Effects of Aluminum Doping on the Performance of Lithium Ion Battery Material Li4Ti5O12
Rechargeable lithium batteries have been widely used in various kinds of electronic device due to their good performance. Spinel-type electrode material Li4–xAlxTi5O12 (x = 0.05, 0.1, 0.2 and 0.3) was synthesized by solid state reaction. The samples were characterized by XRD and their grain sizes were examined by laser particlesize analyzer. At 0.5 C discharging rate, the first discharge specific capacities of Li4–xAlxTi5O12 (x = 0.05, 0.1, 0.2 and 0.3) were found to be 136.8, 135.5, 140.4 and 155.6 mAh g–1respectively. Among the series samples investigated, Li3.95Al0.05Ti5O12 exhibits a relatively high conservation rate of capacity and an excellent cycling stability.
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Document Type: Research Article
Publication date: February 1, 2011
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