These cells consist of two electrodes (cathode and anode) that require the addition of either a liquid electrolyte or a solid electrolyte membrane, depending on the supplier and the technology used. The cell, as with batteries, is the " core" of the electrolyzer the means through which the electrochemical process that allows the production of H 2 takes place. However, the manufacturing process for both types is very similar and can be divided into three main phases.įirst, there is cell manufacturing. PEM electrolyzers are characterized because their electrolyte is a solid polymeric membrane that conducts H +.Įach of these routes has different advantages in terms of efficiency, flexibility, lifetime or purity of the final H 2 produced. This goal includes the two technological alternatives that are currently the most developed and, in fact, are already in the commercialization stages: alkaline electrolyzers and PEM electrolyzers.Īlkaline electrolyzers are produced by immersing two electrodes - separated by a diaphragm - in an alkaline liquid electrolyte that conducts OH – anions. The aforementioned investments and technological developments are largely aimed at promoting the start-up of the electrolyzer production process. But what are the activities and phases that make up the electrolyzer manufacturing industry? Three main stages in the electrolyzer manufacturing chain This shows the importance that Europe is placing on building a strong hydrogen industry on the basis of its own production network. This investment will be earmarked both for the development of initiatives associated with the research and development of technologies (including electrolyzers) and incentives for the installation of green hydrogen production projects. To this end, the European Commission has already announced, through its strategic hydrogen roadmap, the intention to mobilize almost 500,000 million euros of public-private financing in this decade. Not surprisingly, according to estimates by the Clean Hydrogen Partnership (the main EU public-private initiative related to the H 2industry), it is expected that by 2050 the demand for hydrogen on the continent could exceed 2,250 TWh in an "ambitious" scenario, in which the continent has been able to boost the different stages of the hydrogen value chain in its territory, including the capacity to produce it. Not only because the subsequent deployment of H 2- based applications will depend on its technological advances, but also because the different countries and regions of the world are seeking to dominate this stage of the hydrogen value chain to ensure their future supply and independence in energy terms.įor example, Europe, as well as other examples such as batteries, is working hard to develop its own industrial network around hydrogen. Thanks to this, the so-called "green hydrogen" is obtained, the only type of H 2 that does not emit CO 2 into the atmosphere during the production process.ĭue to such characteristics and the importance of developing a "green" hydrogen industry, the manufacture of electrolyzers is gaining more and more prominence. This chemical process separates the hydrogen and oxygen molecules that make up water through renewable electricity (or, at least, without carbon emissions). One of the best examples of this is the manufacturing industry associated with the production of electrolyzers, which are the key devices for achieving hydrogen production from what is known as electrolysis.
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