柚子皮基钠离子电池硬碳孔结构的调控及其储钠性能研究
Regulating pore structure of shaddock peel-based hard carbon for sodium ion battery and study on sodium storage performance
张京涛 1吉闫 1左宇程 1邹飞杨 1葛志清 1陈召勇1
作者信息
- 1. 长沙理工大学材料科学与工程学院,湖南 长沙 410114
- 折叠
摘要
以氧化镁为模板,将葡萄糖酸镁和柚子皮粉混合低温预烧生成碳复合材料的前驱体,并进一步通过高温碳化制备多孔结构硬碳材料.通过XRD、SEM、FT-IR、XPS和BET对复合材料进行表征分析,表明氧化镁作为模板制备了具有明显多孔结构的柚子皮基硬碳.对组装的钠离子电池进行循环伏安(CV)、电化学阻抗(EIS)及电化学充放电测试,结果表明,在 30 mA/g的电流密度下,电池放电容量达到 400 mAh/g.
Abstract
Using magnesium oxide as a template,magnesium gluconate and shaddock peel powder are mixed and pre-calcined at low temperature to form the precursor of carbon composite materials,which is further carbonized at high temperature to obtain porous structured hard carbon materials.The composite is characterized through XRD,SEM,FT-IR,XPS and BET analysis,and it is proved that shaddock peel-based hard carbon with obvious porous structure is prepared with magnesium oxide as the template.Through cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS),and electrochemical charging and discharging tests,it is found that the discharge capacity of the battery can reach 400 mAh·g-1 under a current density of 30 mA·g-1.
关键词
硬碳/多孔结构/钠离子电池/模板法Key words
hard carbon/porous structure/sodium ion battery/template method引用本文复制引用
基金项目
国家自然科学基金面上项目(51874048)
国家自然科学基金青年基金项目(21905278)
出版年
2024
NETL
NSTL
万方数据