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Title: Coupling FeNi alloys and hollow nitrogen-enriched carbon frameworks leads to high-performance oxygen electrocatalysts for rechargeable zinc–air batteries

Journal Article · · Sustainable Energy & Fuels
DOI:https://doi.org/10.1039/c8se00362a· OSTI ID:1524860
 [1];  [2];  [2]; ORCiD logo [3];  [4];  [2]; ORCiD logo [2]; ORCiD logo [4]
  1. Suzhou Research Inst. of Lanzhou Inst. of Chemical Physics, Lanzhou (China); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Suzhou Research Inst. of Lanzhou Inst. of Chemical Physics, Lanzhou (China)
  3. Texas A & M Univ., College Station, TX (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

A dual-template strategy for facile preparation of a bifunctional oxygen electrocatalyst for high-performance rechargeable zinc–air batteries has been reported. Coupling FeNi alloys with hollow nitrogen-doped carbon frameworks concludes in exceptionally high electrocatalytic oxygen reduction and evolution activities. In 1 M KOH, the resulting new material exhibits a superior oxygen evolution activity with a low overpotential of 250 mV to deliver 10 mA cm-2 current density, at which the obtained oxygen reduction performance is also comparable to that of commercial Pt/C and the half-wave potential reaches as high as 0.87 V. As a result, the bifunctional oxygen electrocatalysis performance thus obtained (0.61 V, 1 M KOH) ranks among the best of non-precious oxygen electrocatalysts. Using this new catalyst as an air electrode, the as-prepared rechargeable Zn–air battery shows a high current density of 215 mA cm-2 at a voltage of 1.0 V, large peak power density (310 mW cm-2), high potential efficiency (64.7% at 10 mA cm-2) and prolonged operation durability. This method provides a means to control the surface features, thereby tuning the catalytic properties of the material, and may open up new possibilities for the rational design and synthesis of new materials for electrochemical applications.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC); USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1524860
Alternate ID(s):
OSTI ID: 1471431
Journal Information:
Sustainable Energy & Fuels, Vol. 3, Issue 1; ISSN 2398-4902
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (4)

Recent Advances in Carbon‐Based Bifunctional Oxygen Catalysts for Zinc‐Air Batteries journal June 2019
Fe x Ni y /CeO 2 loaded on N-doped nanocarbon as an advanced bifunctional electrocatalyst for the overall water splitting journal January 2020
Nanostructured carbons containing FeNi/NiFe 2 O 4 supported over N-doped carbon nanofibers for oxygen reduction and evolution reactions journal January 2019
Janus-Typed Integrated Bifunctional Air Electrode with MnO x -NiFe LDH/Ni Foam for Rechargeable Zinc-Air Batteries journal January 2019