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Issue 35, 2017
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Iron oxyfluorides as lithium-free cathode materials for solid-state Li metal batteries

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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.

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

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Article information


Submitted
13 Jun 2017
Accepted
18 Aug 2017
First published
18 Aug 2017

J. Mater. Chem. A, 2017,5, 18464-18468
Article type
Communication

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

L. Wang, T. Wang, X. Zhang, J. Liang, L. Jiang, Y. Yin, Y. Guo and C. Wang, J. Mater. Chem. A, 2017, 5, 18464
DOI: 10.1039/C7TA05138G

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