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Green hydrogen: Rust as a photoanode and its limits
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Study may Help Develop Ideal Photoelectrode for Solar Water Splitting
Written by AZoCleantechApr 20 2021
Metal oxides, including rust, are fascinating photoelectrode materials that are used for producing green hydrogen with solar light.
Rust would be an extremely cheap and stable photoelectrode material to produce green hydrogen with light. But the efficiency is limited. The TEM image shows a photoanode containing a thin photoactive layer of rust. Image Credit: © Technion.
Metal oxides are also economical and abundantly available but despite years of studies, not much progress has been made.
Now, a team of researchers from Helmholtz-Zentrum Berlin (HZB), along with associates from Ben Gurion University and the Technion in Israel, has examined the optoelectronic characteristics of hematite (rust) and other similar metal oxides in unparalleled detail.