Tel Aviv University scientists have boosted the efficiency of producing hydrogen (a vital fuel) using electrolysis. They used a hydrogel to attach the enzyme hydrogenase to the electrode. It made the process 90% efficient and avoided the current need to employ expensive catalysts such as Platinum.

https://www.jewishpress.com/news/science-and-tech/in-critical-breakthrough-tau-researchers-produce-efficient-low-cost-green-hydrogen/2023/07/17/

https://onlinelibrary.wiley.com/doi/full/10.1002/cey2.411