Research output: Contribution to journal › Article › peer-review
In Situ X-ray Photoelectron Spectroscopy Study of Lithium Interaction with Graphene and Nitrogen-Doped Graphene Films Produced by Chemical Vapor Deposition. / Bulusheva, L. G.; Kanygin, M. A.; Arkhipov, V. E. et al.
In: Journal of Physical Chemistry C, Vol. 121, No. 9, 09.03.2017, p. 5108-5114.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In Situ X-ray Photoelectron Spectroscopy Study of Lithium Interaction with Graphene and Nitrogen-Doped Graphene Films Produced by Chemical Vapor Deposition
AU - Bulusheva, L. G.
AU - Kanygin, M. A.
AU - Arkhipov, V. E.
AU - Popov, K. M.
AU - Fedoseeva, Yu V.
AU - Smirnov, D. A.
AU - Okotrub, A. V.
N1 - Publisher Copyright: © 2017 American Chemical Society.
PY - 2017/3/9
Y1 - 2017/3/9
N2 - It is commonly accepted that the presence of nitrogen atoms in a graphene lattice improves many properties of carbon materials and particularly enhances their electrochemical capacity in Li ion batteries. Here, we present model experiments for revealing the difference in interaction of lithium with N-doped and N-free graphene samples by monitoring the changes in their electronic states after the deposition of Li vapors. Graphene and N-doped graphene films have been grown by chemical vapor deposition on copper substrates using methane and acetonitrile as precursors. The electronic structure of the films transferred onto SiO2/Si substrates was examined by X-ray photoelectron spectroscopy (XPS) before and after deposition of lithium from a Li evaporation source under vacuum conditions. A comparison between two graphene samples using in situ XPS measurements has detected a higher accumulation of lithium on the N-doped graphene, which implies its high prospects in energy storage applications. Analysis of the XPS core-level binding energy shifts showed that charge density donated by lithium is localized near the nitrogen defects, especially around the nitrogen atoms directly substituting for carbon atoms. (Graph Presented).
AB - It is commonly accepted that the presence of nitrogen atoms in a graphene lattice improves many properties of carbon materials and particularly enhances their electrochemical capacity in Li ion batteries. Here, we present model experiments for revealing the difference in interaction of lithium with N-doped and N-free graphene samples by monitoring the changes in their electronic states after the deposition of Li vapors. Graphene and N-doped graphene films have been grown by chemical vapor deposition on copper substrates using methane and acetonitrile as precursors. The electronic structure of the films transferred onto SiO2/Si substrates was examined by X-ray photoelectron spectroscopy (XPS) before and after deposition of lithium from a Li evaporation source under vacuum conditions. A comparison between two graphene samples using in situ XPS measurements has detected a higher accumulation of lithium on the N-doped graphene, which implies its high prospects in energy storage applications. Analysis of the XPS core-level binding energy shifts showed that charge density donated by lithium is localized near the nitrogen defects, especially around the nitrogen atoms directly substituting for carbon atoms. (Graph Presented).
KW - ION BATTERY ANODE
KW - ELECTRONIC-STRUCTURE
KW - MULTILAYER GRAPHENE
KW - CARBON NANOTUBES
KW - PERFORMANCE
KW - STABILITY
KW - TEMPERATURE
KW - MONOLAYER
KW - GRAPHITE
KW - EMISSION
UR - http://www.scopus.com/inward/record.url?scp=85015265227&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.6b12687
DO - 10.1021/acs.jpcc.6b12687
M3 - Article
AN - SCOPUS:85015265227
VL - 121
SP - 5108
EP - 5114
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 9
ER -
ID: 10273564