Journal of the Korean Magnetic Resonance Society (한국자기공명학회논문지)
- Volume 3 Issue 2
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- Pages.90-99
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- 1999
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- 1226-6531(pISSN)
$^{11}B$ Quadrupole Interaction Studies of Boron-doped Graphite Electrode for Lithium Secondary Battery
- Lee, Youngil (Chemical Analysis Lab, Dongbu Research Council) ;
-
Han, Duk-Young
(Structural Analysis Division, Korea Basic Science Institute)
;
- Lee, Donghoon (Department of Physics, Pai Chai University) ;
- Woo, Ae-Ja (Department of Science Education, Ewha Woman's University) ;
- Lee, Sam-Hyeon (Department of Physics, Yonsei University) ;
- Kim, Kyung-Han (NMRi R&D Center, Chi Inc.,) ;
- Lee, Man-Ho (Department of Industrial Chemistry, Kyungbuk National University)
- Published : 1999.12.01
Abstract
Doping of boron atoms in graphite has been well known method to increase the discharge capacity as the negative electrode material for lithium secondary battery. Herein, the boron-doped graphites are prepared by mixing 1, 2.5, 5, and 7 wt. % of boron carbide in carbon during the graphitizing process. The structural states of boron in boron-doped graphites are investigated by solid-state 11B NMR spectroscopy. The resonance lines for substitutional boron atoms are identified as the second order quadrupolar powder pattern with the quardrupole coupling constant, QCC = 3.36(2) MHz. The quantitative analysis of 11B NMR spectra with boron-doped graphite has also been performed via simulation.
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