NiCo2S4 nanoparticles embedded in nitrogen-doped carbon nanotubes networks as effective sulfur carriers for advanced Lithium–Sulfur batteries
Song Y. Wang Z. Yan Y. Zhao W. Bakenov Z.
March 2021Elsevier B.V.
Microporous and Mesoporous Materials
2021#316
To enhance the electrochemical performance of Li–S battery, a composite sulfur cathode was designed by doping sulfur onto N-doped carbon nanotubes with metal sulfide particles attached to their surface. This designing approach allowed performing high sulfur loading in the cathode, while maintaining prominent stability and good charge/discharge capacity. The results showed that at a sulfur loading of 2.1 mg cm−2, the cell with S/NiCo2S4/N-CNT cathode delivered an average discharge capacity of 998 mA h g−1 at 0.1C, and preserved an excellent discharge capacity of 713 mA h g−1 at a high current density of 1 C. At the same time, the cell demonstrated high stability and reversibility delivering a capacity of 950 mA h g-l when current density reduced back again to 0.1C. Furthermore, the S/NiCo2S4/N-CNT cathode showed a steady capacity of 915 mA h g−1 at 0.2C over 100 cycles.
Lithium-sulfur batteries , NiCo2S4 , Nitrogen doping , Sulfur carrier
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School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China
Department of Chemical and Materials Engineering, National Laboratory Astana, Nazarbayev University, 010000, Nur-Sultan, Kazakhstan
Institute of Batteries LLP, 010000, Nur-Sultan, Kazakhstan
School of Materials Science and Engineering
Department of Chemical and Materials Engineering
Institute of Batteries LLP
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