Iron oxyfluorides as lithium-free cathode materials for solid-state Li metal batteries

Li Ping Wang, Tai Shan Wang, Xu Dong Zhang, Jia Yan Liang, Li Jiang, Ya Xia Yin, Yu Guo Guo*, Chun Ru Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

High energy density storage systems can be achieved by utilizing a lithium metal anode in solid-state Li secondary batteries. Herein, we report for the first time the use of a lithium-free cathode coupled with lithium metal for solid-state Li metal batteries. This lithium-free cathode composed of iron oxyfluoride (FeOF) nanorods can not only reduce the consumption of lithium resources, but also provide a good electrochemical performance. After being encapsulated by a highly conductive poly(3,4-ethylenedioxythiophene) (PEDOT) nanolayer, the coated FeOF nanorods exhibit a superior cycling stability (ca. 75% capacity retention after 200 cycles at 100 mA g-1) at 60 °C in a PEA solid electrolyte. This performance demonstrates the great potential of lithium-free cathodes for application in solid-state Li metal batteries.

Original languageEnglish
Pages (from-to)18464-18468
Number of pages5
JournalJournal of Materials Chemistry A
Volume5
Issue number35
DOIs
Publication statusPublished - 2017
Externally publishedYes

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