Crack‐Resistant Si‐C Hybrid Microspheres for High‐Performance Lithium‐Ion Battery Anodes

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 1, 2024

Abstract To effectively solve the challenges of rapid capacity decay and electrode crushing silicon‐carbon (Si‐C) anodes, it is crucial to carefully optimize structure Si‐C active materials enhance their electron/ion transport dynamic in electrode. Herein, a unique hybrid microsphere Si/C/CNTs/Cu with surface wrinkles prepared through simple ultrasonic atomization pyrolysis calcination method. Low‐cost nanoscale Si waste embedded into carbon matrix, cleverly combined flexible electrical conductivity nanotubes (CNTs) copper (Cu) particles, enhancing both crack resistance kinetics entire material. Remarkably, as lithium‐ion battery anode, fabricated exhibits stable cycling for up 2300 cycles even at current 2.0 A g −1 , retaining ≈700 mAh retention rate 100% compared started . Additionally, when paired an NCM523 cathode, full cell 135 after 100 1.0 C. Therefore, this synthesis strategy provides insights design long‐life, practical anode micro/nano‐spherical structures.

Language: Английский

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Silicon-graphite composite anode materials with assembly structure by boron oxide auxiliary for high-performance lithium-ion batteries

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146075 - 146075

Published: March 1, 2025

Language: Английский

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Sustainable Carbon‐Based Catalyst Materials Derived From Lignocellulosic Biomass for Energy Storage and Conversion: Atomic Modulation and Properties Improvement

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

Published: March 20, 2025

ABSTRACT Carbon electrocatalyst materials based on lignocellulosic biomass with multi‐components, various dimensions, high carbon content, and hierarchical morphology structures have gained great popularity in electrocatalytic applications recently. Due to the catalytic deficiency of neutral atoms, usage single lignocellulosic‐based electrocatalysis involving energy storage conversion presents unsatisfactory applicability. However, atomic‐level modulation lignocellulose‐based can optimize electronic structures, charge separation, transfer processes, so forth, which results substantially enhanced performance carbon‐based catalysts. This paper reviews recent advances rational design as electrocatalysts from an perspective, such self/external heteroatom doping metal modification. Then, through systematic discussion principles reaction mechanisms catalysts, prepared catalysts rechargeable batteries are reviewed. Finally, challenges improving prospects diverse review contributes synthesis strategy via modulation, turn promotes lignocellulose valorization for conversion.

Language: Английский

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Hierarchical Porous Structured Si/C Anode Material for Lithium‐Ion Batteries by Dual Encapsulating Layers for Enhanced Lithium‐Ion and Electron Transports Rates

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Silicon (Si) is a promising anode material for next-generation lithium-ion batteries (LIBs) due to its high specific capacity and abundance. However, challenges such as significant volume expansion during cycling poor electrical conductivity hinder large-scale application. In this study, the multifunction of sodium polyacrylate (PAAS) utilized develop hierarchical porous silicon-carbon (Si/SiO

Language: Английский

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Computational insights into the application of V2NS2 monolayer as anode material for Li/Na/K alkali metal-ion batteries

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 109, P. 851 - 858

Published: Feb. 14, 2025

Language: Английский

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Novel strategies for constructing highly efficient silicon/carbon anodes: Chemical prelithiation and electrolyte post-treatment

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 688, P. 215 - 224

Published: Feb. 21, 2025

Language: Английский

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Facile Synthesis of a Novel High-Entropy Oxide-Si Nanocomposite by Electrostatic Spinning: A Promising Electrode Material for Lithium-Ion Batteries

Published: Jan. 1, 2025

Language: Английский

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Green, Scalable, and Solventless Conversion of Photovoltaic Silicon Waste to High-Performance Lithium-Ion Battery Anodes

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

Published: March 3, 2025

Language: Английский

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Preparing Carbon-Coated Copper Foil with a Low-Cost and Environmentally Friendly Carbon Slurry to Stabilize Silicon Anode for Lithium-Ion Battery

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

Published: March 18, 2025

Introducing a conductive carbon layer between the copper foil current collector and silicon active material effectively mitigates electrode damage battery capacity loss caused by uneven expansion. In this study, low-cost, environmentally friendly carbon-coated (CCF) is designed using zeolitic imidazolate framework 8-derived (ZPC) as source, polyethylenepyrrolidone (PVP) binder, deionized water solvent. The large surface area porosity of ZPC accommodate volume expansion silicon, thereby enhancing overall performance battery. bare experiences rapid decay, with failure occurring after just 75 cycles at 0.5 C. contrast, CCF maintains reversible 576.8 mAh/g even 200 cycles. demonstrates superior specific cycle stability in both rate cycling test. According to relaxation time distribution (DRT) analysis, porous on ensures excellent electrical contact Cu during cycling, facilitates uniform lithium insertion into prevents uncontrolled growth SEI layer, guarantees stable operation. This preparation process provides promising solution mitigate degradation

Language: Английский

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Thermal safety overview of silicon-carbon anode in lithium-ion batteries: Key parameters in determining the reactivity

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

Published: March 1, 2025

Language: Английский

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