Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/36957
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Vilela, Carla | pt_PT |
dc.contributor.author | Silva, Ana C. Q. | pt_PT |
dc.contributor.author | Domingues, Eddy M. | pt_PT |
dc.contributor.author | Gonçalves, Gil | pt_PT |
dc.contributor.author | Martins, Manuel A. | pt_PT |
dc.contributor.author | Figueiredo, Filipe M. L. | pt_PT |
dc.contributor.author | Santos, Sónia A. O. | pt_PT |
dc.contributor.author | Freire, Carmen S. R. | pt_PT |
dc.date.accessioned | 2023-04-12T15:42:59Z | - |
dc.date.available | 2023-04-12T15:42:59Z | - |
dc.date.issued | 2020-02-15 | - |
dc.identifier.issn | 0144-8617 | pt_PT |
dc.identifier.uri | http://hdl.handle.net/10773/36957 | - |
dc.description.abstract | Conductive natural-based separators for application in polymer electrolyte fuel cells (PEFCs) were fabricated by combining a bacterial polysaccharide, i.e. bacterial cellulose (BC), and an algae sulphated polysaccharide, i.e. fucoidan (Fuc). The diffusion of fucoidan aqueous solution containing a natural-based cross-linker, viz. tannic acid, into the wet BC nanofibrous three-dimensional network, followed by thermal cross-linking, originated fully bio-based proton exchange membranes (PEMs). The PEMs present thermal-oxidative stability in the range of 180-200 °C and good dynamic mechanical performance (storage modulus ≥ 460 MPa). Additionally, the BC/Fuc membranes exhibit protonic conductivity that increases with increasing relative humidity (RH), which is a typical feature for numerous water-mediated proton conductors. The traditional Arrhenius-type plots demonstrate a linear behaviour with a maximum protonic conductivity of 1.6 mS cm-1 at 94 °C and 98 % RH. The results showed that these fully bio-based conductive membranes have potential as eco-friendly alternatives to other PEMs for application in PEFCs. | pt_PT |
dc.language.iso | eng | pt_PT |
dc.publisher | Elsevier | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F50011%2F2019/PT | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEMS%2F00481%2F2019/PT | pt_PT |
dc.relation | CENTRO-01-0145-FEDER-022083 | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/SAICTPAC%2F0032%2F2015/PT | pt_PT |
dc.relation | POCI-01-0145-FEDER-016422 | pt_PT |
dc.relation | CENTRO-01-0145-FEDER-000001 | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F140230%2F2018/PT | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F01913%2F2017%2FCP1459%2FCT0027/PT | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F00464%2F2017%2FCP1459%2FCT0033/PT | pt_PT |
dc.rights | openAccess | pt_PT |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | pt_PT |
dc.subject | Bacterial cellulose | pt_PT |
dc.subject | Fucoidan | pt_PT |
dc.subject | Proton-exchange membranes | pt_PT |
dc.subject | Protonic conductivity | pt_PT |
dc.subject | Fully bio-based separators | pt_PT |
dc.title | Conductive polysaccharides-based proton-exchange membranes for fuel cell applications: the case of bacterial cellulose and fucoidan | pt_PT |
dc.type | article | pt_PT |
dc.description.version | published | pt_PT |
dc.peerreviewed | yes | pt_PT |
degois.publication.title | Carbohydrate polymers | pt_PT |
degois.publication.volume | 230 | pt_PT |
dc.identifier.doi | 10.1016/j.carbpol.2019.115604 | pt_PT |
dc.identifier.essn | 1879-1344 | pt_PT |
dc.identifier.articlenumber | 115604 | pt_PT |
Aparece nas coleções: | TEMA - Artigos CICECO - Artigos DFis - Artigos DEM - Artigos DQ - Artigos DEMaC - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Conductive polysaccharides-based proton-exchange membranes for fuel.pdf | 4.86 MB | Adobe PDF | Ver/Abrir |
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