Super P and MoO2/MoS2 co-doped gradient nanofiber membrane as multi-functional separator for lithium-sulfur batteries

Xin Liang ¹Dong-Qing Zhao ¹Qian-Qian Huang ¹Sheng Liang ¹Li-Li Wang ¹Lei Hu ¹Ling-Li Liu ¹Kun-Hong Hu ¹Chong-Hai Deng ¹Sheng Cheng ²Er-Tao Zhu ³Hua-Xia Deng⁴

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作者信息

1. School of Energy Materials and Chemical Engineering,LIB Technology Center of Anhui Province,Hefei University,Hefei 230601,China
2. Instrumental Analysis Centre,Hefei University of Technology,Hefei 230009,China
3. Hefei Youngy Energy Materials Co.,Ltd.,Hefei 230000,China
4. Department of Modern Mechanics,University of Science and Technology of China,Hefei 230026,China
折叠

Abstract

Lithium-sulfur battery is one of the most promising battery systems for industrialization due to its high theoretical specific capacity and high energy density.Nonetheless,the"shuttle effect"has restrained the advancement of lithium-sulfur batteries.In this work,a gradient-structured nanofiber membrane with pure gelatin on one side and Super P-MoO2/MoS2-gelatin on the other side was created using a multi-step electrostatic spinning technique,which was applied for multi-functional separa-tor for lithium-sulfur batteries.The pure gelatin layer facing the anode side primarily homogenizes the lithium flux,whereas the Super P-MoO2/MoS2-gelatin layer facing the cathode side primarily adsorbs polysulfides by physical and chemical adsorption and enhancing polysulfide conversion efficiency.The findings demonstrate that even after 150 cycles at 0.2C,the lithium-sulfur battery can still sustain a discharge-specific capacity of 572.3 mAh-g-1.When used with Li||Li symmetric batteries,it has a cycle life of more than 1200 h.The commercialization of lithium-sulfur batteries is given a fresh idea by this straightforward preparation technique.

Key words

MoO2/MoS2/Nanofiber/Membrane/Li-S battery

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基金项目

Anhui Provincial Natural Science Foundation(2208085ME108)

Anhui Provincial Natural Science Foundation(1708085QE98)

Anhui Provincial Natural Science Foundation(2008085QE27)

University Synergy Innovation Program of Anhui Province(GXXT-2023-024)

Project for Cultivating Academic(or Disciplinary)Leaders(DTR2023043)

Talent Scientific Research Foundation of Hefei University(23RC29)

National Natural Science Foundation of China(21606065)

National Natural Science Foundation of China(51902079)

University Natural Science Research Project of Anhui Province(KJ2021A1016)

University Natural Science Research Project of Anhui Province(2022AH051788)

University Natural Science Research Project of Anhui Province(2022AH051792)

Natural Science Research Project of Education Department of Anhui Province(2022AH010096)

University excellent talent program of Anhui Province(gxyqZD2021136)

University excellent talent program of Anhui Province(qxyq2021228)

Top Discipline Talents Foundation of Anhui Province Educational Committee(gxbjZD2021085)

Key Projects of Research and Development Program of Anhui Provence(201904b11020040)

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量2

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