1. N-doped carbon-coated TiN nanotube as a sulfur host for Li-S battery.
- Author
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Ren, Haibo, Pan, Hui, Dong, Xumeng, Meng, Chunyu, Joo, Sang Woo, and Huang, Jiarui
- Subjects
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LITHIUM sulfur batteries , *DOPING agents (Chemistry) , *TITANIUM nitride , *SULFUR , *NANORODS , *TIN , *OXIDATION-reduction reaction , *TITANATES - Abstract
Shuttle effect and slow redox reactions in Li-S battery limit its commercial application. Herein, TiN nanotubes with N-doped carbon coating (TiN/N-C NT) were obtained via MoO 3 nanorod template-assistant hydrothermal method and followed by polydopamine coating and carbonization/nitriding. When used as sulfur host, the tubular structure buffers the volume change in lithiation process and shortens Li+ transfer route. Consequently, the TiN/N-C NT cathode exhibits a high capacity of 1010.3 mAh g−1 over 100 cycles at 0.1 A g−1. It provides a low capacity decay rate of 0.057 % per cycle over 500 cycles at a high current density of 1.0 A g−1. This study provides a promising method for preparing high-performance Li-S battery. • Special TiN nanotubes coated with N-doped carbon layer were developed. • It involves template-assistant hydrothermal method, PDA coating and carbonization/nitriding. • TiN/N-C nanotubes exhibit high stable capacity and superior rate performance. • High performance is due to thier hollow structure and strong LiPSs chemisorption. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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