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Fast ion conduction in an acid doped pentaglycerine plastic crystal

journal contribution
posted on 15.03.2006, 00:00 authored by S Long, Patrick HowlettPatrick Howlett, D MacFarlane, Maria ForsythMaria Forsyth
High proton conductivity has been achieved in the high temperature plastic crystal phase of pentaglycerine when doped with strong acids, including trifluoromethanesulfonic acid (triflic acid) and methanesulfonic acid. The solid–solid phase transition from the ordered to plastic phase in this material occurs at 86 °C and conductivities of 10− 3 S/cm were measured in the high temperature plastic phase on the addition of 1 mol% triflic acid. In the case of methanesulfonic acid, the conductivities showed a greater dependence on acid concentration and were lower than for triflic acid, as expected on the basis of acid strengths. Electrochemical characterisation shows a clear hydrogen reduction process indicating that the proton is the mobile species in the plastic phase.

History

Journal

Solid state ionics

Volume

177

Issue

7-8

Pagination

647 - 652

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0167-2738

eISSN

1872-7689

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, Elsevier B.V.