Browsing by Author "Zinin, V. V."

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    Innovative Technological Concept for the Production of High-Density Cathodes for Lithium Reserve Power Sources with Increased Specific Energy
    (Ukrainian State University of Chemical Technology, Dnipro, 2024) Markevych, O. V.; Polishchuk, Y. V.; Zinin, V. V.; Vavilon, K. I.; Sukhyy, Kostyantyn M.
    ENG: This paper presents an innovative technological concept that significantly enhances the specific energy (both gravimetric and volumetric) of primary lithium power sources. A composition and laboratory-scale process for manufacturing composite cathodes with minimal electrochemically inactive («ballast») components have been developed. The proposed approach enables the production of high-density cathodes without significantly reducing their porosity. The composite cathodes were tested in disc-shaped primary power sources with dimensions of 2325 (23 mm in diameter and 2.5 mm in height). The effect of graphene content in the cathode mass on the discharge voltage of the cells was investigated. It was demonstrated that a graphene content of 3 % by weight of MnO2 in the cathode mass increases the average discharge voltage of the cells from 2.1 V to 2.5 V at a discharge current of 1 mA. Testing at a discharge current of 1 mA revealed that the capacity of the developed cells exceeds that of the best commercial counterparts by at least 40 %.