新型炭材料（中英文）2025，Vol.40Issue(2)：346-354,9.DOI:10.1016/S1872-5805(25)60954-1
盐辅助水热法制备硬炭材料及其储钠性能
Hard carbons prepared by a salt-assisted hydrothermal method as anodes for the sodium-ion battery
摘要
Abstract
Hard carbons,with a high sodium storage capacity,low voltage plateau,and excellent cycling stability,have emerged as one of the most promising anode materials for sodium-ion batteries.Because their pore structure has a significant impact on their sodium storage performance,its control is key for improving the battery performance.We used β-cyclodextrin as the carbon source to prepare various hard carbon materials with different micropore structures using a sodium chloride-as-sisted hydrothermal carbonization strategy,and studied their performance as a function of the sodium chloride concentration.Characterization using XRD,Raman spectroscopy,and high-resolution TEM indicated that changing the sodium chloride con-centration changed the pore structure and the closed pore volume.Given the sodium chloride concentration was 2 mol L-1,the hard carbon material(CD-2)had the highest degree of disorder and the largest graphite microcrystals,as well as the largest closed pore volume together with a gradient pore structure.Electrochemical tests indicate that CD-2 had a high specific capa-city of 360 mAh g-1 and an initial Coulombic efficiency of 90.2%at 0.02 A g-1.This simple carbonization technique provides an effective way for controlling the closed pore structure in hard carbon materials,thus improving the battery performance.关键词
硬炭/钠离子电池/负极/β-环糊精/水热法Key words
Hard carbon/Sodium-ion batteries/Anode/β-cyclodextrin/Hydrothermal method分类
信息技术与安全科学引用本文复制引用
刘朔,周威,宋雪旦,于畅,邱介山..盐辅助水热法制备硬炭材料及其储钠性能[J].新型炭材料（中英文）,2025,40(2):346-354,9.基金项目
感谢国家重点研发计划项目(2022YFB4101602) （2022YFB4101602）
国家自然科学基金项目(22478065,U24B20198). National Key Research and Development Program Project(2022YFB4101602) （22478065,U24B20198）
National Natural Science Found-ation of China Project(22478065,U24B20198). （22478065,U24B20198）
