TY - JOUR
T1 - Composition, depth profiles and lateral distribution of materials in the SEI built on HOPG-TOF SIMS and XPS studies
AU - Peled, E.
AU - Bar Tow, D.
AU - Merson, A.
AU - Gladkich, A.
AU - Burstein, L.
AU - Golodnitsky, D.
N1 - Funding Information:
Part of this work was sponsored by the Israeli Ministry of Science.
PY - 2001/7
Y1 - 2001/7
N2 - The importance to study separately the composition and properties of the solid electrolyte interphase (SEI) on basal and cross-section planes of graphite particles is demonstrated. The lateral distribution of SEI forming compounds at submicron resolution is presented for the first time. It was found that Li and F are the main constituents of the SEI cross-section. The SEI on the solution-side surface of the basal plane contains much more organic materials than that of the cross-section one. The SEI on the HOPG can be described as non-homogeneous. The SEI cross-section is dominated by Li and F, with one to several dozen micron-sized regions where Li and F are almost absent. The distribution of C2H (and other CxHy-based fragments), O, C2H3O2 (59), and C2H3O (43), shows full coverage and is fairly homogeneous. The true lateral size of the microphases is about 1 μm. TOF SIMS measurements provide direct evidence for the existence of polymers in the basal SEI.
AB - The importance to study separately the composition and properties of the solid electrolyte interphase (SEI) on basal and cross-section planes of graphite particles is demonstrated. The lateral distribution of SEI forming compounds at submicron resolution is presented for the first time. It was found that Li and F are the main constituents of the SEI cross-section. The SEI on the solution-side surface of the basal plane contains much more organic materials than that of the cross-section one. The SEI on the HOPG can be described as non-homogeneous. The SEI cross-section is dominated by Li and F, with one to several dozen micron-sized regions where Li and F are almost absent. The distribution of C2H (and other CxHy-based fragments), O, C2H3O2 (59), and C2H3O (43), shows full coverage and is fairly homogeneous. The true lateral size of the microphases is about 1 μm. TOF SIMS measurements provide direct evidence for the existence of polymers in the basal SEI.
KW - HOPG
KW - SEI
KW - TOF SIMS
KW - XPS studies
UR - http://www.scopus.com/inward/record.url?scp=0035397404&partnerID=8YFLogxK
U2 - 10.1016/S0378-7753(01)00505-5
DO - 10.1016/S0378-7753(01)00505-5
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AN - SCOPUS:0035397404
SN - 0378-7753
VL - 97-98
SP - 52
EP - 57
JO - Journal of Power Sources
JF - Journal of Power Sources
T2 - 10th International Meeting on Lithium Batteries
Y2 - 28 May 2001 through 2 June 2001
ER -
