Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7744408 | Solid State Ionics | 2018 | 5 Pages |
Abstract
In this work, the Co2+-ion doping and N-doped carbon coating are adopted to improve the intrinsic and apparent electronic conductivities of Li4Ti5O12. This co-modified composite is fabricated through a ball-milling process followed by one-step solid-state reaction. XRD results demonstrate that the doped Co2+ does not destroy the spinel-type structure and it has successfully doped into the crystal structure of Li4Ti5O12. TEM images reveal that the surface of Li4Ti5-xCoxO12 particle is coated by a thin N-doped carbon layer with a thickness of 3-4â¯nm. Benefiting from the improved conductivity, the obtained composite displays an excellent rate capability and a stable cyclic property. Thus, the Co2+-ion doped and N-doped carbon-coated Li4Ti5O12 anode has great potential for the application of lithium-ion batteries.
Keywords
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Huaixin Liu, Caina Su, Xuemei Li, Yong Guo,