B,N Codoped Graphitic Nanotubes Loaded with Co Nanoparticles as Superior Sulfur Host for Advanced Li-S Batteries
作者:Wang, ZS (Wang, Zhuosen)[ 1 ] ; Shen, JD (Shen, Jiadong)[ 1 ] ; Ji, SM (Ji, Shaomin)[ 2 ] ; Xu, XJ (Xu, Xijun)[ 1 ] ; Zuo, SY (Zuo, Shiyong)[ 1 ] ; Liu, ZB (Liu, Zhengbo)[ 1 ] ; Zhang, DC (Zhang, Dechao)[ 1 ] ; Hu, RZ (Hu, Renzong)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1 ] ; Liu, J (Liu, Jun)[ 1,3 ] ...更多内容
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卷: 16 期: 7
文献号: 1906634
DOI: 10.1002/smll.201906634
出版年: FEB 2020
在线发表日期: JAN 2020
文献类型:Article
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摘要
Lithium-sulfur batteries (LSBs) are considered as one of the best candidates for novel rechargeable batteries due to their high energy densities and abundant required materials. However, the poor conductivity and large volume expansion of sulfur and the shuttle effect of lithium polysulfides (LPSs) have significantly hindered the development and successful commercialization of LSBs. Bean-like B,N codoped carbon nanotubes loaded with Co nanoparticles (Co@BNTs), which can act as advanced sulfur hosts for the novel LSB cathode, are fabricated. Uniform graphitic nanotubes improve the conductivity of the electrode and load more electroactive sulfur and buffer volume expansion during the electrochemical reaction. In addition, loaded Co nanoparticles and codoped B,N sites can significantly suppress the shuttle effect of LPSs with strong chemical interaction. It is established that the Co nanoparticles and codoped B,N can provide more active sites to catalyze the redox reaction of sulfur cathode. This stable Co@BNTs-S cathode displays an exceptional electrochemical performance (1160 mA h g(-1) after 200 cycles at 0.1 C) and outstanding stable cycle performance (1008 mA h g(-1) after 400 cycles at 1.0 C with an extremely low attenuation rate of 0.038% per cycle).
关键词
作者关键词:B; N codoped carbon; Co nanoparticles; Li-S batteries; redox kinetics; polysulfide adsorption
KeyWords Plus:CATHODE MATERIAL; LITHIUM; POLYSULFIDES; ELECTROCATALYSTS; NANOCRYSTALS; CHALLENGES; CONVERSION
作者信息
通讯作者地址: Liu, J (通讯作者)
显示更多South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
通讯作者地址: Ji, SM (通讯作者)
显示更多Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
显示更多[ 2 ] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China
显示更多[ 3 ] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510641, Peoples R China
电子邮件地址:smji@gdut.edu.cn; msjliu@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Natural Science Foundation of China
51771076
National Natural Science Foundation of China
NSFC51621001
1000 plan from Chinese Government
Guangdong Pearl River Talents Plan
2017GC010218
Guangzhou Science and Technology Plan Projects
201804010104
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出版商
WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Science & Technology - Other Topics; Materials Science; Physics
Web of Science 类别:Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter