文献类型：期刊文献

英文题名：Unzipped carbon nanotubes for aluminum battery

作者：Zhang, Erjin[1];Wang, Jue[1];Bin Wang[3];Yu, Xinzhi[1];Yang, Hongguan[1];Lu, Bingan[1,2]

第一作者：Zhang, Erjin

通讯作者：Lu, BG[1]

机构：[1]Hunan Univ, Sch Phys & Elect, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China;[2]Fujian Strait Res Inst Ind Graphene Technol, Quanzhou 362000, Fujian, Peoples R China;[3]Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Henan, Peoples R China

第一机构：Hunan Univ, Sch Phys & Elect, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China

通讯机构：[1]corresponding author), Hunan Univ, Sch Phys & Elect, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China.

年份：2019

卷号：23

起止页码：72-78

外文期刊名：ENERGY STORAGE MATERIALS

收录：;EI(收录号：20192907206980);Scopus(收录号：2-s2.0-85066124164);WOS:【SCI-EXPANDED(收录号:WOS:000495867200009)】；

基金：This work was financially supported by National Natural Science Foundation of China (Nos. 51672078 and 21473052), Hunan University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Independent Research Project (No. 71675004), Hunan Youth Talents (2016RS3025), Foundation of State Key Laboratory of Coal Conversion (Grant No. J17-18-903) and Henan science and technology program (NO. 192102310467).

语种：英文

外文关键词：Unzipped multi-walled carbon nanotubes; Aluminum battery; Positive electrode; Flexional; Fast rechargeable

摘要：As low-cost commercial materials, the application of carbon nanotubes (CNTs) in the aluminum battery is limited by the lack of active intercalation sites. Herein, a flexible unzipped multi-walled carbon nanotubes (UCNTs) film consisting of graphene nanoribbons and a carbon nanotube backbone is prepared via a simple, low-cost and scalable method for high-performance aluminum battery positive electrode. In the nanostructure, the neonatal graphene nanoribbons provide numerous active intercalation sites to store AlCl4- anions, while the internal core CNTs are responsible for the rapid transportation of electrons to the active sites. Fast transportation of electrons and anions in UCNT film are simultaneously achieved, promoting the kinetics in the aluminum battery. Thus the UCNT-Al battery exhibits a high storage performance with a capacity as high as 100 mA h g(-1) (current density: 2000 mA g(-1)) and a long cycle life of 5600 cycles with a capacity of 75 mA h g(-1) (Coulombic efficiency: 98%) at 5000 mA g(-1). Furthermore, the excellent flexibility and fast charging and variable discharging performance are beneficial for the development of portable devices. This work effectively tackles bottleneck caused by the lack of active sites for CNT-based aluminum batteries and accelerates the development of aluminum batteries.