The United States developed an artificial photosynthesis device to generate hydrogen
A research team led by MIT Chemist Daniel Nocera has successfully developed a device for producing hydrogen using solar energy. They first pressed three thin silicon solar cell materials into sheet solar cells, and then plated the positive side of the cell (the side facing the sunlight) with a catalyst synthesized by three elements of nickel, molybdenum and zinc, and the negative side (back (To the side of the sun) coated with a catalyst containing cobalt. Immersing this solar panel in water, the positive charge generated on the positive side passes through the silicon cell to the negative side, ionizing the water molecules into oxygen molecules and positively charged hydrogen ions, the hydrogen ions swim to the positive side and the negative charge remaining on the positive side After neutralization, hydrogen molecules are generated and hydrogen gas is released. This device of Nocera is very similar to the photosynthesis of plants. It is much superior to similar devices in the past because the materials used are very rich and cheap, and it can generate hydrogen steadily for a long time.
Nocera's invention recently has a large number of text descriptions and videos on many famous websites such as "Science" and "Nature". Some commented that this is a milestone invention, which directly converts solar energy into clean energy that can be stored and transported in a large amount. It solves the problem of human energy such as electrical energy storage, greenhouse gas emissions of fossil fuels and environmental pollution. The Indian multinational company Tata Group has signed a technology marketization agreement with Nocera. At present, the energy conversion rate of Nocera device is still relatively low, only 4.7% in the laboratory, so the generation of hydrogen is relatively slow, but many scientists including Nocera are confident that the device will be developed to an industrial level relatively quickly.
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