Fundamental Processes Occurring at Electrodes
Abstract
This report summarizes the results obtained during four years (1987- 1991) of research directed at the development of novel, polymeric coatings for electrode surfaces. The coating materials consisted of various polyelectrolytes based on functionalized polysiloxanes, newly synthesized block and random copolymers and commercially available Nafion. Coatings prepared from these materials were examined experimentally to assess their abilities to retain electroactive counterions incorporated within their structures and to provide efficient ionic and electronic conduction pathways across the coatings. The permselectivities of some coatings were tested under both static (no current found) and dynamic (with current flow) conditions. A new model to account for the unusual diffusive behavior of counteractions in Nafion coatings was proposed and tested experimentally. The mobilities and counter-ion binding equilibria for a set of soluble polyelectrolytes was examined and new methods developed for evaluation of their diffusion coefficients. The coatings were tested for possible applications in electrocatalysis, electrosynthesis and electroanalysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 29, 1991
- Accession Number
- ADA244479
Entities
People
- Fred C. Anson
Organizations
- California Institute of Technology