Simultaneously manipulating carbon coating layers and void structures in silicon/carbon anode materials via bifunctional templates for lithium-ion batteries

Applied Surface Science, Journal Year: 2024, Volume and Issue: 655, P. 159538 - 159538

Published: Jan. 29, 2024

Language: Английский

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Scalable Synthesis of a Si/C Composite Derived from Photovoltaic Silicon Kerf Waste toward Anodes for High-Performance Lithium-Ion Batteries

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(6), P. 5568 - 5579

Published: March 8, 2024

The solid waste from solar photovoltaic (PV) systems diverges carbon neutrality targets and the core principles of clean energy. Herein, we present an innovative cost-effective strategy to fabricate P-SKW@C as anode materials based on natural properties submicron silicon kerf (SKW) by increasing surface oxide layer combining synergistic effects magnesium thermal acid leaching. In particular, establishes channels for electron ion transport, thereby enhancing conductivity mobility lithium ions. formation pores leaching provides buffer space accommodate volume changes in silicon, ensuring structural integrity electrode. Specifically, exhibits superior rate performance, reaching 1006 mAh g–1 at 2 A g–1, outstanding reversible capacity 1103 with current density returning 0.2 g–1. Furthermore, demonstrates a remarkable specific 905 500 mA over 200 cycles. Notably, assembled LiFePO4//P-SKW@C full cell maintains stable 105.96 energy 329.84 Wh kg–1 0.5 °C after 50 This work introduces new recycling SKW sustainable, economical, environmentally friendly way, facilitating integration storage.

Language: Английский

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Enhancing Interfacial Interactions Through Microwave‐Irradiated Reduction for the Recycling of Photovoltaic Silicon Waste for Lithium Storage

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract The application of micro‐nano size photovoltaic waste silicon (wSi) as an anode material for lithium‐ion battery holds significant practical potential; However, it faces a series challenges related to the volume expansion Si during cycling. In this study, simple, efficient, and eco‐friendly microwave method is proposed rapid preparation graphene‐coated materials (wSi@rGO) in just few seconds, which graphene stable interface mitigates structural failure caused by expansion, enhances electron ion conductivity, inhibits undesirable side reactions between electrolyte, promotes stability solid electrolyte (SEI). Importantly, instantaneous high temperature generated microwaves facilitates formation interfacial SiC chemical bonds, strengthen interaction graphene, thereby reducing delamination. wSi@rGO exhibits remarkable cycling stability, maintaining specific capacity 1100 mA h g −1 over 250 cycles. Furthermore, assembled wSi@rGO//LiFePO 4 full demonstrates robust performance, retaining 150 after 80 cycles at 0.5 C. This research not only straightforward efficient technique synthesizing materials, but also offers environmentally friendly economical pathway recycling silicon, contributing positively carbon peaking neutrality.

Language: Английский

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Constructing Silicon Nanosheet/Graphite Nanosheet Composite from Retired Photovoltaic Silicon as Lithium‐Ion Battery Anode

Energy Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

The huge materials and energy consumption flows in modern society bring enormous pressure to environment resource. Compared with production of silicon powder from natural resources via the long chain chemical engineering approaches high giant pollutants emission, direct use large amount waste retired photovoltaic devices is low cost, resources/energy saving property, environmental protection value. Herein, sand ground into nanosheets composited graphite followed by carbon wrapping obtain final composite anode materials. nanosheet/graphite nanosheet stacked structure within composite, which delivers electrons perpendicular planar interfaces short distance depresses internal stress accumulation separation nanosheet, along further nanophase amorphous phase SiO x provides good stability bulk during cyclic charge/discharge process.

Language: Английский

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Novel, Clean, and Controlled Method for Surface Oxidation of Photovoltaic Silicon Cutting Waste for High-Performance Si–C Anode Materials

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Language: Английский

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2D Si@SiOx derived from Si Ca alloy and ZnO via a solid state reaction for lithium ion batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 123, P. 116834 - 116834

Published: April 29, 2025

Language: Английский

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Multilayer boron doped Si@SiOx/C from Si-Ca alloy for lithium-ion battery anodes

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 90, P. 111960 - 111960

Published: May 11, 2024

Language: Английский

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Modification with graphite and sulfurized amorphous carbon for high-performance silicon anodes in lithium-ion batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 98, P. 113196 - 113196

Published: Aug. 9, 2024

Language: Английский

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Purification and preparation of pure SiC with silicon cutting waste

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 363, P. 121364 - 121364

Published: June 7, 2024

Language: Английский

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Modification with Graphite-Doped Sulfurized Amorphous Carbon for High-Performance Silicon Anodes in Lithium-Ion Batteries

Published: Jan. 1, 2024

Language: Английский

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