Issue 10, 2018

Room temperature solid state dual-ion batteries based on gel electrolytes

Abstract

The volume expansion of the electrodes and gas generation are still challenges for the current dual-ion batteries. Herein, we report a novel room temperature solid state dual-ion battery based on gel electrolytes. The dual-ion battery delivers a high reversible capacity of ∼80 mA h g−1, with excellent rate performance and long-term cycling stability. Moreover, the battery displays a high working voltage of 4.2 V, which enables to improve the application value of the battery. Typically, the problem of gas generation is further reduced by altering the charge cut-off voltage with gel electrolytes. First-principles simulations are performed to elucidate the anion intercalation behavior in a graphite cathode, demonstrating that the anion-intercalated graphite is stable without obvious distortion, and small activation energy barriers and fast ion-diffusivity are also reported. These convincing results indicate that this dual-ion battery is promising and environmentally friendly for future energy storage applications.

Graphical abstract: Room temperature solid state dual-ion batteries based on gel electrolytes

Supplementary files

Article information

Article type
Paper
Submitted
08 Jan 2018
Accepted
07 Feb 2018
First published
08 Feb 2018

J. Mater. Chem. A, 2018,6, 4313-4323

Room temperature solid state dual-ion batteries based on gel electrolytes

S. Wang, X. Xiao, C. Fu, J. Tu, Y. Tan and S. Jiao, J. Mater. Chem. A, 2018, 6, 4313 DOI: 10.1039/C8TA00221E

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