Scientists from the National Research Technological University "MISiS" together with colleagues
According to the authors, now the structures are made of poroussilicon is widely used in microelectronics and biomedicine. Their important property is the smooth distribution of pores of different sizes throughout the material: from nanopores on the surface to a macroporous framework.
It is noted that they are promising hydrogen energy sources that can be integrated into printed circuit boards.
We have proposed an unparalleled method of creatingmultilayer graphene coatings on the inner pore walls throughout the depth of the silicon structure. There are no other methods of producing electrodes for efficient micro-fuel cells today. Power sources of this kind can not only provide long-term backup power for equipment, but over time, they are likely to replace batteries.
Ekaterina Gosteva, Associate Professor, Department of Materials Science of Semiconductors and Dielectrics
As a result of the work, silicon structures inthe surface electrical resistance decreases several hundred times and the resistance to weakly alkaline solutions increases markedly. Also, the useful surface area of the material has tripled.
This, scientists say, dramatically increases the characteristics of the micro-fuel cell and makes it possible to increase the durability of expensive catalysts used in it.
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