Performance degradation mechanisms and mitigation strategies of hard carbon anode and solid electrolyte interface for sodium-ion battery

Nano Energy, Journal Year: 2024, Volume and Issue: 128, P. 109920 - 109920

Published: June 28, 2024

Language: Английский

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Interlayer-expanded carbon anodes with exceptional rates and long-term cycling via kinetically decoupled carbonization

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101812 - 101812

Published: Jan. 1, 2025

Language: Английский

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Promoting Robust and Rapid Na‐Ion Storage of Molybdenum‐Based Sulfide via Rational Hetero and Hollow Structure Design

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

Published: March 3, 2025

Abstract Molybdenum disulfide (MoS 2 ), characterized by its two‐dimensional structure and high theoretical specific capacity, is considered a prospective anode of Na‐ion battery. However, the cycling rate capabilities are hampered sluggish charge transfer kinetics poor structural stability. To overcome issues, most efforts have been focused on optimizing MoS . Nevertheless, rationally designing that can present rapid durable storage while ensuring large remains challenges. Herein, /MnS heterostructure featuring sphere‐like hollow morphology designed according to Ostwald ripening process Kirkendall effect. This construction effectively establish an interfacial built‐in electric field activated MnS , which exhibit P‐type N‐type semiconductor characteristics, respectively, thereby promoting electrochemical kinetics. Moreover, excellent stability after repeated (de)sodiation processes remarkably achieved thanks robust design, significantly achieving outstanding tolerance changes. Consequently, delivers capacity (594.8 mAh g −1 at 0.1 A superior performance (up 100 ultrastable capability (30 000 cycles with ≈81.4% retention). The work affords effective optimization tactic develop high‐performance conversion‐type electrodes for alkali‐ion batteries.

Language: Английский

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Structure Engineering on Prussian Blue Analog Anode Toward Rapid Na‐Ion Storage

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

Published: Dec. 31, 2024

Abstract Developing high‐rate electrode materials is a critical enabler of fast‐charging Na‐ion battery (NIB). Prussian blue analog (PBA) with rapid charge transfer channels has shown significant potential as NIB cathodes; however, the capability reported PBA‐based anodes remains limited. This challenge primarily stems from complete transformation their original crystal structures during synthesis processes, resulting in loss inherent channels. Herein, Ni‐Fe based PBA (Ni 3 [Fe(CN) 6 ] 2 ) representative structure presented prototype to investigate its anode, and structural modification strategies are implemented unlock storage. First, conversion reaction mechanism demonstrated Ni sodiation, theoretical specific capacity 357.2 mAh g −1 . However, reversible capacities after long‐term cycling at high rates low. To address these issues, optimization including S incorporation, configurational entropy modulation, coordination environment regulation utilized. Consequently, (≈40 s per 245.0 input) excellent capabilities realized. study demonstrates feasibility anodes, promotes further investigation into aimed developing other electrodes.

Language: Английский

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Effect of pre-treatment conditions on the electrochemical performance of hard carbon derived from bio-waste

RSC Advances, Journal Year: 2025, Volume and Issue: 15(2), P. 1105 - 1114

Published: Jan. 1, 2025

This study examined the effect of pretreatment on hard-carbon from coffee waste for sodium-ion batteries. Pre-oxidation at 150 °C showed 304 mA h g − ¹ capacity and enhanced cycling stability.

Language: Английский

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Improving sodium ion storage performance by heteroatom strategy with nitrogen and sulfur doping carbon sheets

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 111, P. 115412 - 115412

Published: Jan. 14, 2025

Language: Английский

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Ultra-micropores of hard carbons for ultrafast Na-ion storage

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A hard carbon with concentrated ultra-micropore sizes of 0.4–0.8 nm is prepared by a protonation-mediated strategy, which enables high plateau capacity and rate capability for sodium-ion batteries toward energy power densities.

Language: Английский

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Synergistic Effect of Fluoroethylene Carbonate and Propylene Carbonate on the Calendar Life of Silicon-Based Lithium-Ion Batteries

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

Published: March 13, 2025

Language: Английский

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Hollow carbon nanofibers with self-induced internal electric field for high-performance full-carbon sodium ion capacitors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157145 - 157145

Published: Oct. 1, 2024

Language: Английский

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Balancing Defects and Microcrystals in Carbon Anodes by Molecular Chemistry Method for Sodium‐Ion Batteries

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

Published: Nov. 28, 2024

Abstract Carbon materials with large capacity and low potential serve as promising anode for sodium‐ion batteries (SIBs). defects offer active sites sodium storage but sacrifice reversibility, whereas carbon microcrystals improve conductivity may suffer from capacity. Herein, the balance between is realized by molecular chemistry method of cross‐linking defect repairing. Real‐time spectroscopic analyses reveal that decomposition tetrabromophthalic anhydride (TBPA) molecule induces dehydrogenation pitch to release small gas molecules form pseudo‐closed pores, followed C═O bonds in TBPA dehydrogenated C─O─C thus suppress excessive microcrystal growth. Meanwhile, products can also react repair defects. Thanks microstructure balance, as‐synthesized material exhibits a smoother ion mass transfer channel ( d (002) = 0.386 nm, L 4.56 nm) larger space V pore 0.086 cm 3 g −1 ) than (PC, 0.349 5.90 0.041 ), increasing 162.5 336.5 mAh . This work sheds chemical light on regulating advanced SIBs.

Language: Английский

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