Matrix electrodes based on copper and lead were obtained by cathode intercalation: CuBi, PbBi, CuPbBi, CuCa, PbCa, CuBiCa, PbBiCa, CuPbBiCa, their composition being identified by means of X-ray diffraction analysis and open-circuit potential measurement. The laser emission micro-spectral analysis determines the depth of penetration (% of mass) of cations of bismuth, lead and calcium into the structure of the electrodes under study.
