卷对卷印刷的、在含铅污染水电解质中的高压超级电容器电池

Roll-to-roll printed high voltage supercapattery in lead-contaminated aqueous electrolyte.

作者信息

Getachew Teklewold, Mehretie Solomon, Yip Hin-Lap, Xia Ruidong, Admassie Shimelis

机构信息

Department of Chemistry, Addis Ababa University, PBox 1176, Addis Ababa, Ethiopia and State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou, 510640, P. R. China.

Department of Chemistry, Addis Ababa University, PBox 1176, Addis Ababa, Ethiopia.

出版信息

Phys Chem Chem Phys. 2020 Mar 11;22(10):5597-5603. doi: 10.1039/c9cp06730b.

DOI:10.1039/c9cp06730b

PMID:32100761

Abstract

This work investigated the potential application of roll-to-roll printed PEDOT:PSS on an ITO/PET substrate using Pb2+ containing 0.1 M NaCl aqueous solution for a supercapattery. The PEDOT:PSS/ITO/PET electrode achieved 2.2 μAh cm-2 (46.5 mAh g-1) in 0.1 M NaCl and 10 μAh cm-2 (216.8 mAh g-1) in 2 mM Pb2+/0.1 M NaCl at a current density of 0.2 mA cm-2 (4.34 A g-1). The electrode also shows good cyclic performance that retains 63% of its initial capacitance after 1000 charge-discharge cycles. A device operating at a high voltage of 1.8 V was built using PEDOT:PSS/ITO/PET in aqueous electrolyte. The energy density of the symmetric PEDOT:PSS/ITO/PET device is 6.2 Wh kg-1 in 0.1 M NaCl and is improved to 11 Wh kg-1 in 3 mM Pb2+/0.1 M NaCl.

摘要

这项工作研究了在用于超级电容器的ITO/PET基板上，使用含0.1 M NaCl的Pb²⁺ 水溶液对卷对卷印刷的PEDOT:PSS进行潜在应用。PEDOT:PSS/ITO/PET电极在0.1 M NaCl中，电流密度为0.2 mA cm⁻²（4.34 A g⁻¹）时，实现了2.2 μAh cm⁻²（46.5 mAh g⁻¹）的电容；在2 mM Pb²⁺/0.1 M NaCl中，实现了10 μAh cm⁻²（216.8 mAh g⁻¹）的电容。该电极还表现出良好的循环性能，在1000次充放电循环后保留了其初始电容的63%。使用PEDOT:PSS/ITO/PET在水性电解质中构建了一个在1.8 V高压下运行的器件。对称的PEDOT:PSS/ITO/PET器件在0.1 M NaCl中的能量密度为6.2 Wh kg⁻¹，在3 mM Pb²⁺/0.1 M NaCl中提高到11 Wh kg⁻¹。