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In Situ X-ray absorption spectroscopic study for α-MoO3 electrode upon discharge/charge reaction in lithium secondary batteries

Title
In Situ X-ray absorption spectroscopic study for α-MoO3 electrode upon discharge/charge reaction in lithium secondary batteries
Authors
Kang J.-H.Paek S.-M.Choy J.-H.
Ewha Authors
최진호
SCOPUS Author ID
최진호scopus
Issue Date
2010
Journal Title
Bulletin of the Korean Chemical Society
ISSN
0253-2964JCR Link
Citation
vol. 31, no. 12, pp. 3675 - 3678
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
In-situ X-ray absorption spectroscopy (XAS) was used to elucidate the structural variation of α-MoO3 electrode upon discharge/charge reaction in a lithium ion battery. According to the XAS analysis, hexavalent Mo atoms in α-MoO3 framework are reduced as the amount of intercalated lithium ions increases. As lithium de-intercalation proceeds, most of pre-edge peaks are restored again. However, according to the Fourier transforms of the extended X-ray absorption fine structure (EXAFS) spectra, lithium de-intercalation reaction is partially irreversible upon the charge reaction, which is one of the main reasons why the capacity of α-MoO 3 electrode decreases upon successive discharge/charge cycles.
DOI
10.5012/bkcs.2010.31.12.3675
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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