Hollow silica-embedded dehydrogenated polyacrylonitrile fibers as anode for the next-generation lithium-ion batteries
Belgibayeva A. Kydyrbayeva U. Turarova G. Nurpeissova A. Kalybekkyzy S. Kurmanbayeva I. Mentbayeva A. Bakenov Z.
April 2025Elsevier Ltd
Materials Research Bulletin
2025#184
The current demand for higher energy density and faster charging batteries requires the development of advanced electrode materials for lithium-ion batteries (LIBs). Herein, we present synthesis of hollow silica-embedded dehydrogenated polyacrylonitrile (SiO2/DPAN/KB) fibers as a novel anode material for next-generation LIBs utilizing electrospinning with subsequent low-temperature dehydrogenation at 300 °C. The dehydrogenation process transforms PAN fibers into highly conductive carbonaceous material, further improving electrochemical performance of the anode. Electrochemical characterization reveals that compared to pristine hollow SiO2 and DPAN fibers, the SiO2/DPAN/KB fibers exhibit superior lithium storage properties, including high specific capacity, excellent cycling stability, retaining 940 mAh g−1 after 100 cycles at 0.1 A g−1, and superior specific capacity of 800 mAh g−1 after 300 cycles at a high current density of 1 A g−1. These findings highlight the potential of SiO2/DPAN/KB fibers as promising anode materials for next-generation LIBs, paving the way for the development of high-performance energy storage devices.
Anode , Dehydrogenated polyacrylonitrile , Electrospinning , Hollow structure , Silica
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National Laboratory Astana, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
Abai Kazakh National Pedagogical University, Abai Ave. 56v, Almaty, 050008, Kazakhstan
National Laboratory Astana
Department of Chemistry
Department of Chemical and Materials Engineering
Abai Kazakh National Pedagogical University
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