High stable supercapacitors based on poly(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methanol nanonet@nanotube array by template-free electrochemical preparation
High stable supercapacitors based on poly(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methanol nanonet@nanotube array by template-free electrochemical preparation
复制标题
无模板电化学制备基于聚(2,3-二氢噻吩并[3,4-b][1,4]二恶英-2-基)甲醇纳米网@纳米管阵列的高稳定超级电容器
DOI：
10.1149/1945-7111/ab9cd3
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发表时间：
2020
影响因子：
3.9
通讯作者：
Hui Zhang
中科院分区：
文献类型：
--
作者：
Yingying Zhang;Liming Xu;Jingkun Xu;Weiqiang Zhou;Hui Zhang
聚（3，4-乙撑二氧噻吩）及其衍生物由于其上级的稳定性和导电性而提供了作为超级电容器电极材料的优良平台。在这项研究中，（2，3-二氢噻吩并[3，4-B][1，4]二恶英-2-基）甲醇（PEDOT-MeOH）多孔纳米网（PEDOT-MeOH-PNN），PEDOT-MeOH中空纳米管阵列（PEDOT-MeOH-HNA）和PEDOT-MeOH-PNN涂覆的PEDOT-MeOH-HNA（PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA）使用以下无模板电沉积成功地制造：（2，3-二氢噻吩并[3，4-B][1，4]二恶英-2-基）甲醇单体。分别用傅里叶变换红外光谱和拉曼光谱、扫描电镜、热分析和电化学方法对这三种纳米结构进行了研究。PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA在40 mV s− 1下的比电容为40.5 mF cm− 2，高于PEDOT-MeOH-PNN（21.6 mF cm− 2）和PEDOT-MeOH-HNA（35.5 mF cm− 2）。此外，基于PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA的对称超级电容器提供优异的倍率性能和上级循环稳定性（在10，000次循环后保持90%的初始电容）。结果表明，对超级电容器电极进行结构设计，可以提高其电化学性能，促进导电聚合物在超级电容器领域的应用和发展。
Poly (3, 4-ethylenedioxythiophene) and its derivatives provide an excellent platform as electrode materials for supercapacitors due to their superior stability and conductivity. In this study, a poly (2, 3-dihydrothieno [3, 4-b][1, 4] dioxin-2-yl) methanol (PEDOT-MeOH) porous nanonet (PEDOT-MeOH-PNN), PEDOT-MeOH hollow nanotube array (PEDOT-MeOH-HNA) and PEDOT-MeOH-PNN coated PEDOT-MeOH-HNA (PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA) are successfully fabricated using a template-free electrodeposition of (2, 3-dihydrothieno [3, 4-b][1, 4] dioxin-2-yl) methanol monomer. These three nanostructures were studied by Fourier transform infrared spectrum and Raman spectrum, scanning electron microscopy, thermal analysis and electrochemical methods, respectively. PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA has a specific capacitance of 40.5 mF cm− 2 at 40 mV s− 1, which is higher than PEDOT-MeOH-PNN (21.6 mF cm− 2) and PEDOT-MeOH-HNA (35.5 mF cm− 2). Moreover, the PEDOT-MeOH-PNN@ PEDOT-MeOH-HNA based symmetric supercapacitor delivers excellent rate performance and superior cycling stability (90% of the initial capacitance remains after 10,000 cycles). The results indicate that the structural design of a supercapacitor electrode can improve their electrochemical performance, and promote the application and development of conducting polymers in the field of supercapacitors.