Journal article
Carboxymethyl cellulose assisted PEDOT in polyacrylamide hydrogel for high performance supercapacitors and self-powered sensing system
European polymer journal, v 179
05 Oct 2022
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Keywords PEDOT; Conductive hydrogel; Supercapacitor; High capacitance, self-powered sensing Highlights * Multifunctional conductive CMC-PEDOT/PAAM hydrogels have been prepared and optimized. * Flexible supercapacitors based on CMC-PEDOT/PAAM film exhibit enhanced electrochemical performances. * The all-in-gel supercapacitor can be operated over a wide temperature range. * The CMC-PEDOT/PAAM hydrogels can be developed into a self-powered sensing system for human-motion detection. In this paper, we study the role of carboxymethyl cellulose (CMC) as a template for helping poly(3,4-ethylenedioxythiophene) (PEDOT) uniformly disperse into polyacrylamide (PAAM) hydrogel scaffold. The presence of a large amount of hydrogen bonds and chain entanglements enabled excellent mechanical properties with great stretchability and resilience. With the optimum mass loading of PEDOT (9.75 mg/cm.sup.2), a sandwiched configuration of flexible supercapacitor based on the CMC-PEDOT/PAAM hydrogel can deliver the highest specific capacitance of 269 mF/cm.sup.2, a maximum energy density of 23.93 [mu]Wh/cm.sup.2 at a power density of 400 [mu]W/cm.sup.2 and remained 16.18 [mu]Wh/cm.sup.2 at a power density of 3200 [mu]W/cm.sup.2, as well as enhanced cycle stability with 88% retention after 5000 cycles. In addition, such device can withstand severely bending and compressing deformations and properly operate at extreme temperatures (-40 ~ 90 [degree]C) with excellent capacitance property. What's more, the excellent conductivity of the CMC-PEDOT/PAAM hydrogel contributed to outstanding strain sensing performances. When the supercapacitor was used to power the hydrogel strain sensor, the obtained self-powered sensing system is capable of monitoring physiological signals accurately. The multifunctional performance of the CMC-PEDOT/PAAM hydrogel could be potentially used in flexible electronic devices. Author Affiliation: (a) Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China (b) College of Chemical Engineering, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing 210037, China * Corresponding author at: Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China. Article History: Received 19 June 2022; Revised 9 August 2022; Accepted 4 September 2022 Byline: Chen Chen (a,b), Yueqin Li [yueqinli@njfu.edu.cn] (a,b,*), Changhao Qian (a,b), Xiaohui Liu (a,b), Yong Yang (a,b), Lin Han (b), Qingshan Han (b)
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Details
- Title
- Carboxymethyl cellulose assisted PEDOT in polyacrylamide hydrogel for high performance supercapacitors and self-powered sensing system
- Creators
- Chen Chen - Nanjing Forestry UniversityYueqin LiChanghao QianXiaohui LiuYong YangLin HanQingshan Han
- Publication Details
- European polymer journal, v 179
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000936511500004
- Scopus ID
- 2-s2.0-85138080681
- Other Identifier
- 991019187090304721
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- Polymer Science