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• W4308102318 abstract "Micro-nano Si-C anodes prepared by spraying method using solar silicon waste, delivered a remarkable electrochemical performance and good application potential. • 1. Kilogram-scale fabrication of micro-nano Si-coated graphite composite via industrial sand-milling and spray-drying using disused solar-panels and commercial graphite. • 2. The scalability and low-cost silicon/graphite sources used in this fabrication route significantly reduce the total cost of Si-C materials. • 3. The TiO 2 /pyrolytic-carbon and Si-nanoflakes form a porous hierarchical coating layer in composites, alleviating the electrode stress changes and facilitating a stable SEI-film formation. • 4. The Gr@Si/C/TiO 2 ||NCM811 pouch full cell can provide energy densities of 277.03 Wh kg -1 . At present, developing a simple strategy to effectively solve the shackles of volume expansion, poor conductivity and interface compatibility faced by Si-C anode in lithium batteries (LIBs) is the key to its commercialization. Here, low-cost nano-Si powders were prepared from Si-waste of solar-cells by sanding treatment, which can effectively reduce the commercialization cost for Si-C anode. Furthermore, micro-nano structured Gr@Si/C/TiO 2 anode materials with graphite (Gr) as the inner core, TiO 2 -doped and carbon-coated Si as the outer coating-layer, were synthesized at kilogram-scale per milling batch. Comprehensive characterization results indicate that TiO 2 -doped carbon layer can improve the interface compatibility with the electrolyte, further promote the reduction of electrode polarization, and finally enhance the battery performance for the Gr@Si/C/TiO 2 anodes. Accordingly, Gr@Si/C/TiO 2 composites can output excellent LIB performance, especially with high initial coulombic efficiency (ICE) of 82.51% and large average reversible capacity of ∼810 mA h g −1 at 0.8 A g −1 after 1000 cycles. Moreover, Gr@Si/C/TiO 2 ||NCM811 pouch full cells deliver impressive performance especially with high energy density of ∼489.3 W h kg −1 based on the total weight of active materials, suggesting its promising application in the high performance LIBs." @default.
• W4308102318 created "2022-11-08" @default.
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• W4308102318 date "2023-02-01" @default.
• W4308102318 modified "2023-10-16" @default.
• W4308102318 title "Scalable synthesized high-performance TiO2-Si-C hybrid anode for lithium batteries" @default.
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• W4308102318 doi "https://doi.org/10.1016/j.jechem.2022.10.044" @default.
• W4308102318 hasPublicationYear "2023" @default.
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