TY - JOUR
T1 - Effect of the atmosphere on chemical composition and electrochemical properties of solid electrolyte interface on electrodeposited Li metal
AU - Momma, Toshiyuki
AU - Nara, Hiroki
AU - Yamagami, Shinpei
AU - Tatsumi, Chika
AU - Osaka, Tetsuya
N1 - Funding Information:
This work was partly supported by the Grant-in-Aid for Specially Promoted Research “Establishment of Electrochemical Device Engineering” and by the Global COE program “Center for Practical Chemical Wisdom” from MEXT, Japan.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - Many efforts have been paid to realize the superior anodes for future Li batteries in either the dry Ar atmosphere or the dry air atmosphere. In this work, in order to clarify the effects of such atmospheres, the most reactive anodes of Li were freshly electrodeposited under the dry Ar or under the dry air condition. The Solid Electrolyte Interface (SEI) formed during the electrodeposition of Li anodes is revealed to have a different chemical composition and protective feature. The Li deposited under the dry air was revealed to have longer cycle life in the electrolyte than that deposited in Ar, even in the electrolyte containing ionic liquid. From the XPS results, the SEI formed in dry air is proved to be different from that formed in Ar gas atmospheres, that is, the SEI formed in dry air consists of Li 2CO3 and Li nitride. In order to improve the performance of the anodes, the atmosphere for the initial preparation of the anode/electrolyte interface should be tuned.
AB - Many efforts have been paid to realize the superior anodes for future Li batteries in either the dry Ar atmosphere or the dry air atmosphere. In this work, in order to clarify the effects of such atmospheres, the most reactive anodes of Li were freshly electrodeposited under the dry Ar or under the dry air condition. The Solid Electrolyte Interface (SEI) formed during the electrodeposition of Li anodes is revealed to have a different chemical composition and protective feature. The Li deposited under the dry air was revealed to have longer cycle life in the electrolyte than that deposited in Ar, even in the electrolyte containing ionic liquid. From the XPS results, the SEI formed in dry air is proved to be different from that formed in Ar gas atmospheres, that is, the SEI formed in dry air consists of Li 2CO3 and Li nitride. In order to improve the performance of the anodes, the atmosphere for the initial preparation of the anode/electrolyte interface should be tuned.
KW - Ar
KW - Battery
KW - Dry air
KW - Li anode
KW - SEI
UR - http://www.scopus.com/inward/record.url?scp=79956373912&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79956373912&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2011.03.095
DO - 10.1016/j.jpowsour.2011.03.095
M3 - Article
AN - SCOPUS:79956373912
SN - 0378-7753
VL - 196
SP - 6483
EP - 6487
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 15
ER -
