Electroreduction of Cobalt(II) Chloride and Cobalt(II) Fluoride Mixtures in a Thermally Activated Chemical Current Source

• Published in: Russian metallurgy Metally Vol. 2021; no. 2; pp. 159 - 164
• Main Authors: Volkova, O. V., Zakharov, V. V., Plaksin, S. V., Il’ina, E. A., Pankratov, A. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2021; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Cobalt; Current sources; Discharge; Electrode materials; Halides; Materials Science; Metallic Materials; Morphology; Reduction (metal working); thermally activated chemical current sources; cobalt chloride; cobalt fluoride; cathode
• ISSN: 0036-0295; 1555-6255; 1531-8648
• DOI: 10.1134/S0036029521020300

The discharge characteristics of the batteries of thermally activated chemical current sources containing CoCl
2
–CoF
2
mixtures as positive electrodes are studied. The compositions and morphologies of the reduction products of the cathodic materials are determined. The use of the mixtures instead of individual cobalt halides makes it possible to stabilize the discharge characteristics and to decrease the discharge temperature of the current source battery. The reduction of Co
2+
to metallic Co
0
occurs under diffusion-controlled conditions.