Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9760315 | Journal of Power Sources | 2005 | 6 Pages |
Abstract
Lithium-rich and Al-doped spinel materials with good capacity retention when cycled at high temperature have been synthesized. These materials have been studied in comparison with oxygen-deficient spinel using X-ray diffraction at room temperature (RT, 25 °C) and low temperature (LT, â30 °C). The XRD spectra at LT and RT showed that Al-doped spinel materials have superior structural stability against oxygen loss during heat treatment at 660 °C under Ar atmosphere. The in situ XRD spectra collected during cycling at high temperature (HT, 55 °C) showed that Al-doped spinel materials had better cycle performances and it was closely related to the structural stability against oxygen loss during charge-discharge cycling.
Related Topics
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Authors
Kyung Yoon Chung, Won-Sub Yoon, Hung Sui Lee, Xiao-Qing Yang, James McBreen, B.H. Deng, X.Q. Wang, M. Yoshio, R. Wang, J. Gui, M. Okada,