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Effects of Ag Doping and Coating on the Performance of Lithium Ion Battery Material Li4Ti5O12

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Abstract:

Series of anode materials (Ag modified Li4Ti5012) were acquired through two types of solid state calcination (doping and coating). The samples were characterized by XRD and their grain sizes were examined by laser particle-size analyzer and the morphology of them were obtained by SEM. At 0.5 C discharging rate, the first specific discharge capacities of Ag doped Li4Ti5O12 (the amounts of dopants were 0.1, 0.25, 0.5 and 1 wt% of the weight of Li4Ti5012) were found to be 136.8, 135.5, 140.4 and 155.6 mAh/g respectively. However, the corresponding values of coated samples (the amounts of coating were of the weight of Li4Ti5012) were respectively at the same condition. Obviously, the Ag coated samples possessed the higher capacities. The first specific discharge capacities of the Ag coated samples (the amounts of coating were 3.0, 5.0, 8.0 and 10 wt% of the weight of Li4Ti5012) were 170.74, 175.31, 191.61 and 192.06 mAh/g.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.6136

Publication date: March 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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