Design and Functionalization of Lignocellulose‐Derived Silicon‐Carbon Composites for Rechargeable Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract Silicon/carbon (Si/C) composites present great potential as anode materials for rechargeable batteries since the integrate high specific capacity and preferable cycling stability from Si C components, respectively. Functional Si/C based on lignocellulose have attracted wide attention due to advantages lignocellulose, including sustainability property, flexible structural tunability, diverse physicochemical functionality. Although flourishing development of boosts studies lignocellulose‐derived with electrochemical performance, publications that comprehensively clarify design functionalization these high‐profile are still scarce. Accordingly, this review first systematically summarizes recent advances in after a brief clarification about selection sources self extraneous sources. Afterward, strategies, nanosizing, porosification, magnesiothermic reduction material well heteroatom modification material, specifically highlighted. Besides, applications Si/C‐based elaborated. Finally, discusses challenges prospects application energy storage provides nuanced viewpoint regarding topic.

Language: Английский

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SiO_x Based Anodes for Advanced Li‐Ion Batteries: Recent Progress and Perspectives

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract SiO x with high theoretical capacity is regarded as a promising high‐performance anode material for lithium‐ion batteries. The main problem the dramatic volume expansion after lithiation and inherent poor conductivity. Tackling these problems, extensive strategies are proposed ‐based materials in order to pursue initial Coulombic efficiency, reversible capacity, long cycle stability. In this review, lithium storage mechanism, merits, disadvantages of will be introduced detail. Significant progress about recent years their detailed summarized. Finally, challenges potential solutions development application proposed. This review aims offer reference research associated good guide further improvements materials.

Language: Английский

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Constructing micron-sized Porous silicon-carbon anode with stable MgF2 conductive armor towards high-performance lithium-ion batteries

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 111578 - 111578

Published: Jan. 1, 2025

Language: Английский

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Stress-Relief Engineering in a N-Doped C-Modified Hierarchical Nanoporous Si Anode with a Microcurved Pore Wall Structure for Enhanced Lithium Storage

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(10), P. 12924 - 12938

Published: March 1, 2024

The commercialization of alloy-type anodes has been hindered by rapid capacity degradation due to volume fluctuations. To address this issue, stress-relief engineering is proposed for Si that combines hierarchical nanoporous structures and modified layers, inspired the phenomenon in which with continuous changes curvature can reduce stress concentration. N-doped C-modified anode a microcurved pore wall (N-C@m-HNP Si) prepared from inexpensive Mg-55Si alloys using simple chemical etching heat treatment process. When used as lithium-ion batteries, N-C@m-HNP exhibits initial charge/discharge specific capacities 1092.93 2636.32 mAh g-1 at 0.1 C (1 = 3579 mA g-1), respectively, stable reversible 1071.84 after 200 cycles. synergy porous structure layer effectively improves electrochemical performance Si, effectiveness quantitatively analyzed through theory elastic bending thin plates. Moreover, formation process Li15Si4 crystals, causes substantial mechanical stress, investigated first-principles molecular dynamic simulations reveal their tendency occur different scales. results demonstrate helps inhibit transformation amorphous LixSi into metastable crystals during lithiation.

Language: Английский

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High-Performance Porous pSi/Ag@C Anode for Lithium-Ion Batteries

Processes, Journal Year: 2024, Volume and Issue: 12(5), P. 1021 - 1021

Published: May 17, 2024

Silicon represents one of the most attractive anode materials in lithium-ion batteries (LIBs) due to its highest theoretical specific capacity. Thus, there is a urgent need prepare Si-based nano very efficient way and develop some reasonable approaches for their modification order resolve short-falls Si anodes, which include both low conductivity huge volume changes during intercalation lithium ions. In this work, kerf loss silicon (KL Si) from photovoltaic industry has been used as an inexpensive source preparation porous silicon/silver/carbon composite (pSi/Ag@C) material. Porous was embedded with Ag particles via Ag-catalyzed chemical etching process, providing additional space accommodate large expansion silicon. After carbon coating polymerization tannic acid on surface pSi/Ag, high-speed conductive network over built contributed enhancing electrochemical performance anode. The pSi/Ag@C electrode discharge capacity maintained at stable value 665.3 mAh g−1 after 100 cycles under 0.5 A exhibited good rate performance. Therefore, study recommends that method promising producing material LIBs KL Si.

Language: Английский

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Enabling the Transport Dynamics and Interfacial Stability of Porous Si Anode Via Rigid and Flexible Carbon Encapsulation for High‐Energy Lithium Storage

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

Published: Oct. 21, 2024

Abstract The stable electrode/electrolyte interface and fast electron/ion transport channel play important roles in boosting the rate performance cycling life of lithium‐ion batteries. Herein, a porous silicon/carbon composite (pSi@PC@MC) is presented by integrating hollow silicon (pSi) with pitch‐derived carbon (PC) dopamine‐derived mesoporous (MC), employing microporous zeolite as source. finite element simulation first reveals stress release effect rigid flexible encapsulation on Si anode for storage. In situ ex characterization results further elucidate that hybrid sp 2 /sp 3 coating greatly enhances liquid/solid stability compatibility electrolyte, well facilitates transmission dynamics, achieving uniform, stable, LiF‐rich SEI film, ultimately improving lithium storage performance. As expected, as‐designed pSi@PC@MC delivers an impressive capability (756.6 mAh g −1 at 6 A ) excellent capacity 1650 after 300 cycles 0.2 . Meanwhile, pSi@PC@MC//NCM811 full‐cell exhibits outstanding (75.8% retention 100 cycles). This study highlights significance rational design effective development fast‐charging Si/carbon anodes.

Language: Английский

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Regeneration of photovoltaic industry silicon waste toward high-performance lithium-ion battery anode

Rare Metals, Journal Year: 2024, Volume and Issue: 43(10), P. 4948 - 4960

Published: June 6, 2024

Language: Английский

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Elucidating the role of embedding dispersed cobalt sites in nitrogen-doped carbon frameworks in Si-based anodes for stable and superior storage

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 98, P. 180 - 195

Published: June 21, 2024

Language: Английский

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Synergy effects of phosphogypsum on the hydration mechanism and mechanical properties of alkali-activated slag in polysilicon sludge solidification

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 456, P. 139386 - 139386

Published: Nov. 28, 2024

Language: Английский

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Single-step conversion of low-grade magnesite to anhydrous MgCO3 based on a biodegradable salicylic acid chelating system: Characterization; DFT calculations; mechanism

Applied Surface Science, Journal Year: 2024, Volume and Issue: unknown, P. 162029 - 162029

Published: Dec. 1, 2024

Language: Английский

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