Molecular Engineering to Regulate the Pseudo‐Graphitic Structure of Hard Carbon for Superior Sodium Energy Storage

Small, Год журнала: 2024, Номер 20(34)

Опубликована: Апрель 9, 2024

Abstract Resin‐derived hard carbons have shown great advantages in serving as promising anode materials for sodium‐ion batteries due to their flexible microstructure tunability. However, it remains a daunting challenge rationally regulate the pseudo‐graphitic crystallite and defect of carbon toward advanced sodium storage performance. Herein, molecular engineering strategy is demonstrated modulate cross‐linking degree phenolic resin thus optimize carbon. Remarkably, resorcinol endows with moderate degree, which can finely tune structure enlarged interlayer spacing restricted surface defects. As consequence, optimal delivers notable reversible capacity 334.3 mAh g −1 at 0.02 A , high initial Coulombic efficiency 82.1%, superior rate performance 103.7 2 excellent cycling durability over 5000 cycles. Furthermore, kinetic analysis situ Raman spectroscopy are performed reveal electrochemical advantage mechanism. This study fundamentally sheds light on design resin‐based advance energy scale‐up applications.

Язык: Английский

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Insight into the effect of structural differences among pitch fractions on sodium storage performance of pitch-derived hard carbons

Carbon, Год журнала: 2024, Номер 226, С. 119165 - 119165

Опубликована: Апрель 23, 2024

Язык: Английский

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

Nano Energy, Год журнала: 2024, Номер 128, С. 109920 - 109920

Опубликована: Июнь 28, 2024

Язык: Английский

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Molecular engineering of pore structure/interfacial functional groups toward hard carbon anode in sodium-ion batteries

Energy storage materials, Год журнала: 2025, Номер 75, С. 104008 - 104008

Опубликована: Янв. 9, 2025

Язык: Английский

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Hyper‐Crosslinking to Customize Ultrathin‐Wall Closed Pores in Pitch‐Derived Carbon for Sodium‐Ion Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Abstract Pitch is a highly preferable and cost‐effective precursor of carbon materials. Nevertheless, its direct pyrolysis typically yields graphitized soft carbon, posing challenges to the modulation closed‐pore architecture, due intense intermolecular π–π interactions. This results in negligible plateau capacity sluggish diffusion kinetics sodium‐ion batteries (SIBs). In this study, an innovative hyper‐crosslinking strategy proposed reconstruct pitch molecularly precisely tailor structure derived carbon. The crosslinker intertwined units, transforming linear molecules into 3D porous polymers. Structurally, these cavities tactfully reserved space for forming cores, with single‐layer network skeleton ultrathin pore walls upon carbonization. enabled disruption interactions and, therefore, inhibited structural ordering, facilitating transition from graphitic highly‐disordered abundant closed pores featuring appropriate sizes (2 nm) (1–2 layers). optimal sample delivered high 370 mAh g −1 at 30 mA , as well rate capability that surpassed those most previously reported pitch‐derived carbons. Hyper‐crosslinking has advanced development low‐cost high‐performance materials large‐scale energy storage.

Язык: Английский

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ICE optimization strategies of hard carbon anode for sodium-ion batteries: from the perspective of material synthesis

Materials Futures, Год журнала: 2024, Номер 3(3), С. 032102 - 032102

Опубликована: Июль 1, 2024

Abstract With the continuous exploration of researchers in field sodium-ion batteries, performance these batteries has been greatly improved, and they have a wide range application prospects large-scale energy storage, traffic power other fields. Hard carbon is most important anode material for batteries. Although it advantages low cost, stable structure performance, still problems initial Coulombic efficiency (ICE) poor rate application. In order to solve problem ICE hard recent years literature about comprehensively reviewed. Based on microstructure material, causes are analyzed. At same time, from point view design regulation, current optimization strategies summarized, including following aspects: improvement carbonization process, precursor screening design, surface coating strategy, micro-pore control, catalytic strategy. We hope that this review will provide reference further properties its

Язык: Английский

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Advanced hard carbon materials for practical applications of sodium-ion batteries developed by combined experimental, computational, and data analysis approaches

Progress in Materials Science, Год журнала: 2024, Номер unknown, С. 101401 - 101401

Опубликована: Окт. 1, 2024

Язык: Английский

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Innovative Synthesis and Sodium Storage Enhancement of Closed-Pore Hard Carbon for Sodium-Ion Batteries

Energy storage materials, Год журнала: 2024, Номер 74, С. 103867 - 103867

Опубликована: Окт. 28, 2024

Язык: Английский

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Ultrafast laser carbonization endowing high defect density in porous carbon electrode for tunable nitrogen-doping towards high performance sodium storage

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160456 - 160456

Опубликована: Фев. 1, 2025

Язык: Английский

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Ameliorating the sodium storage performance of hard carbon anode through rational modulation of binder

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103796 - 103796

Опубликована: Сен. 1, 2024

Язык: Английский

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