生物质衍生硬炭组织结构与储钠性能的构效关系研究  

Structure-activity relationship between the structure of biomass derived hard carbon and its sodium storage performance

作　　者：宋皓炜 刘贤浩 刘冬旭 刘鹏[1] 高明珠 邓健秋[1] SONG Haowei;LIU Xianhao;LIU Dongxu;LIU Peng;GAO Mingzhu;DENG Jianqiu(School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学材料科学与工程学院,广西桂林541004

出　　处：《功能材料》2025年第3期3089-3094,共6页Journal of Functional Materials

基　　金：国家自然科学基金项目(52362029);广西自然科学基金项目(2019GXNSFDA245014);广西研究生教育创新计划项目(JGY2022121)。

摘　　要：通过研究一步炭化法制备的甘蔗渣和玉米秸秆衍生的硬炭材料,并探索这两种材料的组成、形貌、粒径以及孔径分布等组织结构对电化学性能的影响。研究表明玉米秸秆衍生硬炭材料具有更大的层间距、孔径和更小的粒径,从而展现出了更优的储钠性能。玉米秸秆硬炭材料在50 mA/g的电流密度下展现出了优异的电化学性能,其可逆容量达到了274 mAh/g;首次库伦效率高达89%;经100次循环后,容量保持率高达97%。值得指出的是在1000 mA/g电流密度下该材料也表现出217 mAh/g的可逆容量。The effects of the composition,morphology,particle size and pore size distribution on the electrochemical properties of bagasse and corn straw derived hard carbon materials prepared by one-step carbonization were investigated.The results show that the hard carbon material derived from corn stalk has larger layer spacing,smaller pore diameter and smaller particle size,which shows better sodium storage performance.The corn straw hard carbon material showed excellent electrochemical properties at the current density of 50 mA/g,and its reversible capacity reached 274 mAh/g and a high ICE of 89%.A good capacity retention of 97%after 100 cycles.It is worth pointing out that the material also exhibits a reversible capacity of 217 mAh/g at 1000 mA/g.

关 键 词：钠离子电池 负极 硬炭 结构 性能 

分 类 号：TM912[电气工程—电力电子与电力传动]