Protic organic ionic plastic crystals based on a difunctional cation and the triflate anion: a new solid-state proton conductor.
Two protic organic ionic plastic crystalline materials based on the mono- and di-protonated cations of N,N-dimethylethylenediamine, (DMEDA) and the triflate anion have been studied. The symmetrical di-protonated cation salt shows 54 °C higher melting point and 24-fold higher conductivity at room temperature as compared to the mono-protonated cation salt, making it a promising candidate for a solid-state proton conductor. The conductivity of this salt was further enhanced by acid doping.
ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Melbourne Campus at Burwood, Burwood, VIC 3125, Australia. h.zhu@deakin.edu.au maria.forsyth@deakin.edu.au.
Jun
J
Rao
ARC Centre of Excellence for Electromaterials Science (ACES), Department of Materials Engineering, Monash University, Wellington Rd, Clayton, VIC 3800, Australia.
R
R
Vijayaraghavan
ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Melbourne Campus at Burwood, Burwood, VIC 3125, Australia. h.zhu@deakin.edu.au maria.forsyth@deakin.edu.au.
Fangfang
F
Chen
ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Melbourne Campus at Burwood, Burwood, VIC 3125, Australia. h.zhu@deakin.edu.au maria.forsyth@deakin.edu.au.
Haijin
H
Zhu
ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Melbourne Campus at Burwood, Burwood, VIC 3125, Australia. h.zhu@deakin.edu.au maria.forsyth@deakin.edu.au.
Patrick C
PC
Howlett
ARC Centre of Excellence for Electromaterials Science (ACES), Department of Materials Engineering, Monash University, Wellington Rd, Clayton, VIC 3800, Australia.
Douglas R
DR
MacFarlane
ARC Centre of Excellence for Electromaterials Science (ACES), Institute for Frontier Materials (IFM), Deakin University, Melbourne Campus at Burwood, Burwood, VIC 3125, Australia. h.zhu@deakin.edu.au maria.forsyth@deakin.edu.au.
Maria
M
Forsyth