ABSTRACT
The cell voltage of aqueous electrochemical power sources is limited to be within 1.229 V, the thermodynamic stability window of water. This cell voltage is signicantly lower than the values of cells operating in organic electrolytes. For an aqueous electrode with a half-cell reaction that is pH sensitive, it is possible to have a higher cell voltage by coupling the positive electrode in acid with the negative electrode in an alkaline electrolyte. The electrolytes of different pH in these hybrid power sources are separated by a membrane to prevent bulk neutralisation and facilitate an ionic current. This chapter
CONTENTS
11.1 Electrochemical Window of Power Sources with pH-Dependent Half-Cells ....................................................................................................430
