典型文献
Defect-rich porous tubular graphitic carbon nitride with strong adsorption towards lithium polysulfides for high-performance lithium-sulfur batteries
文献摘要:
The commercialization of the lithium-sulfur(Li-S)batteries is severely hampered by the shuttle effect and sluggish kinetics of lithium polysulfides(LiPSs).In this study,porous tubular graphitic carbon ni-tride(PTCN)was synthesized as the sulfur host by hydrothermal treatment,thermal shock and etching methods.By etching technology,the hollow nanotube tentacles grow on the tube wall of PTCN,the meso-porous appears on the inner wall,and a large number of nitrogen defects are introduced.The vertically-rooted hollow nanotube tentacles on the PTCN surface facilitate electron conduction for sulfur redox reactions.The hollow and porous architecture exposes plentiful active interfaces for accelerated redox conversion of polysulfide.Furthermore,the nitrogen defects in PTCN enable more excellent intrinsic con-ductivity,higher adsorbability and conversion catalytic activity to LiPSs.Based on the above synergetic effect,the batteries with PTCN/S cathodes realize a high discharge capacity of 504 mAh g-1 at 4 C and a stable cycling behavior over 500 cycles with a low capacity decay of 0.063%per cycle.The results indicate a promising approach todesigning a high performance electrode material for Li-S batteries.
文献关键词:
中图分类号:
作者姓名:
Heng Ma;Xin Liu;Ning Liu;Yan Zhao;Yongguang Zhang;Zhumabay Bakenov;Xin Wang
作者机构:
School of Materials Science and Engineering,Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology,Hebei University of Technology,Tianjin 300130,China;Institute of Batteries LLC,School of Engineering and Digital Sciences,National Laboratory Astana,Nazarbayev University,53 Kabanbay Batyr Avenue,Nur-Sultan 010000,Kazakhstan;South China Academy of Advanced Optoelectronics,International Academy of Optoelectronics at Zhaoqing,South China Normal University,Guangzhou 510006,China
文献出处:
引用格式:
[1]Heng Ma;Xin Liu;Ning Liu;Yan Zhao;Yongguang Zhang;Zhumabay Bakenov;Xin Wang-.Defect-rich porous tubular graphitic carbon nitride with strong adsorption towards lithium polysulfides for high-performance lithium-sulfur batteries)[J].材料科学技术(英文版),2022(20):140-147
A类:
tride,PTCN,todesigning
B类:
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AB值:
0.548788
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