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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Scholars in Electrochemistry |
| Room No. |
Room 320 |
| Time |
THU 09:30-: |
| Code |
ELEC.O-3 |
| Subject |
Studies on the electrolyte enabling highly efficient performance of Li metal batteries |
| Authors |
Kisung Park, Hochun Lee*
Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science & Technology, Korea
|
| Abstract |
Graphite and silicon, which are representatively used as anodes of Li-ion batteries, seem to reach the saturation point regarding to relatively lower energy density of graphite-based Li-ion batteries and huge volume expansion causing rapid capacity fading of silicon-based Li-ion batteries for large-scale applications such as electric vehicles and grid energy storage.
Thus, lithium (Li) metal has attracted great interest again as the next generation energy source to solve the urgent requirement for high-energy storage systems due to its high theoretical capacity (3800 mAh/g). Nevertheless, some issues such as Li dendrite growth possibly leading to short-circuit and thermal runaway and poor coulombic efficiency (CE) have still prevented the commercialization of secondary batteries using Li metal in spite of intense studies.
Recently, the electrolyte which consists of superconcentrated imide salt and glyme solvent was suggested for the utilization of Li metal as anodes. This electrolyte showed great CE (> 98%) in repeated Li deposition/stripping processes in the previous report. In our study, a modified electrolyte named DS#1 is examined to exhibit an extraordinary CE (> 99%) and long life-time without short-circuit issue in Li-Li cycling. We further utilize DS#1 with the various cathodes and Li metal anode.
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| E-mail |
ki-sung0919@hotmail.com |
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122nd General Meeting of the KCS