We have established the described apparatus where a new cluster source was bought and connected to an existing UHV-apparatus equipped with the most useful Surface Science methods such as XPS, ISS, STM, TPD. This already elaborate instrument has furthermore been equipped with a high-pressure cell so that the activity of the nanoparticles could be tested without being exposed to air which is mandatory for many catalysts. We have lately equipped the instrument with an additional sputter magnetron to be capable of preparing in situ different support materials so a study of the metal-support interaction can also be undertaken without exposure to air. We have also just installed a new electronic for the sputter magnetron, so it is possible to use High-impulse sputtering when generating the mass-selected particles improving intensity of cluster in the above-mentioned transition range. At the same time the theory and testing went on and we have investigated alternative interesting materials such as for the electrochemical ammonia production. Clunatra has resulted in 15 scientific publications of which several are in the absolute top international Journals such as Science (2), Nature Energy (2), Energy and Environmental Science (2), Joule (1), ACS Energy Letters (2), and Nature Communication (1). Beyond this another 5-6 papers are expected to be finalized in 2023 as PhDs are finalizing. We have shown that it is possible to have single Ir atoms adhered to a Ta2O3 entity and investigated it activity from 1,2 nm up to 5 nm. The reason for improving is that the scarcity and price of Iridium is prohibiting its implementation for large scale use for acidic hydrogen production by water splitting. It did not show any magic number behavior, but the Ir atoms were a factor of five more active per weight than the similar sized IrO2 nanoparticles for Oxygen Evolution Reaction (OER) in acid water splitting. Beyond being more active they were also more stable, and this shows that there are routes to enhance the use of the Iridium for acidic water splitting which is the only reasonably stable catalyst for OER in acid known today. This was published in Nature Energy 7 (2022). Before starting an investigation, we always must establish state-of-the-art of the field and since we were complaining about the experimental status and approach in the field, we were invited to write a perspective on the status and appropriate approach for measuring OER in water splitting also in Nature Energy 4 (2019) 430. The nature of the more active but less stable Ruthenium for OER was investigated to see if similar enhancements could be obtained. The fundamental electrochemical investigations were published in Energy and Environmental Science 15 (2022) 1977 and 15 (2022) 1988. The possibilities for more active Hydrogen Evolution Catalysts (HER) for acidic water splitting was also investigated. Here we compared all the inorganic catalysts to arch-type Platinum catalyst for HER and found that not only was Platinum the best, but it also proved to be transport limited, which questions the many papers published claiming that they can make catalysts better than Platinum. On a scientific basis, the Turn-Over-Frequency (TOF), we showed that Platinum is superior by roughly three orders of magnitude over all inorganic compounds. This was published in ACS Energy Letters 6 (2021) 1175.
