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-253°C | The Bosch Hydrogen Expert Talk

Green Hydrogen = Green Future?

In the global debate on sustainable energy and decarbonization, green hydrogen, produced using electricity from renewable energy sources, has become a focal point. Its potential as a clean and versatile energy carrier has sparked intense debate and interest. In today's episode of the Bosch Hydrogen Expert Talk, Carola Ruse, Senior Vice President Business Unit Electrolyzer Solution at Bosch, faces the importance of PEM electrolysis and technological advances for the future hydrogen market. She explains how PEM electrolysis works and discusses the conditions which need to be created for hydrogen to be produced on a global scale.

-253°C | The Bosch Hydrogen Expert Talk | Episode 2: Green Hydrogen = Green Future?

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In today's episode of the Bosch Hydrogen Expert Talk with Carola Ruse, we look at the future of the hydrogen economy and the importance of PEM electrolysis.

The second episode in short

In Episode 2, Carola Ruse, Senior Vice President Business Unit Electrolyzer Solution at Bosch, talks about the potential of green hydrogen as a key enabler for achieving climate goals and the challenges of electrolysis for the energy transition and decarbonization.

Compared to other electrolysis technologies, PEM electrolysis stands out with higher power density, better energy efficiency, and high hydrogen output pressure. Offering maximum flexibility, minimal space requirements, and easy scalability, makes it a well-suited solution for the future.

Integrating them into the existing energy system and high costs are major challenges that must be overcome for the successful adoption of electrolysis. Despite this, Carola is convinced that the share of green hydrogen will increase significantly over the next year, forming a giant market.

The PEM Electrolysis Stack has a big advantage in terms of increased efficiency. This results from an optimal usage of renewable energy sources, making electrolysis an attractive option for hydrogen production.

Carola Ruse, Senior Vice President Business Unit Electrolyzer Solutions, Robert Bosch GmbH

How our Proton exchange membran (PEM) electrolysis stack works

Produced through electrolysis, electrical energy is converted into chemical energy. In this process, ultrapure water (H₂O) flows around an ionically conductive membrane between the anode and cathode. When voltage is applied, water at the anode oxidizes to oxygen (O₂), free electrons, and hydrogen ions. These ions diffuse through the membrane and combine with electrons at the cathode to form hydrogen (H₂). The reaction products are therefore hydrogen and oxygen (H₂ and O₂).

Requirements and conditions for global green hydrogen production

  • The expansion and promotion of renewable energies contribute to creating a more efficient and resource-saving energy future.
  • The development of an infrastructure for the production, storage, and distribution of hydrogen includes, for example, electrolysis plants, hydrogen tanks, pipelines, or fueling stations used for the transport and provision of hydrogen.
  • Clear and long-term policy support and appropriate regulatory frameworks are needed to promote investments.
  • Since the hydrogen industry is global oriented, international cooperation and coordination is important to establish standards, facilitate trade in hydrogen and support technology transfer.