中国化学快报(英文版)2024，Vol.35Issue(6) ：161-167.DOI:10.1016/j.cclet.2023.109200

Integrated interconnected porous and lamellar structures realized fast ion/electron conductivity in high-performance lithium-sulfur batteries

Ya Song Mingxia Zhou Zhu Chen Huali Nie Jiao-Jing Shao Guangmin Zhou
中国化学快报(英文版)2024，Vol.35Issue(6) ：161-167.DOI:10.1016/j.cclet.2023.109200
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Integrated interconnected porous and lamellar structures realized fast ion/electron conductivity in high-performance lithium-sulfur batteries

Ya Song 1Mingxia Zhou 1Zhu Chen 2Huali Nie 3Jiao-Jing Shao 1Guangmin Zhou4
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作者信息

  • 1. School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China
  • 2. Medical College of Guizhou University,Guiyang 550025,China
  • 3. College of Biological Science and Medical Engineering,Donghua University,Shanghai 201620,China
  • 4. Shenzhen Geim Graphene Center,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China
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Abstract

The practical application of high-energy-density lithium-sulfur(Li-S)batteries have been highly praised for energy storage devices,while are largely hindered by the"shuttling effect".Herein,core-shell carbon spheres composed of interlinked porous core and lamellar shell were designed to restrain the polysulfide shuttling.The microporous structure with pore size of around 1 nm effectively trap lithium polysulfides.Furthermore,the interconnected porous core shortens the ion transfer distance and the lamellar carbon shell endows the carbon spheres with fast electron conduction,finally facilitating polysulfide conversion kinetics.Therefore,the Li-S batteries with the carbon spheres as the interlayer show high discharge spe-cific capacity of 1002mAh/g at 2C with 574mAh/g remaining after 600 cycles,and high areal capacity of 5.48 mAh/cm2 with sulfur loading of 4.67 mg/cm2 at 0.1 C.The corresponding pouch cells also exhibit stable cycling stability with an initial discharge specific capacity of 1082 mAh/g at 0.1 C.

Key words

Interlayer/Shuttle effect/Strong adsorption/Porous carbon spheres/Lithium-sulfur batteries

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基金项目

National Natural Science Foundation of China(51972070)

National Natural Science Foundation of China(52062004)

Guizhou Provincial High Level Innovative Talents Project(QKHPTRC-GCC[2022]013-1)

Innovation Team for Advanced Electrochemical Energy Storage Devices and Key Materials of Guizhou Provincial Higher Education Ins(QianJiaoJi[2023]054)

Guizhou Provincial Science and Technology Projects(QKHJC[2020]1Z042)

Cultivation Project of Guizhou University(GDPY[2019]01)

出版年

2024
中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
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