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Electrochemically Active, Compressible, and Conducting Silk Fibroin Hydrogels
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Materials Science and Engineering, Nanotechnology and Functional Materials. Sichuan Univ, West China Hosp Stomatol, State Key Lab Oral Dis, Chengdu 610041, Peoples R China..ORCID iD: 0000-0002-8611-4089
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Materials Science and Engineering, Applied Material Science.ORCID iD: 0000-0001-6830-1633
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0001-8519-3240
Hunan Univ, Coll Biol, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Hunan, Peoples R China..
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2020 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 59, no 19, p. 9310-9317Article in journal (Refereed) Published
Abstract [en]

Silk fibroin-based conducting hydrogels possess hierarchical structural motifs featuring unique properties, but the development of such materials has proven to be challenging. Herein, we develop a novel strategy for the fabrication of a conducting silk fibroin hydrogel based on an interpenetrated network of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and silk fibroin. The hydrogel possesses good electrical conductivity and considerable capacitance and cycling stability due to the existence of the PEDOT conducting network, as well as enhanced mechanical properties such as compressibility due to beta-sheets in the silk fibroin network and Ca2+ cross-linking of the PSS components. A symmetric charge storage device based on conductive silk fibroin hydrogel electrodes exhibited a remarkable areal capacitance of 1.1 F cm(-2) at 0.5 mA cm(-2), as well as a good capacitive response under a compressed state. This combination of compression strength and electrochemical properties makes this conducting silk hydrogel a potential material for unconventional energy storage applications.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2020. Vol. 59, no 19, p. 9310-9317
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Materials Chemistry
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URN: urn:nbn:se:uu:diva-413907DOI: 10.1021/acs.iecr.0c00407ISI: 000535251500040OAI: oai:DiVA.org:uu-413907DiVA, id: diva2:1445172
Available from: 2020-06-22 Created: 2020-06-22 Last updated: 2020-06-22Bibliographically approved

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Yang, JiaojiaoLuo, JunLiu, HaidongWelch, KenWang, ZhaohuiStrömme, Maria

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