2024-03-28T22:20:48Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00027220
2022-04-27T08:55:04Z
117:487
3:62:5592:1088
1,1-Difluoro-1-alkenes as New Electrolyte Additives for Lithium Ion Batteries
市川, 淳士
Kubota, Tadahiko
Ihara, Masayuki
Katayama, Shinichi
Nakai, Hideki
Ichikawa, Junji
© 2012 Elsevier B.V. NOTICE: this is the author’s version of a work that was accepted for publication in Journal of power sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, VOL207 , 2012, DOI:10.1016/j.jpowsour.2012.01.139
Five 1,1-difluoro-1-alkenes bearing aryl groups are investigated as electrolyteadditives for high-charge-voltage lithiumionbatteries with an aim to induce favorable solid electrolyte interphase (SEI) formation. Among them, 1,1-difluoro-4-phenylbut-1-ene (DF-1) forms appropriate SEIs on the cathode and anode by its reactions under oxidative and reductive conditions, respectively, which was suggested by linear sweep and cyclic voltammetry. The SEIs formed with the DF-1 containing electrolyte on the cathode and anode were analyzed by X-ray photoelectron spectroscopy and time of flight-secondary ion mass spectrometry, indicating the following: (i) the cathode surface has a LiF-rich layer with unsaturated hydrocarbons, and (ii) the anode surface also has a LiF-rich layer, which probably includes fluoromethylene (CHF) compounds. The formation of the SEIs on both electrodes with DF-1 results in low impedance being maintained, and thus, particularly good cycle performance even at high-charge-voltage.
Elsevier B.V.
2012-06
eng
journal article
http://hdl.handle.net/2241/117044
https://tsukuba.repo.nii.ac.jp/records/27220
10.1016/j.jpowsour.2012.01.139
0378-7753
AA00705373
Journal of power sources
207
141
149
https://tsukuba.repo.nii.ac.jp/record/27220/files/JPS_207.pdf
application/pdf
1.7 MB
2013-12-25