期刊
SCIENTIFIC REPORTS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-11614-1
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资金
- Global Frontier R&D Program on Center for Multiscale Energy System - National Research Foundation under the Ministry of Science, ICT & Future Planning, Korea [2011-0031570]
- Korea Center for Artificial Photosynthesis (KCAP) located in Sogang University - Minister of Science, ICT and Future Planning (MSIP) through the National Research Foundation of Korea [2009-0093883]
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant - Korea Government Ministry of Trade, Industry and Energy [20114010203090]
- Ministry of Trade, Industry and Energy (MOTIE, Korea) under Sensor Industrial Technology Innovation Program [10063682]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2017R1D1A1A09000823]
A new generation of boronic ionic liquid namely 1-ethyl-3-methylimidazolium difluoro(oxalate) borate (EMImDFOB) was synthesized by metathesis reaction between 1-ethyl-3-methylimiazolium bromide and lithium difluoro(oxalate) borate (LiDFOB). Ternary gel polymer electrolyte membranes were prepared using electrolyte mixture EMImDFOB/LiDFOB with poly vinylidenefluoride-cohexafluoropropylene (PVdF-co-HFP) as a host matrix by facile solvent-casting method and plausibly demonstrated its feasibility to use in lithium ion batteries. Amongst ternary gel electrolyte membrane, DFOB-GPE3, which contained 80 wt% of EMImDFOB/LiDFOB and 20 wt% PVdF-co-HFP, showed excellent electrochemical and cycling behaviors. The highest ionic conductivity was found to be 10-3 Scm(-1) at 378 K. Charge-discharge profile of Li/DFOB-GPE3/LiCoO2 coin cell displayed a maximum discharge capacity of 148.4 mAhg(-1) at C/10 rate with impressive capacity retention capability and columbic efficiency at 298 K.
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