Flexible TiO2-TiSe2/Carbon Nanofiber Membrane Towards Enhancing the Rate Performance of Li/S Batteries

doi:10.7503/cjcu20250340

Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (7): 20250340.doi: 10.7503/cjcu20250340

• Articles: Inorganic Chemistry • Previous Articles Next Articles

Flexible TiO₂-TiSe₂/Carbon Nanofiber Membrane Towards Enhancing the Rate Performance of Li/S Batteries

DANG Yuxin, QIN Xiaoxi, ZHANG Peng, MA Tianshu, XUE Jiayi, WANG Chao, WU Tong(), ZHANG Yingying(), ZHUANG Quan, LIU Jinghai()

Inner Mongolia Key Laboratory of Solid State Chemistry and Battery，Inner Mongolia Engineering Research Centre of Lithium?Sulfur Battery Energy Storage，College of Chemistry and Materials Science，Inner Mongolia Minzu University，Tongliao 028000，China

Received:2025-11-07 Online:2026-07-10 Published:2025-12-17
Contact: WU Tong, ZHANG Yingying, LIU Jinghai E-mail:wutong932@imun.edu.cn;zhangyingying@imun.edu.cn;jhliu2015@imun.edu.cn
Supported by:
the National Natural Science Foundation of China(22361035,22461030);the Natural Science Foundation of Inner Mongolia Autonomous Region, China(2024QN02013);the Inner Mongolia Grassland Talent Program-Young Leading Talents, China(KYCYYC24001,KYCYYC25002);the Autonomous Region-level Institution Talent Introduction and Scientific Research Start-up Performance Project, China(RCQD20002);the Doctoral Scientific Research Fund of Inner Mongolia Minzu University, China(KYQD21002,KYQD23005);the Basic Scientific Research Operating Expenses Project of Directly Affiliated Universities in Inner Mongolia Autonomous Region, China(GXKY25Z009);the Innovation Team Program of Universities in Inner Mongolia Autonomous Region, China(NMGIRT2417);the Innovation Platform Construction Project of Key Laboratories in Inner Mongolia Autonomous Region, China(KJJH2402,SYS25003);the Key Joint Project of Natural Science Foundation of Inner Mongolia Autonomous Region, China(2025ZDLH004);the Open Fund of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, China(25-11);the Open Project of the Lithium-Sulfur Battery Energy Storage Engineering Research Center of Inner Mongolia Autonomous Region, China(MDK2024057)

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Abstract

Abstract:

Lithium-sulfur batteries have attracted much attention due to their advantages such as high theoretical energy density and abundant cathode active material resources. Howfever， the severe lithium polysulfide shuttle effect and slow electrochemical conversion kinetics have seriously hindered the development of high energy density and high multiplicity performance lithium-sulfur batteries. To solve the above problems， a flexible conductive TiO₂-TiSe₂/carbon nanofibre membrane（TiO₂-TiSe₂/CNF） was prepared and placed between the anode side and the diaphragm of lithium-sulfur batteries as a membrane reactor to regulate the lithium-sulfur conversion. The results showed that the strong adsorption of lithium polysulfide on the TiO₂-TiSe₂ active sites effectively suppressed the shuttle effect， and the carbon nanofibre network accelerated the transport of ions and electrons to enhance the reaction kinetics. The TiO₂-TiSe₂/CNF membrane reactor modulated lithium-sulfur battery had an initial discharge specific capacity of 1305.7 mA∙h/g at 0.1C， 684.7 mA∙h/g at 5C multiplicity， and the discharge specific capacity was maintained at 795.4 mA∙h/g after 200 cycles at 1C.

Key words: TiO₂-TiSe₂ carbon nanofiber membrane, Lithium-sulfur battery, High-rate performance, Membrane reactor, Lithium-sulfur reaction kinetics

CLC Number:

O611

TrendMD:

DANG Yuxin, QIN Xiaoxi, ZHANG Peng, MA Tianshu, XUE Jiayi, WANG Chao, WU Tong, ZHANG Yingying, ZHUANG Quan, LIU Jinghai. Flexible TiO₂-TiSe₂/Carbon Nanofiber Membrane Towards Enhancing the Rate Performance of Li/S Batteries[J]. Chem. J. Chinese Universities, 2026, 47(7): 20250340.

Figures/Tables 4

References 37

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Flexible TiO₂-TiSe₂/Carbon Nanofiber Membrane Towards Enhancing the Rate Performance of Li/S Batteries

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