Autor(es):
Henriques, João Tiago ; do Carmo, Catarina Cidade ; Marques, Ana ; Ferreira, Isabel M. M. ; Baptista, Ana Catarina
Data: 2024
Identificador Persistente: http://hdl.handle.net/10362/172565
Origem: Repositório Institucional da UNL
Projeto/bolsa:
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0037%2F2020/PT;
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT;
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT;
Assunto(s): Carbon electrodes; Electronictextiles; Polypyrrole; Supercapacitors; Washability
Descrição
This work was financed by national funds from FCT - Fundação para a Ciência e a Tecnologia, I.P., in the scope ofthe All-FiBRE project with the reference PTDC/CTM−CTM/1571/2020. This work was also supported by ERC-CoG-2014, CapTherPV, 647596.
Technological solutions for emerging e-textiles are being sought to enable e-wear technology to be self-sustaining and lightweight. A rippling 1D carbon fiber capacitor design was made with commercial carbon threads as electrodes using simulated sweat solution as the electrolyte. This is particularly relevant for potential sports textile applications in which sweat could serve as an electrochemical energy source. An electrospun cellulose acetate fiber membrane and a commercially available felt were used as separators capable of soaking the electrolyte. These were tested in braided and woven electrode configurations, respectively. Functionalizing the carbon wires with polypyrrole (PPy) enhanced the surface area and significantly increased the specific capacity by approximately an order of magnitude (0.62 F/g). Cyclic voltammetry and charge-discharge tests confirmed the washability and durability of the devices for at least 1000 cycles.
