Research output: Contribution to journal › Article › peer-review
Multiscale characterization of 13C-enriched fine-grained graphitic materials for chemical and electrochemical applications. / Koroteev, V. O.; Münchgesang, W.; Shubin, Yu V. et al.
In: Carbon, Vol. 124, 01.11.2017, p. 161-169.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Multiscale characterization of 13C-enriched fine-grained graphitic materials for chemical and electrochemical applications
AU - Koroteev, V. O.
AU - Münchgesang, W.
AU - Shubin, Yu V.
AU - Palyanov, Yu N.
AU - Plyusnin, P. E.
AU - Smirnov, D. A.
AU - Kovalenko, K. A.
AU - Bobnar, M.
AU - Gumeniuk, R.
AU - Brendler, E.
AU - Meyer, D. C.
AU - Bulusheva, L. G.
AU - Okotrub, A. V.
AU - Vyalikh, A.
N1 - Funding Information: We thank Dr. E. I. Zhmurikov for providing the pristine sample of 13 C carbon material, Mr. S.I. Kozhemyachenko for the measurements of Raman spectra, Mr. A.V. Ishchenko for the HRTEM measurements, and Dr. M. Avdeev and Dr. A. Knop-Gericke for fruitful discussion. We are also grateful to the bilateral Program “Russian-German Laboratory at BESSY II” for the assistance in XPS and NEXAFS measurements. Financial support of the Ministry of Education and Science of the Russian Federation (agreement № RFMEFI61614X0007 ) and the Bundesministerium für Bildung und Forschung (grant № 05K14OFA ) in the framework of joint Russian-German research project “SYnchrotron and NEutron STudies for Energy Storage (SyNeSteSia)” is greatly acknowledged. V.O.K. thanks the German-Russian Interdisciplinary Science Center (Grant # C-2016a-2 ). Publisher Copyright: © 2017 Elsevier Ltd
PY - 2017/11/1
Y1 - 2017/11/1
N2 - 13C-enriched fine-grained graphitic material has been studied towards its potential for chemical and electrochemical applications. The structural and morphological modification of the material as results of pressure-assisted thermal treatment and gaseous BrF3 and/or Br2 room-temperature treatments has been investigated using a combination of the characterization tools: electron microscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron and near edge X-ray absorption fine structure spectroscopy, solid state nuclear magnetic resonance (NMR) spectroscopy and magnetic susceptibility measurements. It has been found that the starting material represents graphitized carbon with oxygen containing defects. The evidence of distorted sp2 hybridization of carbon was found in the Raman and the 13C NMR spectra. Under high pressure and temperature, some initially open graphitic edges are coupled that causes decreasing specific surface area and mean in-plane size of crystallites, and, generally, a higher degree of disorder. The Br2 treatment improves the material structure due to removal of tiny graphitic flakes and oxygenated carbon groups. The use of BrF3 results, in addition, in partial fluorination of graphitic material. Electrochemical characteristics along with a high degree of 13C isotope enrichment enable the application of these graphitic materials in operando studies using methods sensitive to 13C isotope, such as NMR.
AB - 13C-enriched fine-grained graphitic material has been studied towards its potential for chemical and electrochemical applications. The structural and morphological modification of the material as results of pressure-assisted thermal treatment and gaseous BrF3 and/or Br2 room-temperature treatments has been investigated using a combination of the characterization tools: electron microscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron and near edge X-ray absorption fine structure spectroscopy, solid state nuclear magnetic resonance (NMR) spectroscopy and magnetic susceptibility measurements. It has been found that the starting material represents graphitized carbon with oxygen containing defects. The evidence of distorted sp2 hybridization of carbon was found in the Raman and the 13C NMR spectra. Under high pressure and temperature, some initially open graphitic edges are coupled that causes decreasing specific surface area and mean in-plane size of crystallites, and, generally, a higher degree of disorder. The Br2 treatment improves the material structure due to removal of tiny graphitic flakes and oxygenated carbon groups. The use of BrF3 results, in addition, in partial fluorination of graphitic material. Electrochemical characteristics along with a high degree of 13C isotope enrichment enable the application of these graphitic materials in operando studies using methods sensitive to 13C isotope, such as NMR.
KW - SOLID-STATE NMR
KW - RAMAN-SPECTRA
KW - ION BATTERIES
KW - CARBON
KW - TEMPERATURE
KW - STORAGE
KW - PERFORMANCE
KW - DESIGN
KW - LAYERS
KW - CELLS
UR - http://www.scopus.com/inward/record.url?scp=85028339397&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2017.08.038
DO - 10.1016/j.carbon.2017.08.038
M3 - Article
AN - SCOPUS:85028339397
VL - 124
SP - 161
EP - 169
JO - Carbon
JF - Carbon
SN - 0008-6223
ER -
ID: 9917101