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Hydrogels containing the ferri/ferrocyanide redox couple and ionic liquids for thermocells
journal contribution
posted on 2019-01-01, 00:00 authored by M Russo, H Warren, G M Spinks, D R Macfarlane, Jenny PringleJenny PringleThermoelectrochemical cells are a promising new technology for harvesting low-grade waste heat. The operation of these cells relies on a redox couple within an electrolyte, which is most commonly water-based, and improvement of these materials is a key aspect of the advancement of this technology. Here, we report the gelation of aqueous electrolytes containing the K 3 Fe(CN) 6 /K 4 Fe(CN) 6 redox couple using a range of different polymers, including polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (Cmc), polyacrylamide (PAAm), and two commercial polyurethane-based polymers: HydroMed D 640 and HydroSlip C. These polymers produce quasi-solid-state electrolytes with sufficient mechanical properties to prevent leakage, and allow improved device flexibility and safety. Furthermore, the incorporation of various ionic liquids within the optimized hydrogel network is investigated as a route to enhance the electrochemical and mechanical properties and thermal energy harvesting performance of the hydrogels.
History
Journal
Australian journal of chemistryVolume
72Issue
2Pagination
112 - 121Publisher
CSIROLocation
Clayton, Vic.Publisher DOI
ISSN
0004-9425eISSN
1445-0038Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2019, CSIROUsage metrics
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