In this work the main principles used in the development of portable power source based on fuel cells with indirect oxidation of sodium borohydride are described, the general arrangement of this power source is shown, and its operating mechanism is described. The proposed power source has a number of advantages over existing portable power sources. The application of alkaline fuel cells enables to discard expensive solid-polymer electrolyte, catalysts and constructional materials that will lead to significant decrease of the power source cost. The ability to implement hydrogen and water mixture recirculation through the anode chambers of the fuel cell stack and hydrogen generator cartridge will enable to simplify the portable power source design and decrease its mass and dimension parameters. The carried out calculation of portable power source specific parameters showed that its specific parameters should exceed the parameters of lithium-ion batteries.
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