天然生物聚合物衍生硬炭材料的微观结构与储钠性能

doi:10.11896/cldb.24070125

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Abstract The biomass-derived hard carbon materials exhibit high reversible capacity, abundant resource, and low cost, making them promising anode candidates for commercial sodium-ion batteries (SIBs). In this work, three kinds of natural biopolymers (cellulose, hemicellulose, and lignin) have been utilized as raw materials to prepare hard carbon anode materials through a one-step carbonization method. X-ray diffraction (XRD) results indicated that the carbonized products of the three kinds of natural biopolymers formed amorphous hard carbon materials with highly disordered structures. Among them, the cellulose-derived hard carbon exhibited a rod-like microstructure with a specific surface area of 3.04 m²·g^-1 and an average pore diameter of 6.84 nm, which benefited its sodium ion storage. Consequently, the SIB anode made of the cellulose-derived hard carbon material demonstrated a charge capacity of 288.8 mAh·g^-1 at a current density of 50 mA·g^-1, with an initial Coulombic efficiency of 90.1%, and more particularly, maintained a charge capacity of 213.0 mAh·g^-1 after 500 charge-discharge cycles at 500 mA·g^-1, corresponding to a capacity retention of 86.6%. The present work may provide a technical inspiration for the development of high-performance biomass-derived hard carbon anodes for SIBs.

Key words： sodium-ion battery anode material hard carbon biopolymer electrochemical performance

Published: 15 August 2025 Online: 2025-08-15

CLC number:

TB39

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	Articles by authors
	LIU Dongxu
	SONG Haowei
	LIU Peng
	YAO Qingrong
	WANG Zhongmin
	DENG Jianqiu

Cite this article:

LIU Dongxu,SONG Haowei,LIU Peng, et al. Microstructure and Sodium Storage Performance of Biopolymers-derived Hard Carbon[J]. Materials Reports, 2025, 39(16): 24070125-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24070125 OR https://www.mater-rep.com/EN/Y2025/V39/I16/24070125

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