聚吡咯包覆的硒化铁复合材料电极的制备及其电化学性能  

Preparation and Electrochemical Properties of Polypyrrole-Coated Iron Selenide Composite Electrodes

作　　者：何文良 曾紫涵 胡蓉 朱燕艳 方泽波[2] He Wenliang;Zeng Zihan;Hu Rong;Zhu Yanyan;Fang Zebo(College of Mathematics and Physics,Shanghai University of Electric Power,Shanghai 200090,China;School of Mathematical Information,Shaoring University,Shaoxing 312000,China)

机构地区：[1]上海电力大学数理学院,上海200090 [2]绍兴文理学院数理信息学院,浙江绍兴312000

出　　处：《微纳电子技术》2023年第2期228-234,共7页Micronanoelectronic Technology

基　　金：国家自然科学基金(51672172,51872186,51971128,52171185);上海市优秀学术/技术带头人计划(20XD1401800);上海市科委项目(19020501000);横向项目(H2021-271);微机电系统浙江省工程研究中心开放课题基金(MEMSZJERC2205)。

摘　　要：以普鲁士蓝(PB)作为前驱体,通过固相烧结法在氮气环境中制备FeSe_(2)材料,结合聚吡咯(PPy)优良的导电性能,利用原位氧化聚合法包覆聚吡咯,设计出了FeSe_(2)@PPy复合材料。在三电极体系中,以2 mol/L KOH溶液为电解液、FeSe_(2)@PPy复合材料为工作电极、Hg/HgO电极为参比电极,FeSe_(2)@PPy复合材料表现出了优良的电化学性能:在0.5 A·g^(-1)电流密度下的比电容高达1177 F·g^(-1)。同时也测量了FeSe_(2)@PPy复合材料电极的循环性能:在0.5 A·g^(-1)电流密度下,经过3000次充放电测试后比电容保持率为90.5%。电化学测试结果表明该复合材料在超级电容器应用方面具有一定的优势。With Prussian blue(PB)as the precursor,FeSe_(2)material was prepared in nitrogen by solid-phase sintering method.Combined with the excellent conductivity of polypyrrole(PPy),FeSe_(2)@PPy composite was designed by using in situ oxidation polymerization to coat polypyrrole.In the three-electrode system,with 2 mol/L KOH solution as the electrolyte,FeSe_(2)@PPy composite as working electrode and Hg/HgO electrode as reference electrode,FeSe_(2)@PPy composite shows excellent electrochemical performances.The specific capacitance is as high as 1177 F·g^(-1)at the current density of 0.5 A·g^(-1).And the cycling performance of FeSe_(2)@PPy composite electrode was also measured.At the current density of 0.5 A·g^(-1),the specific capacitance retention is 90.5%after 3000 charge/discharge tests.The electrochemical test results show that the composite material has advantages in the application of supercapacitors.

关 键 词：FeSe_(2)@PPy复合材料 聚吡咯(PPy) 三电极体系 水热法 纳米材料 

分 类 号：TB33[一般工业技术—材料科学与工程]