O. V. Volkova, V. V. Zakharov, E. G. Vovkotrub, S. V. Plaksin, S. V. Pershina.
ABSTRACT
Discharge characteristics of the heat activated battery with NiCl2–MoO3 mixtures as a cathode material has been investigated. Composition and morphology of reduction products of the cathode materials have been determined. The addition of molybdenum(VI) oxide to nickel(II) chloride leads to stabilization of the discharge curves and increase of the cell voltage. The formation of MoO2 was accompanied by the reduction process of Ni2+ to Ni0. The electrode process was complicated by interaction of the cathode material with the reduction products and the formation of the melt of molybdenum oxide / lithium molybdates with lithium halogenides. A mechanism of the reduction of Ni2+ and Mo6+ to metallic nickel and molibdenum has been proposed, which includes an intermediate step of a melt formation of
NiCl2 and lithium molybdates with lithium halogenides.
KEYWORDS thermally activated chemical current sources, cathode, nickel chloride, molybdenum oxide
DOI: 10.1134/S0235010619050116