Journal
SOLID STATE IONICS
Volume 345, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2019.115159
Keywords
Succinonitrile; In-situ method; Polymerized ionic liquid; Lithium-ion batteries
Categories
Funding
- National Natural Science Foundation of China [21476158, 21621004]
- Program for Chang jiang Scholars and Innovative Research Team in University [IRT_15R46]
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division
- Foundation of National Key Laboratory of Science and Technology on Power Sources, P. R. China [9140C16020212-DZ2801]
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Novel solid polymer electrolytes based on succinonitrile (SN) plastic crystal electrolyte (SN-PCE) and polymerized ionic liquid (PIL) has been successfully synthesized via an in-situ method. The fabricated electrolyte (PIL-SN-PCE) is uniformly inlayed into the supporting matrix of polyimide, which effectively ameliorates the mechanical properties of the electrolyte. PIL can effectively enhance the thermal stability of electrolytes up to 300 degrees C and mitigate the parasitic reactions between the electrolytes and the electrodes. PIL-SN-PCE exhibits a remarkable oxidation ability up to 5.4 V vs Li/Li+ and a high room temperature ionic conductivity of 6.54 x 10(-4) S cm(-1). Furthermore, in-situ formed interface in PIL-SN-PCE guarantee an excellent compatibility with different electrodes, which can effectively improve the cycle stability and rate performances of both half-cells and full cells. Thus, PIL-SN-PCE is considered as a promising electrolyte for high energy density lithium-ion batteries.
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