H2-BOOST - Forbedring af ydeevnen af installerede alkaliske elektrolyseanlæg ved hjælp af en ny in situ elektrodeaktiveringsmetode

The overall objective of the H2-BOOST project is to improve the efficiency of already installed alkaline elec-trolyser technologies by min. 10%. Using a novel, patent-pending, in-situ electrode activation method, it will be possible to upgrade the electrodes and produce the same amount of hydrogen using less energy and potentially extend the lifetime of alkaline electrolyser plants. In addition, less cooling would be needed due to less heat generation. The project aims to prove that it is possible at an industrial scale to boost electrodes in already installed electrolyser units. The project is divided into three phases. Firstly, the project group must prove that it is possible to substitute electroplating processes with a sulfidation process. The sulfidation pro-cess will be optimised, and tests will be conducted in an ex-situ furnace suitable for sulfiding. Secondly, a prototype electrolyser stack will be used for testing in-situ sulfidation activation method on four different nickel electrodes, and subsequent quality/performance electrode measurement will be conducted. Finally, the in situ sulfidation will be tested at industrial scale. The project will terminate at the end of 2025 and the H2-BOOST concept is expected to be on the market in mid-2026.