New breakthrough in solar hydrogen production process energy conversion efficiency of 22%
The research team of Monash University in Australia has created a solar energy hydrogen production method with energy conversion efficiency breaking the world record. This method achieves a conversion rate of 22% and lays the foundation for the promotion of cheap and efficient hydrogen production technology. An important step in the production of hydrogen energy. Monash University's solar hydrogen production technology is a breakthrough in hydrogen production by photoelectrochemical decomposition. The photoelectrochemical method of using solar light to irradiate pyrolysis water to generate hydrogen energy has attracted much attention due to its simple principle, environmentally friendly process, and high hydrogen fuel energy density. The key to this technology is the synthesis of high-efficiency, low-cost, long-life photocatalytic materials. However, due to the limitations of previous technologies and materials, the solar energy efficiency of this preparation method is relatively low. Professor Leone Spiccia of the Monash Chemical Institute who led the scientific research team introduced the “photoelectrochemical hydrolysis method for hydrogen production is cheap, clean, and rich in sources, the latest technological breakthroughs have significantly promoted the realism of large-scale hydrogen productionâ€. Hydrogen production by chemical decomposition is a breakthrough in materials. The application of foamed nickel electrode material greatly increases the surface area of ​​the electrode, thereby effectively utilizing the energy of the spectrum of sunlight and improving the photocatalytic performance of sunlight. At the same time, the team adopted the most efficient photovoltaic panel, which greatly improved the utilization of solar photovoltaic conversion. Based on the combination of the above two points, the new technology has made the conversion efficiency of photoelectric hydrogen production reach a breakthrough of 22% of the world record. The relevant results were published in the recently published "Energy and Environmental Science" publication.
In chemical reactions reactants can change the chemical reaction rate (increase or decrease) without changing the chemical equilibrium, and its own quality and chemical properties of the chemical reaction did not change before and after the catalyst called (solid catalyst also called catalyst). According to statistics, about 90% of the industrial process using catalysts, such as chemical, petrochemical, biochemical, environmental protection and so on. [1] A wide range of catalysts, according to the state can be divided into liquid catalyst and solid catalyst; according to the reaction system is divided into homogeneous phase homogeneous catalyst and heterogeneous catalyst, homogeneous catalyst with acid, alkali, soluble transition metal compounds and peroxides catalyst. Catalysts occupy an extremely important position in the modern chemical industry. For example, three catalysts, namely, an iron catalyst for ammonia production, a vanadium catalyst for sulfuric acid production, ethylene polymerization, and three synthetic materials such as butadiene rubber are used .
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