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Perovskite [email protected] carbon nanofibers as robust and efficient oxygen electrocatalysts for Zn-air batteries.

Authors
  • Lin, Haoqing1
  • Xie, Jiao1
  • Zhang, Zhenbao1
  • Wang, Shaofeng2
  • Chen, Dengjie3
  • 1 Guangdong Engineering & Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China. , (China)
  • 2 Guangdong Engineering & Technology Research Centre of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China. , (China)
  • 3 Guangdong Engineering & Technology Research Centre of Graphene-Like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of Colloid and Interface Science
Publisher
Elsevier
Publication Date
Jan 01, 2021
Volume
581
Issue
Pt A
Pages
374–384
Identifiers
DOI: 10.1016/j.jcis.2020.07.116
PMID: 32771746
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

We applied a novel solid-liquid co-electrospinning approach to synthesize hybrid LaCoO3 perovskite [email protected] carbon nanofibers ([email protected]) as an effective and robust electrocatalyst for Zn-air batteries. [email protected] featured an integrated structure with well-crystallized perovskite nanoparticles uniformly distributed in micro/mesoporous NCNF. In addition, [email protected] exhibited a high specific surface area of ~183.3 m2 g-1 and a large pore volume of ~0.164 m3 g-1. The rotating-electrode measurement revealed the better intrinsic activity and more favorable stability of [email protected] in comparison with their counterparts. Moreover, Zn-air batteries employing [email protected] showed a relatively smaller discharge-charge voltage gap of ~0.95 V and longer cycling stability than the battery adopting the physically blended LCNP and NCNF. We ascribed the improved electrochemical activity to the enhanced synergistic interaction originating from the successful coupling of LCNP and NCNF. Copyright © 2020 Elsevier Inc. All rights reserved.

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