Magnetron-sputtering MoS2 on carbon paper and its application as interlayer for high-performance lithium sulfur batteries

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 823; pp. 537 - 544
• Main Authors: Li, Jie, Jiang, Yongjia, Qin, Furong, Fang, Jing, Zhang, Kai, Lai, Yanqing
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.08.2018
• Subjects: Interlayer; Lithium-sulfur batteries; Magnetron sputtering; MoS2; Sulfur loading; Lithium-sulfur batteries; Magnetron sputtering; Interlayer; MoS2; Sulfur loading
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2018.07.006

Marked by high energy density and low material cost, lithium sulfur batteries are considered to be one of the most promising energy storage devices. However, the poor electrochemical performance impedes their practical application. In this work, MoS2 is decorated on carbon nanotubes paper (CNTP) through magnetron sputtering technique to fabricate interlayers for high-performance lithium sulfur batteries. Due to the catalysis of MoS2 on the conversion of sulfur species, lithium sulfur batteries present enhanced electrochemical performance. The initial discharge capacity reaches 1233 mA h g−1 and maintains 850 mA h g−1 after 100 cycles at 0.5C even the sulfur loading is about 3.4 mg cm−2. In addition, the coulombic efficiency is over 96% among all 100 cycles. •The carbon nanotube interlayer has been modified with molybdenum sulfide thin film by magnetron sputtering.•MoS2 can catalyze the polysulfide conversion in Li-S batteries.•The sulfur loading of Li-S batteries reaches about 3.4 mg cm−2.•The Li-S batteries with CNTP/MoS2 interlayer show excellent electrochemical performance.