Hydrogels containing the ferri/ferrocyanide redox couple and ionic liquids for thermocells

Matthew Russo; Holly Warren; Geoffrey M. Spinks; Douglas R. Macfarlane; Jennifer M. Pringle

doi:10.1071/CH18395

Hydrogels containing the ferri/ferrocyanide redox couple and ionic liquids for thermocells

Matthew Russo
, Holly Warren
, Geoffrey M. Spinks
, Douglas R. Macfarlane
, Jennifer M. Pringle

School of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

23 Citations (Scopus)

Abstract

Thermoelectrochemical 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 K₃Fe(CN)₆ /K₄Fe(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 D₆₄₀ 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.

Original language	English
Pages (from-to)	112-121
Number of pages	10
Journal	Australian Journal of Chemistry
Volume	72
Issue number	2
DOIs	https://doi.org/10.1071/CH18395
Publication status	Published - 1 Jan 2019

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10.1071/CH18395

275065705-oaFinal published version, 775 KB

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abstract = " Thermoelectrochemical 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 K3Fe(CN)6 /K4Fe(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 D640 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. ",

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AU - Warren, Holly

AU - Spinks, Geoffrey M.

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AB - Thermoelectrochemical 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 K3Fe(CN)6 /K4Fe(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 D640 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.

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Hydrogels containing the ferri/ferrocyanide redox couple and ionic liquids for thermocells

Abstract

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ARC Centre of Excellence for Electromaterials Science

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Hydrogels containing the ferri/ferrocyanide redox couple and ionic liquids for thermocells

Abstract

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ARC Centre of Excellence for Electromaterials Science

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