Air‐Stable Conductive Polymer Ink for Printed Wearable Micro‐Supercapacitors. Issue 25 (21st May 2021)

• Record Type: Journal Article
• Authors: Chu, Xiang; Chen, Guorui; Xiao, Xiao; Wang, Zixing; Yang, Tao; Xu, Zhong; Huang, Haichao; Wang, Yihan; Yan, Cheng; Chen, Ningjun; Zhang, Haitao; Yang, Weiqing; Chen, Jun
• Is Part Of: Small. Volume 17:Issue 25(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-05-21
• Subjects: conductive polymer inks -- electrochemical energy storage -- polyaniline nanosheets -- printed electronics -- wearable electronics; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202100956
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Printed electronics are expected to facilitate the widespread distributed wearable electronics in the era of the Internet of things. However, developing cheap and stable electrode inks remains a significant challenge in the printed electronics industry and academic community. Here, overcoming the weak hydrophilicity of polyaniline, a low‐cost, easy‐fabricating, and air‐stable conducting polymer (CP) ink is devised through a facile assemble‐disperse strategy delivering a high conductivity in the order of 10 −2 S cm −1 along with a remarkable specific capacitance of 386.9 F g −1 at 0.5 A g −1 (dehydrated state). The additive‐free CP ink is directly employed to print wearable micro‐supercapacitors (MSCs) via the spray‐coating method, which deliver a high areal capacitance (96.6 mF cm −2 ) and volumetric capacitance (26.0 F cm −3 ), outperforming most state‐of‐the‐art CP‐based supercapacitors. This work paves a new approach for achieving scalable MSCs, thus rendering a cost‐effective, environmentally friendly, and pervasive energy solution for next‐generation distributed electronics. Abstract : A low‐cost, scalable, and air‐stable conducting polymer ink is invented via a facile assemble‐disperse strategy for printed micro‐supercapacitors, which exhibits remarkable energy storage capacity as a power source for wearable bioelectronics in the era of Internet of things.