教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:Electronic structure of phospho-olivines LixFePO4 (x=0,1) from soft-x-ray-absorption and -emission spectroscopies
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出版(發表)日期2005/11/08
作品名稱Electronic structure of phospho-olivines LixFePO4 (x=0,1) from soft-x-ray-absorption and -emission spectroscopies
作品名稱(其他語言)
著者張經霖; Chang, C. L.; Augustsson, A.; Zhuang, G. V.; Butorin, S. M.; Osorio-Guillén, J. M.; Dong, C. L.; Ahuja, R.; Ross, P. N.; Nordgren, J.; Guo, J. H.
單位淡江大學物理學系
出版者College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數The Journal of Chemical Physics 123(18), pp.184717(9pages)
摘要The electronic structure of the phospho-olivine LixFePO4 was studied using soft-x-ray-absorption (XAS) and emission spectroscopies. Characteristic changes in the valence and conduction bands are observed upon delithation of LiFePO4 into FePO4. In LiFePO4, the Fe-3d states are localized with little overlap with the O-2p states. Delithiation of LiFePO4 gives stronger hybridization between Fe-3d states and O-2p states leading to delocalization of the O-2p states. The Fe L-edge absorption spectra yield “fingerprints” of the different valence states of Fe in LiFePO4 and FePO4. Resonant soft-x-ray-emission spectroscopy at the Fe L edge shows strong contributions from resonant inelastic soft x-ray scattering (RIXS), which is described using an ionic picture of the Fe-3d states. Together the Fe L-edge XAS and RIXS study reveals a bonding character of the Fe 3d-O2p orbitals in FePO4 in contrast to a nonbonding character in LiFePO4.
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語言英文
ISSN0021-9606
期刊性質國外
收錄於SCI
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