Microstructure and Sodium Storage Performance of Biopolymers-derived Hard Carbon
LIU Dongxu1, SONG Haowei1, LIU Peng1, YAO Qingrong1, WANG Zhongmin2, DENG Jianqiu1,*
1 School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China 2 Institute of High-performance Materials, Guangxi Academy of Sciences, Nanning 530012, China
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.
刘冬旭, 宋皓炜, 刘鹏, 姚青荣, 王仲民, 邓健秋. 天然生物聚合物衍生硬炭材料的微观结构与储钠性能[J]. 材料导报, 2025, 39(16): 24070125-6.
LIU Dongxu, SONG Haowei, LIU Peng, YAO Qingrong, WANG Zhongmin, DENG Jianqiu. Microstructure and Sodium Storage Performance of Biopolymers-derived Hard Carbon. Materials Reports, 2025, 39(16): 24070125-6.
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