Slovenia
An Overview of Low-carbon Hydrogen Production via Water Splitting Driven by Piezoelectric and Pyroelectric Catalysis
Jun 2024
Publication
The focus on sustainable energy sources is intensifying as they present a viable alternative to conventional fossil fuels. The emergence of clean and renewable hydrogen fuel marks a significant technological shift toward decarbonizing the environment. Harnessing mechanical and thermal energy through piezoelectric and pyroelectric catalysis has emerged as an effective strategy for producing hydrogen and contributing to reducing dependence on carbon-based fuels. In this regard this review presents recent advances in piezoelectric and pyroelectric catalysis induced by mechanical and thermal excitations respectively towards hydrogen generation via the water splitting process. A thorough description of the fundamental principles underlying the piezoelectric and pyroelectric effects is provided complemented by an analysis of the catalytic processes induced by these effects. Subsequently these effects are examined to propose the prerequisites needed for such catalysts to achieve water splitting reaction and hydrogen generation. Special attention is devoted to identifying the various strategies adopted to enhance hydrogen production in order to provide new paths for increased efficiency.
Critical Perspective on Green Hydrogen-based Seasonal Operation of Energy-intensive Industry Sectors with Solid Products
Nov 2024
Publication
In the light of a future decarbonized power grid based primarily on non-dispatchable renewable energy sources the operation of industrial plants should be decarbonized and flexible. An innovative novel concept combining industrial plants with (i) a water electrolysis unit (ii) a hydrogen storage unit and (iii) a fuel cell unit would enable seasonal supply-demand balancing in the local power grid and storage of surplus energy in the form of stable solid products. The feasibility of this concept was demonstrated in a case study taking into account the overall energy balance and economics. The characteristics of the local power grid and the hydrogen round-trip efficiency must be carefully considered when dimensioning the hydrogen units. It was found that industries producing iron and steel cement ceramics glass aluminum paper and other metals have the potential for seasonal operation. Future research efforts in the fields of technology economics and social sciences should support the sustainable flexibility transition of energy-intensive industries with solid products.
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