Energy applications of ionic liquids

Douglas R. Macfarlane, Naoki Tachikawa, Maria Forsyth, Jennifer M. Pringle, Patrick C. Howlett, Gloria D. Elliott, James H. Davis, Masayoshi Watanabe, Patrice Simon, Charles Angell

Research output: Contribution to journalArticle

818 Citations (Scopus)

Abstract

Ionic liquids offer a unique suite of properties that make them important candidates for a number of energy related applications. Cation-anion combinations that exhibit low volatility coupled with high electrochemical and thermal stability, as well as ionic conductivity, create the possibility of designing ideal electrolytes for batteries, super-capacitors, actuators, dye sensitised solar cells and thermo-electrochemical cells. In the field of water splitting to produce hydrogen they have been used to synthesize some of the best performing water oxidation catalysts and some members of the protic ionic liquid family co-catalyse an unusual, very high energy efficiency water oxidation process. As fuel cell electrolytes, the high proton conductivity of some of the protic ionic liquid family offers the potential of fuel cells operating in the optimum temperature region above 100 °C. Beyond electrochemical applications, the low vapour pressure of these liquids, along with their ability to offer tuneable functionality, also makes them ideal as CO2 absorbents for post-combustion CO2 capture. Similarly, the tuneable phase properties of the many members of this large family of salts are also allowing the creation of phase-change thermal energy storage materials having melting points tuned to the application. This perspective article provides an overview of these developing energy related applications of ionic liquids and offers some thoughts on the emerging challenges and opportunities. This journal is

Original languageEnglish (US)
Pages (from-to)232-250
Number of pages19
JournalEnergy and Environmental Science
Volume7
Issue number1
DOIs
StatePublished - Jan 2014

Fingerprint

Ionic Liquids
Ionic liquids
fuel cell
electrolyte
Electrolytes
energy
Water
Fuel cells
conductivity
oxidation
Oxidation
Proton conductivity
Electrochemical cells
Ionic conductivity
Thermal energy
Vapor pressure
vapor pressure
energy efficiency
water
Energy storage

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Chemistry
  • Pollution
  • Nuclear Energy and Engineering

Cite this

Macfarlane, D. R., Tachikawa, N., Forsyth, M., Pringle, J. M., Howlett, P. C., Elliott, G. D., ... Angell, C. (2014). Energy applications of ionic liquids. Energy and Environmental Science, 7(1), 232-250. https://doi.org/10.1039/c3ee42099j

Energy applications of ionic liquids. / Macfarlane, Douglas R.; Tachikawa, Naoki; Forsyth, Maria; Pringle, Jennifer M.; Howlett, Patrick C.; Elliott, Gloria D.; Davis, James H.; Watanabe, Masayoshi; Simon, Patrice; Angell, Charles.

In: Energy and Environmental Science, Vol. 7, No. 1, 01.2014, p. 232-250.

Research output: Contribution to journalArticle

Macfarlane, DR, Tachikawa, N, Forsyth, M, Pringle, JM, Howlett, PC, Elliott, GD, Davis, JH, Watanabe, M, Simon, P & Angell, C 2014, 'Energy applications of ionic liquids', Energy and Environmental Science, vol. 7, no. 1, pp. 232-250. https://doi.org/10.1039/c3ee42099j
Macfarlane DR, Tachikawa N, Forsyth M, Pringle JM, Howlett PC, Elliott GD et al. Energy applications of ionic liquids. Energy and Environmental Science. 2014 Jan;7(1):232-250. https://doi.org/10.1039/c3ee42099j
Macfarlane, Douglas R. ; Tachikawa, Naoki ; Forsyth, Maria ; Pringle, Jennifer M. ; Howlett, Patrick C. ; Elliott, Gloria D. ; Davis, James H. ; Watanabe, Masayoshi ; Simon, Patrice ; Angell, Charles. / Energy applications of ionic liquids. In: Energy and Environmental Science. 2014 ; Vol. 7, No. 1. pp. 232-250.
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