Journal
NANO ENERGY
Volume 33, Issue -, Pages 45-54Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.01.027
Keywords
Poly(ionic liquid); Solid electrolyte; Hierarchical structure; Lithium-ion battery; Sodium-ion battery
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Funding
- National Key Basic Research Program of China [2014CB932400]
- National Key Technologies R D Program [2016YFB0901504]
- National Natural Science Foundation of China [51232005, U1330123]
- China Postdoctoral Science Foundation [2015M580092]
- China Academy of Engineering Physics [U1330123]
- Production-Study-Research Cooperation Project of Guangdong Province [2014B090901021]
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The rapid development of lithium (Li)-ion and sodium (Na)-ion batteries requires advanced solid electrolytes that possess both favorable electrochemical performance and safety assurance. Herein we report a hierarchical poly (ionic liquid)-based solid electrolyte (HPILSE) for high-safety Li-ion and Na-ion batteries. This hybrid solid electrolyte is fabricated via in situ polymerizing 1,4-bis[3-(2-acryloyloxyethyl)imidazolium-1-yl] butane bis[bis(trifluoromethanesulfonyl) imide] (C1-4TFSI) monomer in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide (EMITFSI)-based electrolyte which is filled in poly(diallyldimethylammonium) bis(trifluoromethanesulfonyl) imide (PDDATFSI) porous membrane. The well-designed hierarchical structure simultaneously provides the prepared HPILSE with high ionic conductivity (> 10(-3) S cm(-1) at 25 degrees C), satisfied electrochemical stability, inherent incombustibility, good mechanical strength and flexibility. More intriguingly, the in situ assembled LiFePO4/Li and Na-0.9[Cu0.22Fe0.30Mn0.48]O-2/Na cells using HPILSE exhibit superior cycling performances with high specific capacities. Both the excellent performance of HPILSE and the simple fabricating process of HPILSE-based solid-state cells make it potentially as one of the most promising electrolyte materials for next generation Li-ion and Na-ion batteries.
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