期刊
APPLIED SCIENCES-BASEL
卷 9, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/app9163371
关键词
conjugated polymers; in-situ composite materials; conductivity; 3D optical profilometry; flexible electrodes; energy storage
类别
资金
- CDTI research project [IDI-20180087]
- Consejo Nacional de Ciencia y Tecnologia for CVU [559770/Registro 297710, S2013/MAE-2800]
Composite materials of conjugated polymers/cellulose were fabricated by incorporating different polythiophene-derivative polymers: Poly(3,4-ethylenedioxythiophene) (PEDOT) and an alkylated derivative of poly(3,4-propylenedioxythiophene) (PProDOT). These conjugated polythiophenes were deposited by casting or spray coating methodologies onto three different cellulose substrates: Conventional filters papers as cellulose acetate, cellulose grade 40 Whatman((R)) and cellulose membranes prepared from cellulose microfibers. The preparation of composite materials was carried out by two methodologies: (i) by employing in-situ polymerization of 3,4-ethylenedioxithiophene (EDOT) or (ii) by depositing solutions of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) or lab-synthetized PProDOT. Composite materials were studied in terms of electrical conductivity and surface morphology assessed by impedance spectroscopy, surface conductivity, SEM, and 3D optical profilometry. In-situ composite materials prepared by spray coating using iron trifluoromethane sulfonate as oxidizing agent can be handled and folded as the original cellulose membranes displaying a surface conductivity around 1 S.cm(-1). This versatile procedure to prepare conductive composite materials has the potential to be implemented in flexible electrodes for energy storage applications.
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