碳化鸡蛋膜/碳纳米管/二氧化锰复合材料的制备与性能  

Synthesis of Carbonized Eggshell Membrane/Carbon Nanotubes/Manganese Dioxide Composite and Their Performances

作　　者：李思博[1] 何明宏 刘玉兰[1] 李亮[1] LI Sibo;HE Minghong;LIU Yulan;LI Liang(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430205

出　　处：《武汉工程大学学报》2020年第4期401-405,共5页Journal of Wuhan Institute of Technology

基　　金：湖北省2019年省级大学生创新创业训练计划项目(S201910490033)。

摘　　要：以天然鸡蛋膜(ESM)为基底,制备了一种具有良好电容性能的碳化鸡蛋膜/碳纳米管(CNTs)/二氧化锰(MnO2)(cESM/CNTs/MnO2)复合材料电极。首先将CNTs吸附到ESM上,通过碳化得到cESM/CNTs,再将其与高锰酸钾(KMnO4)通过氧化还原反应,在cESM/CNTs上生成MnO2纳米颗粒,最终得到cESM/CNTs/MnO2复合材料。采用X射线衍射、扫描电子显微镜表征复合材料的微观形貌与结构,通过循环伏安法和计时电位法测试了c ESM/CNTs与KMnO4的质量比不同时制备得到的c ESM/CNTs/MnO2复合材料的电化学性能。实验结果表明:在当c ESM/CNTs与KMnO4的质量比为1∶4时,c ESM/CNTs/MnO2复合材料展现出优异的电容性能,并且在扫描1 000圈后,复合材料的容量保持率高达93.4%。We prepared a carbonized eggshell membrane/carbon nanotubes/manganese dioxide(cESM/CNTs/MnO2)composite materials as the supercapacitor with high performances using the natural eggshells membrane(ESM)as the substrate. The CNTs were firstly adsorbed on the ESM,followed by the carbonization to form cESM/CNTs. Then,MnO2 was immobilized on c ESM/CNTs via the reaction between KMnO4 and carbon to obtain cESM/CNTs/MnO2 composite. X-ray diffraction and scanning electron microscopy were conducted to characterize the morphology and structure of the composite materials. The electrochemical properties of cESM/CNTs/MnO2 composite materials with different mass ratios of cESM/CNTs and KMnO4 were tested by using cyclic voltammetry and chronopotentiometry. The results show that cESM/CNTs/MnO2 composite materials exhibit excellent electrical properties when the mass ratio of cESM/CNTs and KMnO4 is 1∶4. The composite exhibits high capacity retention rate of up to 93.4% after 1 000 cycles.

关 键 词：碳化鸡蛋膜 碳纳米管 二氧化锰 复合材料 电极 

分 类 号：O633[理学—高分子化学]