基于二氧化锰/聚(5-醛基吲哚)复合材料的超级电容器  

Supercapacitor Based on Manganese Dioxide/Poly(5-formylindole)Composite

作　　者：邓许坤 聂广明 Deng Xukun;Nie Guangming(Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学化学与分子工程学院光电传感与生命分析教育部重点实验室,山东青岛266042

出　　处：《山东化工》2024年第17期1-5,共5页Shandong Chemical Industry

基　　金：国家自然科学基金项目(51973102)。

摘　　要：利用电化学方法分两步制备了二氧化锰/聚(5-醛基吲哚)(MnO_(2)/P5FIn)纳米复合材料,以该材料组装了超级电容器并测试了其性能。MnO_(2)通过在电极上施加恒定负电位进行电沉积,P5FIn则是通过循环伏安法进行电聚合制备。为了得到具有最优电化学性能的MnO_(2)/P5FIn电极,对P5FIn电聚合过程中的循环伏安圈数进行了优化,并在0.2 mol·L^(-1)的氯化钾溶液中对复合材料电极进行了电化学测试。结果表明,该电极的最大比电容可达4.31 mF·cm^(-2)。以凝胶电解质组装了基于该复合材料的超级电容器,其最大比电容可达3.80 mF·cm^(-2),拥有较好的循环稳定性。该研究通过一种低成本的方法,对MnO_(2)的储能能力进行了改善,为过渡金属氧化物基超级电容器的研制提供了一种简单可行的思路。Manganese dioxide/poly(5-formylindole)(MnO_(2)/P5FIn)nanocomposites were prepared by a simple electrochemical method in two steps,supercapacitor based on composite material was assembled and its performance was tested.MnO_(2)is electrodeposited by applying a constant negative potential to the electrode,while P5FIn is electropolymerized by cyclic voltammetry.In order to obtain the MnO_(2)/P5FIn electrode with the best electrochemical performance,the number of cyclic voltammetry cycles of P5FIn electropolymerization was optimized.The electrochemical test of the composite electrode was carried out in 0.2 mol·L^(-1)potassium chloride solution.The results showed that the maximum specific capacitance of the electrode can reach 4.31 mF·cm^(-2).The supercapacitor based on composite material is assembled with gel electrolyte.The maximum specific capacitance of the supercapacitor can reach 3.80 mF·cm^(-2),and the device has good cycle stability.This study has improved the energy storage capacity of MnO_(2)by a low-cost method,which provides a simple and feasible idea for the development of transition metal oxide-based supercapacitors.

关 键 词：超级电容器 电极材料 二氧化锰 聚(5-醛基吲哚) 电化学合成 

分 类 号：TQ251.3[化学工程—有机化工] TM53[电气工程—电器]