Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| W6+ & Br- codoped Li4Ti5O12 anode with super rate performance for Li-ion batteries | |
| Zhang, Qianyu1; Lu, Huansheng2; Zhong, Haoxiang1; Yan, Xiaodan1; Ouyang, Chuying2; Zhang, Lingzhi1 | |
| 2015 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
 |
| Volume | 3Issue:26Pages:13706-13716 |
| Abstract | 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. |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1039/c5ta02784e |
| WOS Subject Extended | Chemistry ; Energy & Fuels ; Materials Science |
| WOS Keyword | INITIO MOLECULAR-DYNAMICS ; DOPED LI4TI5O12 ; ELECTROCHEMICAL PERFORMANCE ; RATE CAPABILITY ; X LESS ; CYCLING PERFORMANCE ; CATHODE MATERIAL ; LITHIUM ; SPINEL ; CHARGE |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000356865300013 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10514 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 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 |
| Recommended Citation 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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