Proton injection in the highly conducting mixed valence square planar platinum complex; K1.64Pt(C2O4)2·xH2O new solid state proton galvanic cell

Single crystals of K1.64Pt(C2O4)2·xH2O display non-ohmic behaviour in applied electric fields which is shown to be associated with proton injection at the anode; the half cell reactions associated with this proton migration constitute a new solid state proton battery with cell potential in the range 0·3 to 0·5 V.