Status and prospects for the development of mobile power sources

The physicochemical foundations of the basic structures and technologies for the production of promising electrolytic cells for the accumulation of electrical energy with a specific energy intensity for reusable cells of 350–500 W  ⋅ h/kg at the first stage and 1000 W  ⋅ h/kg at the second stage have been developed. Along with traditional chemical current sources and ionistors, supercapacitive capacitor structures with a thin dielectric in a double electric layer and hybrid capacitors appear, in which energy is accumulated both in a double electric layer and due to electrochemical processes. This approach makes it possible to reduce the internal resistance of electrolytic cells, which leads to a decrease in heat generation during operation and, accordingly, an increase in specific energy consumption, operational safety, a decrease in charging time, and an increase in specific power. 
A promising anode is a nanostructured electrode material, which is a carbon-based matrix filled with a nanostructured reactive material. Promising materials for filling the carbon matrix are Li and its alloys, Si, Al, Na, Sn, Mg, Zn, Ni, Co, Ag, and a number of other materials and their compounds. The influence of the specific area of the carbon material, dielectric constant, addition of a chemically active substance on the specific energy consumption has been studied. The theoretical values of the specific energy capacity of hybrid capacitors with a metal-air system are calculated. A thin-film technological complex has been developed that ensures the creation of a new generation of electrode materials, the design of which is a carbon matrix with a highly developed surface, in which there is a tunnel-thin dielectric, on the surface of which a chemically active material is placed.

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