Graphene Foam Decorated with Ceria Microspheres as a Flexible Cathode for Foldable Lithium-Air Batteries

Yuexing Jiang, Junfang Cheng, Lu Zou, Xinyu Li, Yizhen Huang, Lichao Jia*, Bo Chi, Jian Pu, Jian Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Foldable lithium-air batteries with a high theoretical specific energy show wide applications in portable electronic devices, and the flexible cathodes play the most important role. In this work, CeO2 microspheres are grown in situ on 3 D interconnected graphene foam by hydrothermal treatment as the flexible cathode for lithium-air batteries. With the assistance of a macroporous framework for rapid O2 diffusion and CeO2 distributed uniformly for enhanced catalytic activity towards the oxygen reduction reaction, the lightweight flexible cathodes show a large discharge capacity of 3250 mA h g−1 at a current density of 200 mA g−1 (based on the whole cathode) and can cycle steadily for 80 times with a capacity limitation of 600 mA h g−1. The flexible lithium-air battery based on the new cathode also shows a stable discharge/charge potential platform during bending and good electrochemical reversibility after bending for at least 1000 times in ambient air. The study reveals that the high-catalytic-activity flexible cathode would be suitable for foldable lithium-air batteries.

Original languageEnglish
Pages (from-to)4231-4237
Number of pages7
JournalChemCatChem
Volume9
Issue number22
DOIs
Publication statusPublished - 2017 Nov 23
Externally publishedYes

Keywords

  • cerium
  • electrochemistry
  • graphene
  • lithium
  • nanoparticles

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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