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Functional Electro-materials Based on Ferricyanide Redox-active Ionic Liquids

Journal Article


Abstract


  • The unique physical and chemical properties of conventional room temperature ionic liquids (RTILs) render them highly deployable materials in electrochemical devices performing functions such as solvent-free electrolytes in capacitors, batteries and sensors. However, these non-faradaic applications can be complimented by incorporating faradaic redox functionality into the ionic liquid structure which facilitates access to a large array of new electrochemical applications such as dye sensitised solar cells, redox batteries, hydrid capacitors and selective amperometric sensor applications which are all reliant on heterogeneous or homogenous electron-transfer processes. This paper presents and discuses some examples of redox active ionic liquids base on the ferri-/ferro- functionality. These functional electro-materials which are already known [Ref. [18]] exhibit simple reversible one-electron electrochemistry at very negative potentials (by at least ¿1 V relative to aqueous systems) in anhydrous media. Glass transition temperatures lower than ¿50 °C were also observed along with an overall thermal stability up to at least 400 °C under dry N2 atmosphere conditions. Opportunities and challenges for these types of electro-materials are discussed.

Publication Date


  • 2017

Citation


  • Doherty, A. P., Graham, L., Wagner, K., Officer, D. L., Chen, J. & Wallace, G. G. (2017). Functional Electro-materials Based on Ferricyanide Redox-active Ionic Liquids. Electrochimica Acta, 245 934-940.

Scopus Eid


  • 2-s2.0-85020417886

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2571

Number Of Pages


  • 6

Start Page


  • 934

End Page


  • 940

Volume


  • 245

Place Of Publication


  • United Kingdom

Abstract


  • The unique physical and chemical properties of conventional room temperature ionic liquids (RTILs) render them highly deployable materials in electrochemical devices performing functions such as solvent-free electrolytes in capacitors, batteries and sensors. However, these non-faradaic applications can be complimented by incorporating faradaic redox functionality into the ionic liquid structure which facilitates access to a large array of new electrochemical applications such as dye sensitised solar cells, redox batteries, hydrid capacitors and selective amperometric sensor applications which are all reliant on heterogeneous or homogenous electron-transfer processes. This paper presents and discuses some examples of redox active ionic liquids base on the ferri-/ferro- functionality. These functional electro-materials which are already known [Ref. [18]] exhibit simple reversible one-electron electrochemistry at very negative potentials (by at least ¿1 V relative to aqueous systems) in anhydrous media. Glass transition temperatures lower than ¿50 °C were also observed along with an overall thermal stability up to at least 400 °C under dry N2 atmosphere conditions. Opportunities and challenges for these types of electro-materials are discussed.

Publication Date


  • 2017

Citation


  • Doherty, A. P., Graham, L., Wagner, K., Officer, D. L., Chen, J. & Wallace, G. G. (2017). Functional Electro-materials Based on Ferricyanide Redox-active Ionic Liquids. Electrochimica Acta, 245 934-940.

Scopus Eid


  • 2-s2.0-85020417886

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2571

Number Of Pages


  • 6

Start Page


  • 934

End Page


  • 940

Volume


  • 245

Place Of Publication


  • United Kingdom