Organic-inorganic hybrid protonic polymeric electrolytes grafted by sulfonic acid/sulfonamide moieties
Thin proton conducting membranes of an organic-inorganic polymer electrolyte bearing sulphonamide and sulfonic groups are prepared by sol-gel process. Polycondensation of alkoxysilanes provides the inorganic silicate backbone whereas the organic network is formed from reactive functional groups R{prime}(({minus}DH{sub 2}){sub 3}-SO{sub 3}H) and [({minus}CH{sub 2}){sub 3}-SO{sub 2}NH{sub 2}] of alkoxysilanes of R{prime}Si[OR{sub 3}] type. Proton conductivity measured in the dry and wet state under controlled Temperature and Relative Humidity increases from 10{sup {minus}4} S/cm under vacuum to 6 10{sup {minus}2} S/cm at 70 C and 96% RH. Conductivity dependence on temperature and associated conduction mechanisms are discussed in both states.
- Research Organization:
- LEPMI-ENSEEG, St. Martin d'Heres (FR)
- OSTI ID:
- 20086889
- Country of Publication:
- United States
- Language:
- English
Similar Records
Composite plasma polymerized sulfonated polystyrene membrane for PEMFC
NEW PROTON CONDUCTIVE COMPOSITE MATERIALS WITH INORGANIC AND STYRENE GRAFTED AND SULFONATED VDF/CTFE FLUOROPOLYMERS