A transparent and adhesive carboxymethyl cellulose/polypyrrole hydrogel electrode for flexible supercapacitors. Issue 24 (27th May 2020)

• Record Type: Journal Article
• Authors: Cheng, Ya; Ren, Xiuyan; Duan, Lijie; Gao, Guanghui
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 24(2020)
• Page Start: 8234
• Page End: 8242
• Publication Date: 2020-05-27
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0tc01039a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The transparent, UV-shielding and adhesive carboxymethyl cellulose/polypyrrole hydrogel was designed to develop the flexible supercapacitor electrode. Abstract : Flexible supercapacitors have attracted increasing attention due to their unique soft and capacitive properties. However, for a conductive polymer-based electrode material, the mechanical properties, conductivity and the interface bonding with the electrolyte are all challenging. Here, polypyrrole (PPy) hydrogel electrodes with high stretchability (over 700%), electrical conductivity (11.07 S m −1 ) and interfacial bonding properties were prepared by doping carboxymethyl cellulose (CMC). Due to the emulsification effect of CMC, PPy could form hydrophilic CMC/PPy fibers in aqueous solutions. Moreover, during the formation process of the PPy hydrogel, uniformly distributed CMC/PPy particles were obtained in situ, resulting in the unique visible light transmission and ultraviolet shielding characteristics of the PPy hydrogel. As a flexible electrode, the PPy hydrogels were assembled into an all-solid-state supercapacitor, which exhibited a specific capacitance of 126.38 F g −1 and excellent cyclic stability (capacitance retention of 82% after 1000 cycles). This facile method of preparing transparent PPy hydrogels can pave a new way for constructing capacitive electronic skins.