Oxygen deficiency, a key factor in controlling the cycle performance of Mn-spinel cathode for lithium-ion batteries

Xia YG; Wang HY; Zhang Q; Nakamura H; Noguchi H; Yoshio M

Journal of Power Sources, Vol.166, No.2, 485-491, 2007

DOI10.1016/j.jpowsour.2007.01.023 Export Citation

Oxygen deficiency, a key factor in controlling the cycle performance of Mn-spinel cathode for lithium-ion batteries

Xia YG, Wang HY, Zhang Q, Nakamura H, Noguchi H, Yoshio M

Several series of Li-1 +/- x,Mn2-y,O-4 +/-delta and Li1.05AlyMn1.95-yO4 +/-delta samples with different oxygen defect degree have been synthesized by controlling synthesis temperature and procedures. The cycle performance of spinel as cathode in lithium batteries has been correlated with oxygen deficiency. The structure change of spinel during charge has also been investigated with respect with oxygen deficiency. (c) 2007 Published by Elsevier B.V.

Keywords:Al-doped spinels;cycling performance;oxygen deficiency;Mn dissolution;lithium-ion batteries