电沉积法制备聚(3,4-乙烯二氧噻吩)微米管及其在柔性全固态超级电容器的应用
Preparation by Electro-Deposition Method and Application in Flexible All-Solid-State Supercapacitors of Poly(3,4-ethylenedioxythiophene) Microtubes
作者单位E-mail
李会华 有机电子与信息显示国家重点实验室培育基地, 江苏省生物传感材料与技术重点实验室, 信息材料与纳米技术研究院
江苏先进生物与化学制造协同创新中心
南京邮电大学, 南京 210023 
 
葛优 有机电子与信息显示国家重点实验室培育基地, 江苏省生物传感材料与技术重点实验室, 信息材料与纳米技术研究院
江苏先进生物与化学制造协同创新中心
南京邮电大学, 南京 210023 
 
朱红丽 有机电子与信息显示国家重点实验室培育基地, 江苏省生物传感材料与技术重点实验室, 信息材料与纳米技术研究院
江苏先进生物与化学制造协同创新中心
南京邮电大学, 南京 210023 
 
冯晓苗 有机电子与信息显示国家重点实验室培育基地, 江苏省生物传感材料与技术重点实验室, 信息材料与纳米技术研究院
江苏先进生物与化学制造协同创新中心
南京邮电大学, 南京 210023 
iamxmfeng@njupt.edu.cn 
刘玉革 岭南师范学院化学化工学院, 湛江 524000 liuyugehb@126.com 
摘要: 通过一步电沉积方法制备了不同的酸介质和表面活性剂掺杂的聚(3,4-乙烯二氧噻吩)(PEDOT)微米管电极材料,并用其来制备柔性的全固态对称超级电容器。同时探究了沉积时间对相同的酸介质和表面活性剂掺杂的PEDOT微米管电容性能的影响。最终产物的结构通过各种表征技术进行表征,包括扫描电子显微镜(SEM)和FT-IR光谱。电化学结果表明,用硫酸(H2SO4)和十二烷基硫酸钠(SDS)掺杂的PEDOT微米管的电容性能明显提升。用沉积时间为600 s的PEDOT微米管所制备的超级电容器的面积比电容在10 mV·s-1的扫速下达到113.5 mF·cm-2。在不同的弯曲角度下,该固态的对称超级电容器的面积比电容仍保持初始电容值的93%,表明其具有较高的柔性。此外,在电流密度为0.6 mA·cm-2的条件下经过2 000次循环后,其电容值几乎保持初始电容值的95.5%,显示出优异的循环稳定性。制备出来的柔性全固态超级电容器可点亮LED灯,表明其能够满足微电源的实际应用。
关键词: 电沉积  固态  柔性  超级电容器
基金项目: 国家自然科学基金青年基金(No.21505155)资助项目。
Abstract: Poly(3,4-ethylenedioxythiophene) (PEDOT) microtube electrodes doped with different acids and surfactants were obtained by one-step electrochemical deposition method and could be used for flexible and all-solid-state supercapacitors (SCs). We also investigated the effect of deposition time on the capacitance performance of PEDOT microtubes doped with the same acid medium and surfactant. The structures of the final product were characterized by different characterization techniques including scanning electron microscopy (SEM) and FT-IR spectra. The electrochemical results showed that the capacitance of PEDOT microtubes doped with sulfuric acid (H2SO4) and sodium dodecyl sulfate (SDS) could be improved significantly. The areal capacitance of the prepared supercapacitor with deposition time of 600 s could achieve to 113.5 mF·cm-2 at the scan rate of 10 mV·s-1. The areal capacitances under the different bending angles remained at 93% of initial capacitive value revealing that the supercapacitor had highly mechanical stability. In addition, it remained 95.5% of the initial capacitive value after 2 000 cycles at a current density of 0.6 mA·cm-2 showing its superior cycling stability. The prepared flexible all-solid-state supercapacitor can power a light-emitting-diode (LED) which meets the practical applications of micro-power supplies.
Keywords: electro-deposition  solid-state  flexible  supercapacitor
投稿时间:2018-04-16 修订日期:2018-07-14
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李会华,葛优,朱红丽,冯晓苗,刘玉革.电沉积法制备聚(3,4-乙烯二氧噻吩)微米管及其在柔性全固态超级电容器的应用[J].无机化学学报,2018,34(10):1799-1807.
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