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 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c5ta02784e |
| 通讯作者 | Ouyang, chuying(cyouyang@hotmail.com) |
| 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关键词 | INITIO MOLECULAR-DYNAMICS ; DOPED LI4TI5O12 ; ELECTROCHEMICAL PERFORMANCE ; RATE CAPABILITY ; X LESS ; CYCLING PERFORMANCE ; CATHODE MATERIAL ; LITHIUM ; SPINEL ; CHARGE |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000356865300013 |
| 出版者 | ROYAL SOC CHEMISTRY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374068 |
| 专题 | 物理研究所 |
| 通讯作者 | Ouyang, Chuying |
| 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. |
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