Development of bipolar all-solid-state lithium battery based on quasi-solid-state electrolyte containing tetraglyme-LiTFSA equimolar complex

Scientific Reports
Yoshiyuki GambeItaru Honma

Abstract

The development of high energy-density lithium-ion secondary batteries as storage batteries in vehicles is attracting increasing attention. In this study, high-voltage bipolar stacked batteries with a quasi-solid-state electrolyte containing a Li-Glyme complex were prepared, and the performance of the device was evaluated. Via the successful production of double-layered and triple-layered high-voltage devices, it was confirmed that these stacked batteries operated properly without any internal short-circuits of a single cell within the package: Their plateau potentials (6.7 and 10.0 V, respectively) were two and three times that (3.4 V) of the single-layered device, respectively. Further, the double-layered device showed a capacity retention of 99% on the 200th cycle at 0.5 C, which is an indication of good cycling properties. These results suggest that bipolar stacked batteries with a quasi-solid-state electrolyte containing a Li-Glyme complex could readily produce a high voltage of 10 V.

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Citations

Jun 25, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Dr Andrew DolanGregory G Warr
Jul 15, 2016·Physical Chemistry Chemical Physics : PCCP·Jeffrey J BlackLeigh Aldous
Oct 1, 2020·Advanced Science·Tiefeng LiuJun Lu
Dec 21, 2019·ACS Applied Materials & Interfaces·Hao ShenMarca M Doeff

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