Solid-state Electrochemical Devices Research Articles

Electroactive polymer blends

AbstractThe rapid development of two new classes of electrically active polymer materials, electronically conducting and electroactive polymers and ion‐conducting polymers respectively, offers new possibilities for application of both classes of material, especially in combination with each other. While some of these combinations have been attempted before, they all met serious problems due to poor interpenetration of the two polymers. The recent availability of solubilized and soluble electroactive and conductive polymers has greatly advanced the possibilities of reducing the interpenetration problem. Some experimental studies using the combination of solubilized electroactive polypyrrole with poly(ethylene oxide) in an electroactive polymer blend electrode for solid‐state polymer batteries are discussed. The opportunities for using polymer blends for solid‐state electrochemical polymeric devices, and avenues for the development of materials for such devices, are also reviewed.

4659448 Solid state electrochemical pollution control device

4659448 Solid state electrochemical pollution control device

Non-stoichiometric oxide electrodes for solid state electrochemical devices

Oxygen exchange reactions at the electrode/electrolyte interface play an important role in the successful operation of high temperature electrochemical devices based on oxygen-ion conducting solid electrolytes. Studies of electrode kinetics using complex impedance spectroseopy show that non-stoichiometric UO 2-based fluorite solid solutions have advantages as electrodes over conventional noble metals. The respective mechanisms of oxygen exchange are discussed. These oxide electrodes are particularly suitable for oxygen sensors, enabling operation below the temperatures where noble metal electrodes give non-ideal behaviour.