Researchers create hydrogen with solar cell




Dutch researchers have developed a solar cell, in which sunlight is used to split. Water into hydrogen and oxygen, Through the ‘artificial photosynthesis’ solar energy can be relatively easily stored.

Two teams, the TU Delft and the Helmholtz-Zentrum Berlin, the solar cells developed . Thereby, a thin film silicon solar cell in combination with a hydrogen-producing cell. With the electrical energy generated in the photovoltaic cell, often referred to as solar cell, it is raised, is in a water reservoir divided into hydrogen and oxygen. That hydrogen gas can be collected and stored or used to drive. Direct a fuel cell The storage of the hydrogen produced can be easily stored solar energy to be used later.

The hydrogen-cum solar cell is made up of a photovoltaic cell which is made up of a thin film amorphous silicon solar cell. Then, a layer of metal oxide of bismuth with tungsten impurities applied, with a coating thereon of cobalt phosphate. This layer serves as a catalyst to make it easier to split water. The tungsten serves to keep. The positive and negative charges that are separated are formed on the photo-anode A platinum electrode, for splitting of water and is connected to the solar cell.

The combination of bismuth and tungsten contributes 80 percent of the absorbed photons contribute to the generation of power, but how exactly high efficiency is achieved, the researchers do not know exactly. In theory, the efficiency of the whole machine could reach 9 percent. However, the prototype has yet produced with 4mA current per square centimeter surface a yield of 4.9 percent. The researchers, including Dutch Prof. Roel van de Krol of TU Delft, now want to make larger ones to produce. Meaningful amounts of hydrogen Hydrogen-producing solar cell


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