Recycling spent masks to fabricate flexible hard carbon anode toward advanced sodium energy storage

Gao, Yuyang; Hou, Zhidong; Jiang, Mingwei; Lei, Da; Zhang, Xiang; Zhang, Yu; Wang, Jian-Gan

doi:10.1016/j.jelechem.2023.117525

Journal of Electroanalytical Chemistry

2023

DOI: 10.1016/j.jelechem.2023.117525

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Recycling spent masks to fabricate flexible hard carbon anode toward advanced sodium energy storage

Yuyang Gao,

Zhidong Hou,

Mingwei Jiang

et al.

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2024

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Cited by 2 publications

References 56 publications

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

Zhang,

Hou,

Jiang

et al. 2024

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

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

Zhang,

Hou,

Jiang

et al. 2024

Small

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From macro to micro: Biomass-derived advanced carbon microtube assembly for sodium-ion batteries

Yang,

Yin,

Yang

et al. 2024

Nano Energy

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Recycling spent masks to fabricate flexible hard carbon anode toward advanced sodium energy storage

Cited by 2 publications

References 56 publications

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

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

From macro to micro: Biomass-derived advanced carbon microtube assembly for sodium-ion batteries

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