Nernstian Adsorbate-like Bulk Layer Of Organic Radical Polymers For High-density Charge Storage Purposes

摘要

Electrical conduction by concentration gradient driven charge transport throughout nonconjugated redox polymer layers offer possibilities of using them as organic conducting materials in various wet-type devices for energy conversion and storage, such as dye-sensitized solar cells and secondary batteries. Here we report that even tens to hundreds nanometer thick redox polymer layers functionalized with 2,2,6,6-tetramethylpiperidin-l-oxyl-4-yl (TEMPO) groups show nernstian adsorbate-like behaviors, based on a fast charge propagation within the bulk layer and persistency in electrolyte solutions. Such capability was pursued also with a view to maximize a storage capacity of organic batteries, using organic polymers as electrode-active materials.