TY  - JOUR
AU  - Hou, Xu
AU  - Pollard, Travis P
AU  - He, Xin
AU  - Du, Leilei
AU  - Ju, Xiaokang
AU  - Zhao, Wenguang
AU  - Li, Meirong
AU  - Wang, Jun
AU  - Paillard, Elie
AU  - Lin, Hai
AU  - Sun, Jingyu
AU  - Xu, Kang
AU  - Borodin, Oleg
AU  - Winter, Martin
AU  - Li, Jie
TI  - “Water‐in‐Eutectogel” Electrolytes for Quasi‐Solid‐State Aqueous Lithium‐Ion Batteries
JO  - Advanced energy materials
VL  - 12
IS  - 23
SN  - 1614-6832
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2022-02144
SP  - 2200401 -
PY  - 2022
AB  - The development of high safety lithium-ion batteries (LIBs) is greatly impeded by the flammability and leakage concerns of typical organic solvent-based electrolytes. As one of the alternative classes of electrolytes, hydrogel electrolytes exhibit high safety, high flexibility, low cost, and are benign to the environment. However, the narrow electrochemical stability window (ESW) of typical hydrogel electrolytes restricts the operating voltage of battery cells. Here, a new class of “water-in-eutectogel (WiETG)” electrolyte is reported, fabricated by combining a hydrogel with a “deep eutectic solvent” (LiTFSI in acetamide). The obtained WiETG electrolyte exhibits non-flammability, high ionic conductivity, and a wide ESW. LiMn2O4||Li4Ti5O12 cells with the WiETG electrolyte exhibit good cycling stability, high flexibility, and high safety. This newly developed WiETG electrolyte not only broadens the ESW of typical hydrogel electrolytes, but also opens a new perspective on future directions and guidance for the design of high safety electrolytes for flexible LIBs and beyond.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000791450500001
DO  - DOI:10.1002/aenm.202200401
UR  - https://juser.fz-juelich.de/record/907667
ER  -