The use of photocatalysts to split water directly into hydrogen and oxygen in a photolysis bath is considered one of the most important methods for obtaining hydrogen energy. Sui Fu University School of Materials Science and Engineering Cui Wei's group designed a perovskite solar cell-driven photolysis water composite system, can make the photolysis of water to hydrogen conversion efficiency of 6.2%, is the use of ordinary methods of conversion efficiency three times. The relevant research results were published in the recently published "Science Progress" magazine. Dr. Qiu Yongcai and Dr. Chen Wei, the principal investigators of the study, said in an interview with a reporter from Science and Technology Daily that photolysis of water can be regarded as an artificial photosynthesis process by using photocatalysts to directly split water into hydrogen and oxygen in a photolysis tank. However, photocatalytic water-producing hydrogen suffers from long-term problems such as low conversion efficiency and poor stability of photocatalysts. The efficiency of using an ordinary photolysis water chemistry tank to decompose water is only about 2%. In order to improve the conversion efficiency of light to hydrogen fuel, the research group designed a new type of photocatalyst nanostructured electrode and deposited a molybdenum-doped strontium bismuth tantalum film with excellent photolytic water properties on a conductive nanocone array. As a result, the photolysis water electrode based on a nanometer cone array has a large performance improvement. Chen Wei introduced that, compared with the planar structure of the traditional photolysis water electrode, the nano-pyramid array structure of the electrode has better light utilization, charge collection and light limiting characteristics. Not only that, the photolysis basin based on the nano-taper array will have a good light utilization effect at different times of the day. In addition, in order to make this performance-enhanced optical solution pool able to work independently without the need of external power supply, they designed a composite system that uses solar cells to directly drive the photolysis tank. The solar cell of the composite system is composed of a perovskite material having the best known performance. The output of the perovskite solar cell after absorbing sunlight can be directly used to drive the decomposition water of the photolysis tank, thereby achieving a light to hydrogen conversion efficiency of 6.2%. In the future, using the composite system of the perovskite solar cell photolysis tank, the energy conversion efficiency of light to hydrogen is expected to reach a new height, thereby providing an important way for obtaining green hydrogen energy. According to reports, the authors of the paper are Tsinghua University and the Suzhou Nano Institute of the Chinese Academy of Sciences, Professor Zhang Yuegang of the State "One Thousand Talents Program" and Professor Cui Wei of Stanford University. The study also received the support of Academician Fan Shoushan of Tsinghua University. (Reporter Jiang Jing) smart light,Rgb Led Strip Lights,Smart Led Strip Lights,Color Changing Led Strip Lights Guangdong Smart Street Lighting Co., Ltd , https://www.fldlight.com