W6+ & Br- codoped Li4Ti5O12 anode with super rate performance for Li-ion batteries
文献类型：期刊论文
| 作者 | Zhang, Qianyu1; Lu, Huansheng2; Zhong, Haoxiang1; Yan, Xiaodan1; Ouyang, Chuying2; Zhang, Lingzhi1 |
| 刊名 | journal of materials chemistry a
 |
| 出版日期 | 2015 |
| 卷号 | 3期号:26页码:13706-13716 |
| 英文摘要 | we report a novel li4ti5-xwxo12-xbrx (x = 0.025, 0.050 and 0.100) anode material simultaneously doped with w6+ and br- ions prepared by a simple solid-state reaction in air, aiming to significantly improve electrical conductivity of li4ti5o12. our theoretical calculation predicts that codoping with w6+ on the ti4+ site and br- on the o2- site can remarkably narrow down the band gap, and thus facilitate the electron transport in the lattice of lto. the comparative experiments prove that w & br-codoped lto exhibits higher electrical conductivity compared with undoped lto as expected, thus leading to improved rate capability and specific capacity. particularly, li4ti5 xwxo12 xbrx (x = 0.05) exhibits the best rate capability and cycling stability with an outstanding capacity retention of 88.7% even at 10 c rate after 1000 cycles. this codoping strategy with high valence transition metal and halide ions holds promise to be applied to other insulating cathode materials suffering from inferior electrical conductivity. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; energy & fuels ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; energy & fuels ; materials science |
| 关键词[WOS] | initio molecular-dynamics ; doped li4ti5o12 ; electrochemical performance ; rate capability ; x less ; cycling performance ; cathode material ; lithium ; spinel ; charge |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000356865300013 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10514]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Jiangxi Normal Univ, Dept Phys, Nanchang 330022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qianyu,Lu, Huansheng,Zhong, Haoxiang,et al. W6+ & Br- codoped Li4Ti5O12 anode with super rate performance for Li-ion batteries[J]. journal of materials chemistry a,2015,3(26):13706-13716. |
| APA | Zhang, Qianyu,Lu, Huansheng,Zhong, Haoxiang,Yan, Xiaodan,Ouyang, Chuying,&Zhang, Lingzhi.(2015).W6+ & Br- codoped Li4Ti5O12 anode with super rate performance for Li-ion batteries.journal of materials chemistry a,3(26),13706-13716. |
| MLA | Zhang, Qianyu,et al."W6+ & Br- codoped Li4Ti5O12 anode with super rate performance for Li-ion batteries".journal of materials chemistry a 3.26(2015):13706-13716. |
入库方式： OAI收割
来源：广州能源研究所
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