纳微快报（英文）2021，Vol.13Issue(10)：98-112,15.
Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li–S Batteries
Porous Carbon Architecture Assembled by Cross?Linked Carbon Leaves with Implanted Atomic Cobalt for High?Performance Li–S Batteries
摘要
Abstract
The practical application of lithium–sulfur batteries is severely hampered by the poor conductivity, polysulfide shuttle effect and sluggish reaction kinetics of sulfur cathodes. Herein, a hierarchically porous three-dimension (3D) carbon architecture assembled by cross-linked carbon leaves with implanted atomic Co–N4 has been delicately developed as an advanced sulfur host through a -SiO2-mediated zeolitic imidazolate framework-L (ZIF-L) strategy. The unique 3D architectures not only provide a highly conductive network for fast electron transfer and buffer the volume change upon lithiation–delithiation process but also endow rich interface with full exposure of Co–N4 active sites to boost the lithium polysulfides adsorption and conversion. Owing to the accelerated kinetics and suppressed shuttle effect, the as-prepared sulfur cathode exhibits a superior electrochemical performance with a high reversible specific capacity of 695 mAh -g?1 at 5 Cand a low capacity fading rate of 0.053％ per cycle over 500 cycles at 1 C. This work may provide a promising solution for the design of an advanced sulfur-based cathode toward high-performance Li–S batteries.关键词
Single-atom Co/3D porous carbon architecture/Cathode/Lithium–sulfur batteryKey words
Single-atom Co/3D porous carbon architecture/Cathode/Lithium–sulfur battery引用本文复制引用
Ruirui Wang,Hongge Pan,Renbing Wu,Chaofan Ding,Ziliang Chen,Hongbin Xu,Yongfeng Liu,Jichao Zhang,Yuan Ha,Ben Fei..Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li–S Batteries[J].纳微快报（英文）,2021,13(10):98-112,15.基金项目
This work was financially supported by the National Natural Science Foundation of China(Grant Nos.51871060,52071084 and 51831009),Recruit Program of Global Youth Experts and Fudan's Undergraduate Research Opportunities Program(FDUROP).The authors also would like to thank the staff at Beamlines BL14W1 and BL15U1 of the Shanghai Synchrotron Radiation Facility(SSRF,China)for providing the beam time. （Grant Nos.51871060,52071084 and 51831009）
