标题
作者
作者:Yu, LT (Yu, Litao)[1,2,3 ]; Liu, J (Liu, Jun)[2,3,4 ]; Xu, XJ (Xu, Xijun)[2,3,4 ]; Zhang, LG (Zhang, Liguo)[1,2,3 ]; Hu, RZ (Hu, Renzong)[2,3,4 ]; Liu, JW (Liu, Jiangwen)[2,3,4 ]; Ouyang, LZ (Ouyang, Liuzhang)[2,3,4 ]; Yang, LC (Yang, Lichun)[2,3,4 ]; Zhu, M (Zhu, Min)[2,3,4 ]
期刊信息
摘要
To solve the problem of large volume change and low electronic conductivity of earth-abundant ilmenite used in rechargeable Na-ion batteries (SIBs), an anode of tiny ilmenite FeTiO3 nanoparticle embedded carbon nanotubes (FTO subset of CNTs) has been successfully proposed. By introducing a TiO2 shell on metal-organic framework (Fe-MOF) nanorods by sol-gel deposition and subsequent solid-state annealing treatment of these core-shell Fe-MOF@TiO2, such well-defined FTO subset of CNTs are obtained. The achieved FTO subset of CNT electrode has several distinct advantages including a hollow interior in the hybrid nanostructure, fully encapsulated ultrasmall electroactive units, flexible conductive carbon matrix, and stable solid electrolyte interface (SEI) of FTO in cycles. FTO subset of CNT electrodes present an excellent cycle stability (358.8 mA h g(-1) after 200 cycles at 100 mA g(-1)) and remarkable rate capability (201.8 mA h g(-1) at 5000 mA g(-1)) with a high Coulombic efficiency of approximately 99%. In addition, combined with the typical Na3V2(PO4)(3) cathode to constitute full SIBs, the assembled FTO subset of CNT//Na3V2(PO4)(3) batteries are also demonstrated with superior rate capability and a long cycle life.
关键词
作者关键词:tiny nanoparticles; ilmenite FeTiO3; metal-organic frameworks; hollow nanotubes; Na-ion batteries; Na-ion full batteries
作者信息
通讯作者地址:Liu, J; Zhu, M (通讯作者)
 | South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China. |
| South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China. |
| South China Univ Technol, China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Guangdong, Peoples R China. |
地址:
电子邮件地址:msjliu@scut.edu.cn; memzhu@scut.edu.cn
出版商
类别分类
研究方向:Chemistry; Science & Technology - Other Topics; Materials Science
Web of Science 类别:Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary