Ultrastable Monodisperse Resin‐Based Spherical Si─C Materials With Micropore Confined Growth of Silicon Nanoclusters for Lithium‐Ion Battery Anodes

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract Monodisperse spherical silicon‐carbon (Si/ASC) composites are developed as high‐performance anodes for lithium‐ion batteries (LIBs). The synthesized by combining phenolic resin‐derived carbon spheres with chemical vapor deposition (CVD) to uniformly deposit silicon within the matrix. micropore nanoconfinement effectively mitigates silicon's volume expansion during cycling, enhancing electrochemical stability. Si/ASC composite retains 93.3% of its initial capacity after 800 cycles in half‐cell testing and 46.7% 500 full‐cell testing. In situ analysis shows minimal expansion, confirming stability composite. These findings highlight potential a promising anode material high‐energy‐density, long‐cycle‐life LIBs.

Language: Английский

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Eco-Efficient, Nonacidic Etched and Cost-Effective Micron-Sized Porous Si–C Anodes for High-Performance Li-Ion Batteries

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Language: Английский

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Stacked hollow carbon nanospheres enhance the performance of micro silicon negative electrode in lithium-ion batteries

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112530 - 112530

Published: April 1, 2025

Language: Английский

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Self-Supporting Sn-Based Carbon Nanofiber Anodes for High-Performance Lithium-Ion Batteries

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1740 - 1740

Published: April 13, 2025

Due to its high theoretical specific capacity, abundant resources, accessibility and environmental friendliness, Sn has been considered as a promising alternative lithium-ion batteries (LIBs) anodes. However, anodes still face great challenges such huge volume change low conductivity. Herein, self-supporting Sn-based carbon nanofiber anode for high-performance LIBs was prepared. nanoparticles with capacity were uniformly embedded in nanofibers, which not only mitigated the expansion of nanoparticles, but also obtained composite nanofibers excellent mechanical properties by adjusting ratio polyacrylonitrile polyvinylpyrrolidone, exhibiting electrochemical performance. The optimal (Sn-SnO2/CNF-2) showed discharge 607.28 mAh/g after 100 cycles at current density 500 mA/g. Even 200 cycles, Sn-SnO2/CNF-2 maintained 543.78 original fiber structure well, demonstrating good long-term cycling stability. This indicated that had potential advanced energy storage.

Language: Английский

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Mesoporous carbon/silicon composites via template-free method for lithium-ion battery anodes

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 645, P. 237075 - 237075

Published: April 29, 2025

Language: Английский

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