کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1298969 | 1498409 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fast ion conduction in an acid doped pentaglycerine plastic crystal Fast ion conduction in an acid doped pentaglycerine plastic crystal](/preview/png/1298969.png)
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.
Journal: Solid State Ionics - Volume 177, Issues 7–8, 15 March 2006, Pages 647–652