Effect of lithium difluoro(oxalato) borate on LiMn2O4 / activated carbon hybrid capacitor

Title
Effect of lithium difluoro(oxalato) borate on LiMn2O4 / activated carbon hybrid capacitor
Authors
권용갑최원창최호석이중기
Keywords
LMO/AC; LiDFOB; electrolyte additive; capacitor; lithium difluoro(oxalato)bronate
Issue Date
2012-09
Publisher
ENGE2012
Abstract
As the lithium difluoro(oxalato) borate (LiDFOB) can effectively protect the electrodes from being attacked by other cell components and also improve their thermal stability via forming passivating films, LiDFOB was investigated as a functional additive for non-aqueous electrolytes for LiMn2O4 (LMO)/activated carbon (AC) hybrid capacitor. Therein, the electrolyte was 1M LiPF6 in a 1:1:1(volume%) mixture of ethylene carbonate(EC),dimethyl carbonate(DMC), and ethylmethyl carbonate(EMC). And then LiDFOB were added to the baseline electrolyte as additives in very small quantities and their effect on electrochemical performances were conducted under room temperature and 60 ℃. Finally, in order to evaluate other characteristics of hybrid capacitor with the addition of LiDFOB, XPS, FT-IR ,SEM and EDS were carried out.
URI
http://pubs.kist.re.kr/handle/201004/43101
Appears in Collections:
KIST Publication > Conference Paper
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