High-performance, flexible, binder-free silicon–carbon anode for lithium storage applications
نویسندگان
چکیده
The development of flexible Li-ion batteries (LiBs) is important for applications in wearable devices, display systems, intelligent communication, and other electronics fields. Herein, we report a flexible, binder-free, [email protected]@carbon nanofiber ([email protected]2@CNF) anode fabricated by scalable electrospinning method novel “pre-oxidation–slicing–carbonization” process. Si nanoparticles (Si NPs) uniformly dispersed within the CNFs were coated with layers SiO2, leading to formation core–shell-structured protected] protected]2). Due introduction SiO2 coating, aggregation NPs was effectively inhibited, change volume could be confined during cycling, resulting enhanced structural cycling stability. Furthermore, interconnected conductive further increased overall conductivity, improved rate performance. More importantly, process ensures integrity edge electrode film. fiber film obtained can used directly as freestanding, binder-free material, which significantly simplifies fabrication reduces cost. protected]2@CNF composite retains excellent performance 903.7 mAh g−1 beyond 100 cycles at mA g−1, remarkable capacity 634.6 after 300 cycles. proposed facile synthesis means that this novel, Si/C should have practical next-generation, batteries.
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ژورنال
عنوان ژورنال: Electrochemistry Communications
سال: 2022
ISSN: ['1388-2481', '1873-1902']
DOI: https://doi.org/10.1016/j.elecom.2022.107257