CJCU

Chem. J. Chinese Universities

• Article • Previous Articles     Next Articles

Flexible TiO2-TiSe2/carbon nanofibre membranes to enhance the multiplicity performance of lithium/sulfur batteries

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

  1. Inner Mongolia Key Laboratory of Solid State chemistry for Battery; Inner Mongolia Engineering Research Centre of Lithium-Sulfur Battery Energy Storage, College of Chemistry and Materials Science, Inner Mongolia Minzu University
  • Received:2025-11-07 Revised:2025-12-09 Online First:2025-12-17 Published:2025-12-17
  • Contact: Liu Jinghai E-mail:jhliu2015@imun.edu.cn
  • Supported by:
    Supported by National Natural Science Foundation of China (Grant Nos. 22361035, 22461030); Natural Science Foundation of Inner Mongolia Autonomous Region (Grant No. 2024QN02013); Inner Mongolia Grassland Talent Program – Young Leading Talents (Grant Nos. KYCYYC24001, KYCYYC25002); Autonomous Region-level Institution Talent Introduction and Scientific Research Start-up Performance Project (Grant No. RCQD20002); Doctoral Scientific Research Fund of Inner Mongolia Minzu University (Grant Nos. KYQD21002, KYQD23005); Basic Scientific Research Operating Expenses Project of Directly Affiliated Universities in Inner Mongolia Autonomous Region (Grant No. GXKY25Z009); Innovation Team Program of Universities in Inner Mongolia Autonomous Region (Grant No. NMGIRT2417); Innovation Platform Construction Project of Key Laboratories in Inner Mongolia Autonomous Region (Grant Nos. KJJH2402, SYS25003); Key Joint Project of Natural Science Foundation of Inner Mongolia Autonomous Region (Grant No. 2025ZDLH004); Quality Improvement and Cultivation Discipline of Inner Mongolia Autonomous Region (Chemistry); Open Fund of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (Grant No. 25-11); Open Project of the Lithium-Sulfur Battery Energy Storage Engineering Research Center of Inner Mongolia Autonomous Region (No. MDK2024057)

PDF (PC)

Supplement

1

Abstract: Lithium-sulfur batteries have garnered significant attention due to their substantial advantages, including high theoretical energy density and abundant cathode active material resources. However, severe lithium polysulphide shuttle effects and sluggish electrochemical conversion kinetics significantly impede the development of lithium-sulfur batteries with high energy density and high-rate performance. To address these challenges, a flexible conductive TiO2-TiSe2/carbon nanofibre (TiO2-TiSe2/CNF) membrane was fabricated. Positioned between the cathode and separator in lithium-sulfur batteries as a membrane reactor, it regulates lithium-sulfur conversion. Experiments demonstrate that the strong adsorption of lithium polysulphides by TiO2-TiSe2 active sites effectively suppresses the shuttle effect, while the nano-carbon fibre network accelerates ion and electron transport, enhancing reaction kinetics. Results indicate that the TiO2-TiSe2/CNF membrane reactor modulated lithium-sulfur battery achieved an initial discharge specific capacity of 1305.7 mAh/g at 0.1C, a discharge capacity of 684.7 mAh/g at 5C, and maintained a discharge capacity of 795.4 mAh/g after 200 cycles at 1C.

Key words: TiO2-TiSe2 nanofiber membrane reactor, Lithium-sulfur battery, High magnification performance, membrane reactor, lithium-sulfur reaction kinetics

CLC Number: 

TrendMD: