Wood-derived closed pore hard carbon encapsulated micro-sized silicon anode design for long-term practical lithium-ion battery

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160846 - 160846

Published: Feb. 1, 2025

Language: Английский

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Optimization of Silicon Pore Structure by Metal-Assisted Chemical Etching and Carbonization to Engineer Silicon-Based Anode with the Long Cycle Stability

Published: Jan. 1, 2025

Language: Английский

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High-Performance Anode Material for Lithium-Ion Batteries Comprising Carbon-Coated Silicon-Graphite with a Specified Structure

Advances in Analytical Chemistry, Journal Year: 2025, Volume and Issue: 15(01), P. 108 - 122

Published: Jan. 1, 2025

Language: Английский

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Nanoporous Graphene with Encapsulated Multicomponent Carbide as High‐Performance Binder‐Free Lithium‐Ion Battery Anodes

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

Published: March 13, 2025

Abstract Metal carbides are considered attractive lithium‐ion battery (LIB) anode materials. Their potential practical application, however, still needs nanostructure optimization to further enhance the Li‐storage capacity, especially under large current densities. Herein, a nanoporous structured multi‐metal carbide is designed, which encapsulated in 3D free‐standing nanotubular graphene film (MnNiCoFe‐MoC@NG). This composite with high surface area not only provides more active Li + storage sites but also effectively prevents agglomeration or detachment of material traditional powder‐based electrodes. Moreover, design does require additional binders, conductive agents, even collectors when used as LIB anode. As result, MnNiCoFe‐MoC@NG exhibits specific capacity 1129.2 mAh g −1 at 2 A and maintains stable 512.9 after 2900 cycles 5 , higher than most reported Mo x C‐based anodes. Furthermore, superb low‐temperature performance both 0 −20 °C, These properties make very promising fast charging applications.

Language: Английский

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Porous carbon nanoflakes constructed from anthracite-derived aromatic fragments as efficient anode for lithium-ion storage

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 118, P. 116268 - 116268

Published: March 17, 2025

Language: Английский

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Constructing an enhanced charge-mass transfer passage for silicon anodes to achieve increased capacity under high-rate conditions

Energy Materials, Journal Year: 2025, Volume and Issue: 5(8)

Published: April 28, 2025

Silicon (Si) holds promise as an anode material for next-generation lithium-ion batteries due to its high theoretical capacity. However, practical applications are impeded by structural damage from volume expansion. Here, we designed a novel Si/CNFs/C integrating mesoporous Si particles, carbon nanofibers (CNFs), and quantum dots into three-dimensional (3D) architecture via one-step magnesiothermic reduction process. This design significantly enhances both electron ion conductivity, alleviates the expansion of ensures mechanical stability during battery operation. Consequently, with exhibit reversible capacity 1,172.4 mAh g-1 after 200 cycles at 0.1 A maintain 1,107.7 1,000 1 g-1. Notably, current density g-1, remains nearly comparable that 100 attributed significant pseudocapacitive characteristics facilitate performance under elevated densities. Furthermore, employed distribution relaxation times analysis alongside other electrochemical techniques investigate changes in transport pathways evolving role energy storage Our provide valuable insights optimizing 3D conductive architectures understanding dynamic mechanisms Si-based anodes, advancing development high-performance batteries.

Language: Английский

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Balancing Pore Development and Mechanical Strength for High-Performance Silicon-Porous Carbon Anodes in Lithium-Ion Batteries

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145468 - 145468

Published: Dec. 1, 2024

Language: Английский

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