Positive Electrodes in Other Aqueous Systems

Abstract

The following sections of this chapter will discuss three topics relating to positive electrodes in aqueous electrolyte battery systems, the manganese dioxide electrode, the “nickel” electrode, and the so-called memory effect that is found in batteries that have “nickel” positive electrodes. The first of these deals with a very common material, MnO2, which is used in the familiar “alkaline” cells that are found in a very large number of small portable electronic devices. This electrode operates by a simple proton insertion reaction.