Solar energy can be stored by converting it into hydrogen using hematite. //
Researchers from the Technion-Israel Institute of Technology have made a scientific breakthrough on the storage of solar energy, as reported by Energy & Environmental Science. A project led by Professor Avner Rothschild of the Technion's Faculty of Materials Science doctoral student Yifat Piekner from the Nancy and Stephen Grand Technion Energy Program (GTEP has shown that hematite can serve as a promising material in converting solar energy into hydrogen.
The process entails the use of photoelectrochemical solar cells, which are similar to photovoltaic cells, but instead of producing electricity, they produce hydrogen using the electric power (current × voltage) generated in them. The power then uses sunlight energy to dissociate water molecules into hydrogen and oxygen.
Hydrogen is easy to store and when used as fuel, does not involve greenhouse gas or carbon emissions.
