A new class of proton-conducting ionic plastic crystals based on organic cations and dihydrogen phosphate

Yoshizawa-Fujita, Masahiro, Fujita, Kyoko, Forsyth, Maria and MacFarlane, Douglas R. 2007, A new class of proton-conducting ionic plastic crystals based on organic cations and dihydrogen phosphate, Electrochemistry communications, vol. 9, no. 5, pp. 1202-1205.

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Title A new class of proton-conducting ionic plastic crystals based on organic cations and dihydrogen phosphate
Author(s) Yoshizawa-Fujita, Masahiro
Fujita, Kyoko
Forsyth, Maria
MacFarlane, Douglas R.
Journal name Electrochemistry communications
Volume number 9
Issue number 5
Start page 1202
End page 1205
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2007
ISSN 1388-2481
1873-1902
Keyword(s) solid acid
plastic crystal
ionic liquid
proton conductor
fuel cell
Summary Choline dihydrogen phosphate ([N1.1.1.2OH]DHP) and 1-butyl-3-methylimidazolium dihydrogen phosphate ([C4mim]DHP) were synthesized as a new class of proton-conducting ionic plastic crystals. Both [N1.1.1.2OH]DHP and [C4mim]DHP showed solid–solid phase transition(s) and showed a final entropy of fusion lower than 20 J K−1 mol−1 which is consistent with Timmerman’s criterion for molecular plastic crystals. The ionic conductivity of [N1.1.1.2OH]DHP was in the range of 10−6 S cm−1–10−3 S cm−1 in the plastic crystalline phase. On the other hand, the ionic conductivity of [C4mim]DHP showed about 10−5 S cm−1 in the plastic crystalline phase. [N1.1.1.2OH]DHP showed one order of magnitude higher ionic conductivity than [C4mim]DHP in the temperature range where the plastic phase is stable.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2007, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030296

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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