TY - GEN
T1 - In situ observation of tin negative electrode / electrolyte interface by X-ray reflectivity
AU - Shimada, Koki
AU - Kawaguchi, Tomoya
AU - Ichitsubo, Tetsu
AU - Matsubara, Eiichiro
AU - Fukuda, Katsutoshi
AU - Uchimoto, Yoshiharu
AU - Ogumi, Zempachi
PY - 2013
Y1 - 2013
N2 - An electrode/electrolyte interface is obviously one of the most dominant factors controlling a battery performance. In the present work, a formation of a tin negative electrode/electrolyte interface (SEI) was investigated by an in situ X-ray reflectivity measurement. SEI was formed even at a high voltage of about 2.5 V vs Li/Li+. This voltage is much higher than the value of about 1.5 V in the previous works. Thus, SEI in the present work is clearly different from that formed by reductive decomposition of an electrolyte and/or reduction of Sn oxide. Its structure was seemingly an amorphous solid containing a quite amount of fluoride, which grows up to 150-200 nm thick by keeping for 1 h at about 2.5-2.6 V.
AB - An electrode/electrolyte interface is obviously one of the most dominant factors controlling a battery performance. In the present work, a formation of a tin negative electrode/electrolyte interface (SEI) was investigated by an in situ X-ray reflectivity measurement. SEI was formed even at a high voltage of about 2.5 V vs Li/Li+. This voltage is much higher than the value of about 1.5 V in the previous works. Thus, SEI in the present work is clearly different from that formed by reductive decomposition of an electrolyte and/or reduction of Sn oxide. Its structure was seemingly an amorphous solid containing a quite amount of fluoride, which grows up to 150-200 nm thick by keeping for 1 h at about 2.5-2.6 V.
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U2 - 10.1149/05001.0031ecst
DO - 10.1149/05001.0031ecst
M3 - Conference contribution
AN - SCOPUS:84875952667
SN - 9781623320003
T3 - ECS Transactions
SP - 31
EP - 37
BT - Interfaces and Interphases in Battery Systems
PB - Electrochemical Society Inc.
T2 - Interfaces and Interphases in Battery Systems - PRiME 2012
Y2 - 7 October 2012 through 12 October 2012
ER -