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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In-depth insight into the effects of oxygen vacancies on the excellent Li+-storage performances of Cu2Nb34O87-x/N-doped carbon composite

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 686, P. 1043 - 1054

Published: Feb. 6, 2025

Language: Английский

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Rheological modeling and optimization of Si-SWCNT anode slurry coatings for enhanced capacity and stability in lithium-ion batteries

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120080 - 120080

Published: Feb. 1, 2025

Language: Английский

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Research Progresses on Nano-Structured Silicon-Based Materials as Anode for Lithium-Ion Batteries

Materials, Journal Year: 2025, Volume and Issue: 18(4), P. 830 - 830

Published: Feb. 14, 2025

Silicon-based materials are considered the most promising next-generation anode for lithium-ion batteries due to their high theoretical specific capacity, rich reserves, and advantages of low discharge potential. However, significant volume expansion silicon during cycling process leads detachment active substances loss electrical contact between current collector, ultimately resulting in a decline battery performance. Nanostructured anodes have surface area, short diffusion path, ability effectively alleviate electrode material circulation. Therefore, how rationally design nanostructured silicon-based is currently one research hotspots. This article first reviews evaluates disadvantages microstructured nano-structured rate performance, discusses cycle stability volumetric energy density, summarizes lithium storage mechanism materials, with focus on influence some silicon/carbon composites conductive polymers silicon/metal electrochemical properties materials. Finally, suggestions prospects future development proposed.

Language: Английский

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A High-Modulus Dual-Cross-Linked Shell Promoting Phosphorus–Carbon Composites for Stable and High-Rate Lithium Ion Storage

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Phosphorus is considered an ideal anode material for lithium ion storage by virtue of its high theoretical capacity and moderate lithiation potential. However, issues such as large volume expansion phosphorus leading to electrical loss contact instability the solid electrolyte interface hinder practical performance. Improvement strategies that can effectively suppress provide stable contacts are urgently needed. Herein, introduction a carbon nanotube cross-linked microstructure into polyimide coating layer, high-modulus layer constructed fast conductive network. The prepared dual-cross-linked phosphorus–carbon composites exhibit excellent cycling stability high-rate After 500 cycles at current density 1 A g–1, it still specific 1467.68 mAh with retention rate 87.28%. And even 10 1450.72 g–1.

Language: Английский

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Improving silicon anode durability through uniform dispersion and binding enhancement with polyacrylamide-grafted carbon nanotubes

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

Published: March 12, 2025

Silicon (Si) anodes offer a high specific capacity (> 3,500 mA h g-1), but severe volume changes during cycling and poor intrinsic conductivity hinder commercialization. Carbon nanotubes (CNTs) are commonly incorporated to improve the electronic of Si electrodes, their tendency aggregate in polar solvent-based slurries leads non-uniform electrodes. To address this, we synthesize polyacrylamide-grafted CNTs (PAM-g-CNTs) by covalently attaching hydrophilic acrylamide monomers CNT surfaces. The PAM chains provide steric hindrance that minimizes van der Waals interactions between PAM-g-CNTs interacts effectively with solvents, thus promoting uniform dispersion forming stable electron-conductive network within electrode. Furthermore, establish hydrogen bonds particles binder matrices, enhancing structural integrity performance half cells incorporating shows substantial durability after 200 cycles. Moreover, high-energy-density electrode configurations reduced conductive agent ratios (active material > 70%), PAM-g-CNT-based preserved 70% initial 100 cycles, compared only 20% retention Super P-based cells. functionalization proves effective improving stability while reinforcing cohesion. This strategy presents promising path for developing durable lithium-ion batteries.

Language: Английский

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Progress in Computational Methods and Mechanistic Insights on the Growth of Carbon Nanotubes

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

Published: Jan. 1, 2025

Advancements in modern computational tools reveal key CNT growth mechanisms and pave the way for targeted synthesis scalable production.

Language: Английский

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Instant-healing hydrogel-based triboelectric nanogenerator fornon-contact sensing and energy harvesting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161803 - 161803

Published: March 1, 2025

Language: Английский

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Coherent Interface Design in Sintered GeO₂@Sn-MOF for High-Performance Lithium-Ion Anodes

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180054 - 180054

Published: March 1, 2025

Language: Английский

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Constructing Asymmetric SiO_x/C Janus Structures with Diverse Carbon Density Frameworks Enables Electrochemical Stability

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

Published: April 8, 2025

Abstract The main challenges limiting the practical application of silicon‐based anode materials are volume fluctuations during cycling and poor intrinsic conductivity. One most effective strategies to address these limitations is incorporation carbon into silicon composites. However, few studies have investigated impact diverse density frameworks on electrochemical performance, primarily due associated with structural construction. Herein, an anisotropic nucleation growth strategy employed control behavior organosilane surface nanospheres by modulating hydrolysis environment, successfully constructing asymmetric SiO x /C Janus structures frameworks, including assembly nanosphere region (BSC) cubic‐ rod‐shaped regions (ESC). mechanisms ESC also investigated. exploration structure reveals that BSC has a denser framework, while exhibits sparse framework. Electrochemical performance confirms material dense framework superior behavior, maintaining capacity 464.4 mA h g −1 after 500 cycles. Among them, porous uniform contribute both stability.

Language: Английский

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