  1. State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China, Department of Chemistry and Energy Sciences Institute Yale University West Haven CT 06516 USA
  2. State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
  3. School of Chemical, Biological, and Environmental Engineering Oregon State University Corvallis OR 97331 USA
  4. Chemistry Division Brookhaven National Laboratory Upton NY 11973 USA
  5. Department of Chemistry and Energy Sciences Institute Yale University West Haven CT 06516 USA
  6. SUNCAT Center for Interface Science and Catalysis Department of Chemical Engineering Stanford University Stanford CA 94305 USA
  7. Chemistry Research Laboratory Department of Chemistry University of Oxford Oxford OX1 3TA UK
  8. State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China, College of Energy Beijing University of Chemical Technology Beijing 100029 China
+ Show Author Affiliations
Abstract

Exploring materials with regulated local structures and understanding how the atomic motifs govern the reactivity and durability of catalysts are a critical challenge for designing advanced catalysts. Herein we report the tuning of the local atomic structure of nickel–iron layered double hydroxides (NiFe‐LDHs) by partially substituting Ni 2+ with Fe 2+ to introduce Fe‐O‐Fe moieties. These Fe 2+ ‐containing NiFe‐LDHs exhibit enhanced oxygen evolution reaction (OER) activity with an ultralow overpotential of 195 mV at the current density of 10 mA cm −2 , which is among the best OER catalytic performance to date. In‐situ X‐ray absorption, Raman, and electrochemical analysis jointly reveal that the Fe‐O‐Fe motifs could stabilize high‐valent metal sites at low overpotentials, thereby enhancing the OER activity. These results reveal the importance of tuning the local atomic structure for designing high efficiency electrocatalysts.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0012704
OSTI ID:
1457468
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 30 Vol. 130; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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