Temperature dependence of the electrode potential of a cobalt-based redox couple in ionic liquid electrolytes for thermal energy harvesting

He, Jiang Jing, Al-Masri, Danah Tawfiq Hasan, MacFarlane, Douglas R and Pringle, Jenny 2016, Temperature dependence of the electrode potential of a cobalt-based redox couple in ionic liquid electrolytes for thermal energy harvesting, Faraday discussions, vol. 190, pp. 205-218, doi: 10.1039/c5fd00238a.

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Title Temperature dependence of the electrode potential of a cobalt-based redox couple in ionic liquid electrolytes for thermal energy harvesting
Author(s) He, Jiang Jing
Al-Masri, Danah Tawfiq Hasan
MacFarlane, Douglas R
Pringle, JennyORCID iD for Pringle, Jenny orcid.org/0000-0002-2729-2838
Journal name Faraday discussions
Volume number 190
Start page 205
End page 218
Total pages 14
Publisher Royal Society of Chemistry
Place of publication London, Eng.
Publication date 2016
ISSN 1359-6640
1364-5498
Summary Increasing the application of technologies for harvesting waste heat could make a significant contribution to sustainable energy production. Thermoelectrochemical cells are one such emerging technology, where the thermal response of a redox couple in an electrolyte is used to generate a potential difference across a cell when a temperature gradient exists. The unique physical properties of ionic liquids make them ideal for application as electrolytes in these devices. One of the keys to utilizing these media in efficient thermoelectrochemical cells is achieving high Seebeck coefficients, Se: the thermodynamic quantity that determines the magnitude of the voltage achieved per unit temperature difference. Here, we report the Se and cell performance of a cobalt-based redox couple in a range of different ionic liquids, to investigate the influence of the nature of the IL on the thermodynamics and cell performance of the redox system. The results reported include the highest Se to-date for an IL-based electrolyte. The effect of diluting the different ILs with propylene carbonate is also reported, which results in a significant increase in the output powers and current densities of the device.
Language eng
DOI 10.1039/c5fd00238a
Field of Research 091205 Functional Materials
030604 Electrochemistry
030699 Physical Chemistry not elsewhere classified
090499 Chemical Engineering not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID CE140100012
Copyright notice ©2016, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085879

Document type: Journal Article
Collection: Institute for Frontier Materials
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