A representative method to produce green hydrogen is photoelectrochemical water splitting using a photoanode which is directly immersed in electrolytes and can absorb sunlight. Green hydrogen is produced without carbon emissions by using renewable energy sources. This is expected to bring forward the era of environment-friendly “green hydrogen.” The Korea Research Institute of Standards and Science (KRISS), under the leadership of President Hyun-min Park, has showcased a potential solution for the durable and efficient photoanode with protective film, which is instrumental in hydrogen production through solar-powered water splitting. The age of “green hydrogen,” which doesn’t produce any carbon emissions, is still on the horizon. Considering the greenhouse gas emissions generated during its production, grey hydrogen is not truly environmentally friendly. But is it truly eco-friendly? Currently, the most prevalent type of hydrogen is “grey hydrogen,” which is derived from fossil fuels.
Hydrogen has recently been spotlighted as a clean and effective source of energy.
This advancement can aid in achieving carbon-free green hydrogen production and artificial photosynthesis. KRISS showcased the carrier transport mechanism of a photoanode with a protective film to enhance the production of green hydrogen. Credit: Korea Research Institute of Standards and Science (KRISS) Ansoon Kim at Korea Research Institute of Standards & Science (KRISS). Highlighting a study on a mechanism of photoelectrochemical water splitting on Si photoanode passivated with TiOx layer with various defect density from the laboratories of Dr.
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