摘要
利用热磺化工艺和热处理工艺将废弃的涤纶面料转变成硬碳并作为负极材料,制备了锂离子电池。通过热重分析仪、X射线衍射仪和扫描电子显微镜等分析手段证实了涤纶面料变成了非晶态硬碳材料。热磺化工艺将聚酯(PET)链上的部分H原子转化为磺酸基(SO_(3)H)基团,热处理工艺将大部分杂质去除以生成大孔隙的碳。采用恒流充放电法对组装的锂离子电池进行测试,在0.1A/g的电流密度下,电池首次比容量达到437mAh/g,循环50次后,比容量保持在220mAh/g左右。利用废弃涤纶面料制备的锂离子电池负极材料电化学性能良好且制作成本低,为废弃聚酯回收再利用提供了新的思路。
The waste polyester fabric was converted into hard carbon by thermosulfonation and heat treatment to prepare lithium-ion battery.Thermogravimetric analyzer,X-ray diffractometer and scanning electron microscope were used to confirm that the polyester fabric had become an amorphous hard carbon material.The thermosulfonation process converted some H atoms in the PET chain to SO_(3)H(sulfonic acid)groups,and the heat treatment process removed most of the impurities to form large pores of carbon.Constant current charging-discharge method was used to test the assembled lithium-ion battery.Under the current density of 0.1 A/g,its first specific capacity reached 437 mAh/g.After 50 cycles,the specific capacity remained about 220 mAh/g.The cathode material for lithium-ion battery prepared from waste polyester fabric had good electrochemical performance and low production cost,which provided a new idea for recycling waste polyester.
作者
刘梦怡
李艳艳
李梦娟
葛明桥
Liu Mengyi;Li Yanyan;Li Mengjuan;Ge Mingqiao(Key Laboratory of Eco-Textile,Ministry of Education,Jiangnan University,Wuxi 214122;College of Textile Science and Engineering,Jiangnan University,Wuxi 214122)
出处
《化工新型材料》
CAS
CSCD
北大核心
2021年第12期264-268,共5页
New Chemical Materials
基金
国家自然科学基金青年基金(51903107)
江苏省自然科学基金青年基金(BK20190619)
中国博士后面上资助项目(2019M661724)
江苏省博士后基金科研资助项目(2019K107)
中国化学纤维工业协会绿宇基金资助项目(CCFA-LVYU-2019-03)
江南大学大学生创新训练计划(2020542X)。
关键词
废物处理
热磺化处理
非晶态硬碳材料
锂离子电池
负极材料
waste treatment
thermal sulfonation treatment
amorphous hard carbon material
lithium-ion battery
cathode material