According to foreign websites, an international research team has succeeded in increasing the efficiency of direct hydrogen decomposition of water to 19%, creating a new world record. They have prepared solar energy by coating nanoparticles with ruthenium nanoparticles and crystalline titanium dioxide. The battery was connected in series to achieve this record. The research team from the California Institute of Technology, Cambridge University, Ilmenau University of Technology and the Fraunhofer Institute for Solar Energy participated in the development work. Part of the experiment in the solar fuel of Helmholtz-Zentrum in Berlin The institute is conducting.
Researchers have discovered that the use of solar cells combined with a catalyst and an additional functional layer to form a 'monolithic photoelectrode' allows for a hydrolysis reaction: The photocathode is immersed in an aqueous medium, and when the light falls on it, hydrogen is generated on the front side. Will produce oxygen.
Transparent coating
The focus of this research is also on a single-chip photocathode. The research team combined an additional functional layer with a high-efficiency series cell made of III-V semiconductor to significantly reduce the surface reflectance of the cell, thereby avoiding light absorption and reflection. Energy loss. The research team achieved more than 14% efficiency in 2015. Today, the crystalline titanium dioxide layer replaces the anti-corrosion top layer, which not only has excellent anti-reflection properties, but also directly attaches the catalyst particles to its surface. The person also used a new electrochemical method to produce a ruthenium nanoparticle catalyst for catalyzed water decomposition. The particles are only 10 nanometers in diameter and optically almost transparent, so they are very suitable for photolysis of water.
