FIELD: electrical engineering. SUBSTANCE: cathode structure and power supply element with this cathode structure have manganese dioxide active substance conducting addition and barium compound as additive making up 3-25 per cent of total mass. Barium compound is selected of ground containing barium oxide, barium hydroxide and barium sulfate. Barium hydroxide may contain eight molecules of crystallization water. EFFECT: more effective structure. 19 cl, 10 dwg , 3 tbl
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