Perfluorinated sulfonic acid ion-exchange membrane doped silicotungstic acid thermal stability and conductivity

DOI

10.2991/icaemt-15.2015.139How to use a DOI?

Keywords

Silicotungstic acid, silane coupling agents, composite membrane, thermal stability, proton conductivity

Abstract

Perfluorinated sulfonic acid ion exchange membrane doped the silicotungstic acid thermal stability and thermal degradation kinetics were studied by means of thermal gravimetric analysis in a nitrogen atmosphere, the heating rate used respectively was 5, 10, 20 and 30 /min. Using the Kissinger, Flynn-Wall-Ozawa, Friedman and Starink methods, non-isothermal kinetics data of composite membrane doped the silicotungstic acid were analyzed. TG-DTG curves showed that for proton exchange composite membranes, when decomposition rates reached 5 and 10%, the lowest thermal degradation temperature respectively was 255.9 and 310.9 . The results calculated by various methods indicated that the average value of apparent activation energy of composite membrane was 144.5kJ/mol. When composite film was measured at -30 and 90 , the conductivity of film respectively was 1.42×10-6 S•cm-1 and 3.12×10-5S•cm-1.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yi Heng Lu
AU  - Shuang Chun Ma
AU  - Ying Chen
AU  - Wen Quan Feng
PY  - 2015/08
DA  - 2015/08
TI  - Perfluorinated sulfonic acid ion-exchange membrane doped silicotungstic acid thermal stability and conductivity
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 729
EP  - 737
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.139
DO  - 10.2991/icaemt-15.2015.139
ID  - Lu2015/08
ER  -