Dual‐Sites Coordination Engineering of Single Atom Catalysts for Flexible Metal–Air Batteries

Deshuang Yu; Feng Hu; Chia‐Ching Lin; LinLin Li; Xiaopeng Han; Shengjie Peng

doi:10.1002/aenm.202101242

journal article Jun 19, 2021

Dual‐Sites Coordination Engineering of Single Atom Catalysts for Flexible Metal–Air Batteries

Deshuang Yu Feng Hu

Chia‐Ching Lin LinLin Li

Xiaopeng Han

Shengjie Peng

Advanced Energy Materials Vol. 11 No. 30 · Wiley

View at Publisher Save 10.1002/aenm.202101242

Abstract

AbstractDual‐sites single atom catalysts hold promise for efficiently regulating multiple reaction processes and explicitly explaining the underlying mechanisms. However, delicate atomic engineering for dual‐site single atom catalysts remains a huge challenge. Herein, atomically dispersed Fe‐Ni single atoms embedded in a nitrogen‐doped carbon matrix (FeNi SAs/NC) are successfully developed with extraordinary activity for electrocatalytic oxygen reduction and evolution reactions (ORR/OER). The atomic FeNi SAs/NC catalyst displays high onset potential (0.98 V) and half‐wave potential (0.84 V) for the ORR, as well as, low overpotential of (270 mV) at 10 mA cm−2 for the OER. The density functional theory calculations indicate that the Fe site as the active center can facilitate the four‐electron reaction process, while Ni sites regulate the electronic structure of Fe sites and further reduce the energy barrier of the rate‐determining step. In addition, the nitrogen‐doped carbon matrix prevents the metal atoms from aggregation and corrosion, leading to the improvement of catalyst durability. As a proof of concept, flexible quasi‐solid‐state zinc– and aluminum–air batteries assembled with the FeNi SAs/NC catalyst exhibit superior peak power densities and discharging specific capacities outperforming the commercial Pt/C. This work provides rational guidance for the synthesis of bifunctional electrocatalysts in next‐generation energy devices for flexible consumer electronics.

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Metrics

396

Citations

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References

Details

Published: Jun 19, 2021
Vol/Issue: 11(30)
License: View

Authors

D

Deshuang Yu

Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

F

Feng Hu

Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

C

Chia‐Ching Lin

Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013 Taiwan

L

LinLin Li

Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

X

Xiaopeng Han

Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) School of Materials Science and Engineering Tianjin University Tianjin 300072 China

S

Shengjie Peng

Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

Funding

National Natural Science Foundation of China Award: 51871119

China Postdoctoral Science Foundation Award: 2018M640481

National Synchrotron Radiation Research Center

Cite This Article

Deshuang Yu, Feng Hu, Chia‐Ching Lin, et al. (2021). Dual‐Sites Coordination Engineering of Single Atom Catalysts for Flexible Metal–Air Batteries. Advanced Energy Materials, 11(30). https://doi.org/10.1002/aenm.202101242

Dual‐Sites Coordination Engineering of Single Atom Catalysts for Flexible Metal–Air Batteries

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