Clyde Hydrogen ($1 million for decoupled electrolysis system to produce green hydrogen)

Clyde Hydrogen, a UK cleantech startup founded in 2022, develops a decoupled electrolysis technology. This innovative solution provides a safer, more efficient, and scalable method for producing green hydrogen.

Challenges: hydrogen fuel

Hydrogen (H₂) is not only a fundamental building block of stars, but it also plays a crucial role in the synthesis of ammonia. Ammonia production plays a crucial role in the creation of a wide range of products that are essential to our daily lives. These products include fertilizers that help nourish our crops and plastics that are integral to modern living.

In the past, steam methane reforming (SMR) has been widely used to produce more than 60 million tons of hydrogen each year. Nevertheless, there are notable environmental consequences associated with this approach. This process has a significant impact on the environment, as it contributes around 2% to the global carbon dioxide (CO₂) emissions. For every ton of hydrogen it produces, it releases between 5 and 9 tons of CO₂.

However, there is a more environmentally friendly solution: water electrolysis. This process involves the separation of water into hydrogen and oxygen through the use of electric current. It is available in different forms, such as  alkaline water electrolyzer (AWE), proton exchange membrane water electrolyzer (PEMWE), and solid oxide electrolysis cells (SOEC). When electrolyzers are powered by renewable energy sources such as nuclear, solar, and wind power, the outcome is what is known as "green hydrogen".

Clyde HydrogenTechnology

Clyde Hydrogen (Clyde Hydrogen Systems) has developed a decoupled electrolysis system that allows hydrogen and oxygen to be produced separately in different places at different rates. The decoupling is achieved through using a redox mediator solution that can reversibly store protons and electrons from the water oxidation process. The reduced mediator is then transferred to a separate chamber where hydrogen is formed. This decoupled electrolysis system provides enhanced safety by eliminating the risk of hydrogen and oxygen mixing, which simplifies the process of scaling up.

Clyde Hydrogen decoupled electrolyzer

The diagram below depicts the Clyde Hydrogen’s decoupled electrolysis system.

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