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

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)4231-4237
ページ数7
ジャーナルChemCatChem
9
22
DOI
出版ステータスPublished - 2017 11月 23
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 物理化学および理論化学
  • 有機化学
  • 無機化学

フィンガープリント

「Graphene Foam Decorated with Ceria Microspheres as a Flexible Cathode for Foldable Lithium-Air Batteries」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル