期刊
MATERIALS TODAY COMMUNICATIONS
卷 27, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtcomm.2021.102412
关键词
Lithium-oxygen battery; High power; Electrochemistry
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2016R1A6A3A04013238]
- National Research Foundation of Korea [2016R1A6A3A04013238] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The nonaqueous Li-O-2 battery offers the highest energy density among various systems, but faces challenges such as high charging overpotential, low rate capabilities, and cycle stabilities. Further research is needed to improve high-power performance and cycle stability. This study demonstrates an improved nonaqueous Li-O-2 battery using a new electrolyte and cathode material to enhance its cycle stability and energy density.
The nonaqueous Li-O-2 battery has the highest energy density among various systems so far, often reported as comparable to that of gasoline; this exceptional energy potentiality has elicited worldwide interest as a superior energy storage system. Major challenges have limited the performance of Li-O-2 batteries regarding high charging overpotential, low rate capabilities, and cycle stabilities. Many approaches to reducing the charging overpotential and resulting enhanced cycling performance have been suggested, whereas only a few studies have focused on high-power performance. For successful electric propulsion applications, it is required that high-power technologies are developed for advanced Li-O-2 batteries. We show the operating possibility of the nonaqueous primary Li-O-2 cell at the A/g level and cycle stability of the nonaqueous rechargeable Li-O-2 cell using the electrolyte bis(trifluoromethane)sulfonimide lithium salt melted in dimethylglycol and single-walled carbon nanotube cathodes.
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