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Bosch is planning not only to use green hydrogen but also to be one of the companies producing it. To do so, Bosch is branching out into the development of components for electrolyzers, which use electrolysis to split water into hydrogen and oxygen.
“We cannot afford to delay climate action any longer, so we aim to use Bosch technology to support the rapid expansion of hydrogen production in Europe,” said Dr Stefan Hartung, chairman of the board of management of Robert Bosch GmbH, at the presentation of the company’s annual figures.
“To do this, we will leverage our know-how in fuel-cell technology,” added Dr Markus Heyn, member of the board of management of Bosch and chairman of the Mobility Solutions business sector.
Bosch will assign the development of electrolyzer components to the Mobility Solutions business sector, investing up to 500 million euros in this venture by the end of the decade.
Bosch forecasts that the global market for electrolyzer components will increase to a volume of around 14 billion euros by 2030, with Europe set to see the highest rates of growth. To help businesses and society reduce dependency on fossil fuels and harness new forms of energy, Bosch intends to invest some three billion euros in climate-neutral technology, such as electrification and hydrogen, over the next three years.
In the fuel cell, the key component of an electrolyzer is a stack, which comprises several individual cells connected in series. In each of these cells, electricity is used to split water into hydrogen and oxygen. This is the reverse of what takes place in a fuel cell, where electricity is generated by combining hydrogen and oxygen.
In both cases, the chemical reaction is facilitated by a proton-exchange membrane (PEM). Bosch is collaborating with several partners to develop a way of combining the electrolyzer stack with a control unit, power electronics, and various sensors to create a “smart module”. With pilot plants scheduled to commence operation next year, the company plans to supply these smart modules to manufacturers of electrolysis plants and industrial service providers from 2025 onward.
Bosch will incorporate a number of these compact modules. They can then be used both in smaller units with a capacity of up to ten megawatts and in gigawatt-rated onshore and offshore plants – whether in new-build projects or in existing plants for conversion to the production of green hydrogen.
To maximize the efficiency of hydrogen production and extend the service life of the stack, the smart modules are to be connected to the Bosch cloud. At the same time, the use of a modular design for the electrolyzers is expected to make maintenance more flexible.
Any scheduled work will require the shutdown of certain sections of the plant only, instead of the entire facility. Bosch is also working on service concepts that will include the recycling of components in order to promote a circular economy.
