Efficient production of solar hydrogen through direct coupling of concentrating solar cells and electrolyzer

Splitting hydrogen from water molecules via electrolysis requires energy, which ideally comes from renewable energy sources. Scientists at the Fraunhofer Institute for Solar Energy Systems ISE have developed a combined photovoltaic/electrolysis module that efficiently produces hydrogen directly from solar energy. To do this, the water molecule is split using the high photovoltage of multi-junction solar cells, which in turn are electrically and thermally connected to electrolyzer cells. A demonstrator from the research team tested outdoors converted up to 31.3% of solar energy into chemical energy, based on the higher heating value of hydrogen.

from Energy & Green Tech News - Energy Sciences News, Green Tech, Energy, Energy Science https://ift.tt/XbMf4Fr

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