The electrical state of NAFION coated electrodes emersed from liquid electrolytes

✍ Scribed by Marcella Cappadonia; Karl Doblhofer

• Book ID: 103063412
• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 290 KB
• Volume: 34
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(89)85068-6

✦ Synopsis

Abstracts--Electrodes were coated with a perfluorosulfonate polymer (NAFION). After equilibration in liquid electrolytes they were withdrawn from the electrolytes under potentiostatic control ("emersed"). The apparent work functions of the emersed coated electrodes were determined from measurements of Volta potential differences. They were conducted with Kelvin's method of the vibrating capacitor plate. The apparent work functions at constant emersion potential show the linear correlation with the logarithm of the solution concentration expected for the equilibrium potential drop across the membrane4ectrolyte interface (the Donnan potential). From comparison with the apparent work function of the electrolyte, at the same potential, the surface dipole potential of the solvated polymer after the emersion is derived.