Enhanced performance of spherical natural graphite coated by Li 4Ti5O12 as anode for lithium-ion batteries | |
Lu, Mi ; Tian, Yanyan ; Zheng, Xiaodong ; Gao, Jun ; Huang, Bing ; Gao J(高军) | |
刊名 | http://dx.doi.org/10.1016/j.jpowsour.2012.07.044
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2012 | |
关键词 | Charge transfer Coatings Electrochemical cells Graphite Lithium Lithium compounds Surface treatment |
英文摘要 | The natural graphite (NG) is coated with Li4Ti5O 12 (LTO) and the composite shows a markedly enhanced rate performance due to the decrease of charge transfer resistance after LTO coating. The specific capacity of the NG charge-discharged at 2 C is increased by 60.3% (128.7 vs. 80.3 mAh g-1) by coating it with 1 wt.% of Li 4Ti5O12 (LTO). The comparison of the NG and that coated with 1 wt.% LTO at 0.1 C shows that the initial reversible capacity is increased from 318.1 mAh g-1 to 357.5 mAh g-1 after coating, while the total irreversible capacity loss after 50 cycles is decreased from 122.8 mAh g-1 to 103.9 mAh g-1. The composite improves the energy and power densities, safety, cycle life and lowers the price of the lithium-ion battery while avoiding the gas-swelling of full battery caused by Ti4+ because the final coating material is the lithiated LTO (Li7Ti5O12 or Li9Ti 5O12). 漏 2012 Elsevier B.V. All rights reserved. |
语种 | 英语 |
出版者 | Elsevier |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/89585] ![]() |
专题 | 化学化工-已发表论文 |
推荐引用方式 GB/T 7714 | Lu, Mi,Tian, Yanyan,Zheng, Xiaodong,et al. Enhanced performance of spherical natural graphite coated by Li 4Ti5O12 as anode for lithium-ion batteries[J]. http://dx.doi.org/10.1016/j.jpowsour.2012.07.044,2012. |
APA | Lu, Mi,Tian, Yanyan,Zheng, Xiaodong,Gao, Jun,Huang, Bing,&高军.(2012).Enhanced performance of spherical natural graphite coated by Li 4Ti5O12 as anode for lithium-ion batteries.http://dx.doi.org/10.1016/j.jpowsour.2012.07.044. |
MLA | Lu, Mi,et al."Enhanced performance of spherical natural graphite coated by Li 4Ti5O12 as anode for lithium-ion batteries".http://dx.doi.org/10.1016/j.jpowsour.2012.07.044 (2012). |
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