Nickel and nickel oxide nanoparticle-embedded functional carbon nanofibers for lithium sulfur batteries
Rakhimbek I. Baikalov N. Konarov A. Mentbayeva A. Zhang Y. Bakenov Z.
6 December 2023Royal Society of Chemistry
Nanoscale Advances
2023#6Issue 2578 - 589 pp.
Lithium-sulfur (Li-S) batteries are attracting tremendous attention owing to their critical advantages, such as high theoretical capacity of sulfur, cost-effectiveness, and environment-friendliness. Nevertheless, the vast commercialisation of Li-S batteries is severely hindered by sharp capacity decay upon operation and shortened cycle life because of the insulating nature of sulfur along with the solubility of intermediate redox products, lithium polysulfides (LiPSs), in electrolytes. This work proposes the use of multifunctional Ni/NiO-embedded carbon nanofibers (Ni/NiO@CNFs) synthesized by an electrospinning technique with the corresponding heat treatment as promising free-standing current collectors to enhance the kinetics of LiPS redox reactions and to provide prolonged cyclability by utilizing more efficient active materials. The electrochemical performance of the Li-S batteries with Ni/NiO@CNFs with ∼2.0 mg cm−2 sulfur loading at 0.5 and 1.0C current densities delivered initial specific capacities of 1335.1 mA h g−1 and 1190.4 mA h g−1, retrieving high-capacity retention of 77% and 70% after 100 and 200 cycles, respectively. The outcomes of this work disclose the beneficial auxiliary effect of metal and metal oxide nanoparticle embedment onto carbon nanofiber mats as being attractively suited up to achieve high-performance Li-S batteries.
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National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
Department of Chemical and Materials Engineering, Nazarbayev University, Astana, 010000, Kazakhstan
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
National Laboratory Astana
Department of Chemical and Materials Engineering
Dalian Institute of Chemical Physics
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