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oai:iwate-u.repo.nii.ac.jp:00010080 2023-05-16T11:47:27Z 1515:1519

Electrochemical behavior of Al in a non-aqueous alkyl carbonate solution containing LiBOB salt Myung, Seung-Taek Natsui, Hiroshi Sun, Yang-Kook Yashiro, Hitoshi Al Current collector Passivation LiBOB Lithium Battery Aluminum was studied as a current collector for rechargeable lithium batteries to understand electrochemical and passivation behavior. Electrochemical polarization tests, in situ scratch polarization tests and time-of-flight secondary ion mass spectroscopy (ToF-SIMS) analysis in lithium bis-oxalato borate (LiBOB)-containing alkyl carbonate solution were conducted. The Al foil did not follow the alloy and de-alloy process with the LiBOB salt in electrolyte at 0 V vs. Li/Li+ in the cathodic sweep. During the anodic scan to the noble direction, the absence of an oxidation peak up to 3 V vs. Li/Li+ indicated that the air-formed oxide layer of Al was not reduced to metal. Oxide-free Al surfaces made by the in situ scratch test during the electrochemical polarization resulted in abrupt alloy formation with Li at 0 V vs. Li/Li+, but the newly formed surface formed passive films at higher potential with oxygen, namely, Al–O compound, as confirmed by ToF-SIMS. journal article Elsevier B.V. 2010-12-15 AM application/pdf Journal of Power Sources 24 195 8297 8301 0378-7753 https://iwate-u.repo.nii.ac.jp/record/10080/files/jps-v195i24p8297-8301.pdf https://iwate-u.repo.nii.ac.jp/records/10080 10.1016/j.jpowsour.2010.07.027 Copyright © 2010 Elsevier B.V.