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Green Hydrogen

Clean hydrogen production and fuel cell technologies for decarbonization

Fig. 186 · Hofmann voltameter

The field

At a glance

Definition

Clean hydrogen production and fuel cell technologies for decarbonization

Technologies

PEM (Proton Exchange Membrane) electrolysis enables rapid response to variable renewable energy. Alkaline electrolysis provides proven, lower-cost hydrogen production. Solid oxide electrolysis operates at high temperature for improved efficiency. Hydrogen storage uses compression, liquefaction, or chemical carriers. Fuel cells convert hydrogen back to electricity for mobility and stationary power.

Applications

Green hydrogen replaces fossil-derived hydrogen in ammonia production and oil refining. Hydrogen fuel cells power heavy-duty trucks and buses. Green steel uses hydrogen instead of coal for iron ore reduction. Synthetic aviation fuel combines hydrogen with captured CO2.

Market and funding

Green hydrogen production from renewable energy via electrolysis represents one of the most capital-intensive but potentially transformative climate technologies. With 2 funders. Hydrogen is essential for decarbonizing steel, cement, shipping, and aviation.

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