
439pH Differential Power Sources with Electrochemical Neutralisation
membrane is usually employed as a separator. Ion-exchange membranes
have xed charges on their backbones and, therefore, have the ability to
transport selected ions [12–14]. Anion-exchange membranes (AEMs) which
are permeable to anions and can be used in Daniell cell to allow
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anion to pass through, though the original version of Daniell uses a porous
ceramic separator.
A BPM consists of two polymer layers, one AEM with positive xed charges
permeable only to anions, the other cation-exchange membrane (CEM) with
negative xed charges permeable to cations. Between the AEM ...