PPy@FeOOH/CFs纸基柔性电极的原位制备与性能研究  

Study on In Situ Preparation and Performance of PPy@FeOOH/CFs Paper-based Flexible Electrode

作　　者：窦天佑 钱学仁[1] 安显慧[1] DOU Tianyou;QIAN Xueren;AN Xianhui(Key Lab of Bio-based Materials Science and Technology of Ministry of Education,Northeast Forestry University,Harbin,Heilongjiang Province,150040)

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《中国造纸》2021年第5期1-9,共9页China Pulp & Paper

基　　金：国家自然科学基金资助项目(编号:31770620)。

摘　　要：本研究以纤维素纤维(CFs)为基底,通过两步原位沉积法,先后在CFs基底上沉积了羟基氧化铁(FeOOH)和聚吡咯(PPy)制得PPy@FeOOH/CFs纸基柔性电极材料(PFC),通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)及X射线光电子能谱仪(XPS)等对纸基柔性电极材料进行了表征,表明PFC成功制备。在0.6 mol/L的H_(2)SO4中,通过循环伏安法(CV)、恒流充放电(GCD)和电化学阻抗谱(EIS)对制备的PFC电化学性能进行测试。发现相较于PPy@CFs,PFC拥有更快的电子转移和离子扩散速度以及更高的电化学储能性能。其中以添加量3 mmol的FeSO4·7H_(2)O作为铁源生成的PFC-3在1.0 A/g电流密度下的质量比电容为357.8 F/g,高于同等条件下PPy@CFs的比电容219.3 F/g,具有更优异的电化学性能,此外PFC-3在电流密度为4.0 A/g时质量比电容为0.5 A/g时的47.47%,而电流密度为4.0 A/g时,PPy@CFs质量比电容仅为0.5 A/g时的29.57%,PFC-3表现出更好的倍率性能和应用潜力。Using cellulose fibers(CFs)as the substrate,PPy@FeOOH/CFs(PFC)flexible paper-based electrode material was prepared by two-step in situ deposition of FeOOH and polypyrrole(PPy)successively on the CFs substrate.The paper-based electrode was characterized by SEM,XRD,FT-IR and XPS,which proved PFC was successfully preparated.The electrochemical performances of the PFC paper-based electrode in 0.6 mol/L H_(2)SO4 aqueous solution were measured by Cyclic voltammetry(CV),galvanostatic charge-discharge(GCD)and electrochemical impedance spectroscopy(EIS).The results showed that PFC had faster migration of electrons and diffusion of ions as well as higher electrochemical energy storage performance compared with [e-mail] the current density was 1.0 A/g,the specific capacitance of PFC prepared with 3 mmol FeSO4·7H_(2)O as the iron source was 357.8 F/g,which was higher than 219.3 F/g of PPy@CFs,indicating PFC-3 had better electrochemical performance and greater application potential in flexible energy storage devices.In addition,the mass ratio capacitance of PFC-3 at 4.0 A/g current density was 47.47%of 0.5 A/g,while PPy@CFs was only 29.57%of 0.5 A/g at 4.0 A/g current density.PFC-3 showed better electrochemilal performance and application potential.

关 键 词：纸基电极 原位沉积法 羟基氧化铁 聚吡咯 

分 类 号：TS76[轻工技术与工程—制浆造纸工程]