A large scale hydrogen generator driven by purely sunlight was demonstrated by Prof Domen’s group. The results were published by Nature on 25 August 2021.
The study used a SrTiO2:Al photocatalyst and reached an efficiency of 0.76% for Solar-to-Hydrogen process (STH). The STH would be 5-10% for any economically viable application. Lifetime of photocatalyst is another constraint to the commercialization.
Please consider the following questions and describe your solutions.