摘要
MXene具有与金属材料相似的能带结构,并表现出良好的导电性能。但是MXene极易发生层状堆积,影响MXene材料的电化学性能。本研究拟采用MXene和椰壳碳在去离子水中混合制备MXene复合材料,研究其结构和形态对其电化学性质的影响。研究结果表明,加入到MXene薄膜中的可溶性椰壳炭,通过粒子之间的相互渗透对锂离子的迁移起到促进作用。对该材料进行了充放电实验结果表明,采用质量配比1∶2的材料,在电流密度0.1 A/g条件下,其首次充放电比容量可以达到1951.7 m Ah/g,经过200次循环后,其充放电比容量为800.8 m Ah/g。
MXene has a band structure similar to metallic materials and exhibits good conductivity.However,MXene is prone to layered stacking,which affects the electrochemical performance of MXene materials.This study aims to prepare MXene composite materials by mixing MXene and coconut shell carbon in deionized water,and investigate the effects of its structure and morphology on its electrochemical properties.The research results indicate that soluble coconut shell charcoal added to MXene films promotes the migration of lithium ions through interpenetration between particles.The charging and discharging experiments were conducted on the material,and the results showed that using a 1:2 mass ratio of material,under a current density of 0.1 A/g,its initial charging and discharging specific capacity can reach 1 951.7 m Ah/g.After 200 cycles,its charging and discharging specific capacity is 800.8 m Ah/g.
作者
张洋洋
Zhang Yangyang(Henan Chemical Technician College,Kaifeng Henan 475000,China)
出处
《山西化工》
CAS
2024年第5期15-17,共3页
Shanxi Chemical Industry
关键词
MXene
椰壳炭
电化学性能
MXene
coconut shell charcoal
electrochemical performance
作者简介
张洋洋,女,1991年出生,毕业于大连工业大学,硕士学位,助理讲师,研究方向为分析化学。
