Ultrasonic Spraying of Electrolytic Water Catalyst
Ultrasonic spraying: a revolutionary force in the preparation of electrolytic water catalysts
In the current booming development of the hydrogen energy industry, electrolysis of water for hydrogen production, as a key technology, cannot achieve breakthroughs in efficiency and cost without high-performance catalysts. The electrolytic water catalyst accelerates the hydrogen evolution (HER) and oxygen evolution (OER) reactions by reducing the activation energy of the reaction, which is the core element for improving the efficiency of electrolytic water. The ultrasonic spraying technology of Cheersonic is bringing revolutionary changes to catalyst preparation with its unique advantages.
1. Multivariate system of electrolytic water catalyst
- Precious metal catalyst
Platinum (Pt) has become the “gold standard” for HER reactions due to its ultra-high hydrogen evolution catalytic activity and stability, which can significantly reduce the overpotential of hydrogen generation. However, its high price limits its large-scale application. Ruthenium (Ru), iridium (Ir), and their oxides are high-quality catalysts for OER reactions, exhibiting excellent performance in acidic environments. However, their scarcity and high cost also limit their widespread use. - Non precious metal catalysts
Transition metal oxides such as manganese dioxide (MnO ₂) and iron oxide (Fe ₂ O3) provide multiple active sites due to their rich oxidation states and variable electronic structures. MnO ₂ exhibits good OER activity under alkaline conditions and has a significant cost advantage. Transition metal sulfides such as molybdenum disulfide (MoS ₂) have excellent electron transport properties due to their layered structure, and have great potential in HER reactions after structural regulation. Transition metal phosphides such as nickel phosphide (Ni ₂ P) have good catalytic effects on HER and OER in alkaline systems. Amorphous alloy catalysts such as nickel boron (Ni-B) alloy exhibit excellent catalytic activity and corrosion resistance due to their unique structure and electronic properties. - Composite catalyst and bifunctional catalyst
Metal metal oxide composite catalysts combine precious metals with transition metal oxides, such as platinum nanoparticles loaded on titanium dioxide (TiO ₂), balancing activity and cost. Carbon based composite catalysts utilize the high conductivity and large specific surface area of carbon materials such as graphene and carbon nanotubes to enhance catalyst performance. Dual functional catalysts, such as transition metal based layered double hydroxides (LDHs), can catalyze both HER and OER simultaneously, which is of great significance for simplifying the device and reducing costs.
2. Application of Ultrasonic Spraying in Catalyst Preparation
- Optimization of precious metal catalyst loading
Traditional methods for preparing precious metal catalysts are prone to problems such as particle aggregation and uneven distribution, resulting in waste of active sites. The ultrasonic spraying technology of Cheersonic atomizes precious metal salt solution into nano-sized droplets through high-frequency vibration, and uniformly sprays them on the surface of the carrier. Taking platinum supported catalysts as an example, ultrasonic spraying can evenly disperse platinum particles with a particle size controlled at 5-10nm. Compared with traditional impregnation methods, the exposure of active sites is increased by 40%, significantly improving catalytic efficiency while reducing the amount of precious metals used and lowering costs. - Shape control of non precious metal catalysts
For non precious metal catalysts such as transition metal oxides and sulfides, ultrasonic spraying can accurately control the spraying amount and atomization degree of the precursor solution, achieving morphology control of the catalyst. When preparing molybdenum disulfide catalyst, by adjusting the spraying parameters, a nanosheet structure with a large number of edge active sites can be formed. Compared with traditional methods, HER catalytic activity is increased by 30%. In addition, this technology can form a porous structure on the catalyst surface, increase the specific surface area, and promote the contact between reactants and active sites. - Uniform composite catalyst
Ultrasonic spraying can uniformly mix and spray different components when preparing metal metal oxide and carbon based composite catalysts. In the preparation of platinum titanium dioxide composite catalysts, platinum nanoparticles can be uniformly embedded on the surface of titanium dioxide support to avoid aggregation; In the preparation of carbon based composite catalysts, transition metals can be uniformly loaded on the surface of graphene to ensure the continuity of electron transport channels and improve overall catalytic performance. - Performance enhancement of bifunctional catalyst
For bifunctional catalysts, ultrasonic spraying can achieve precise proportioning and uniform coating of multiple components. In the preparation of layered double hydroxide (LDHs) catalysts, by controlling the spraying process, the metal ions are uniformly distributed to form a structured layered material, enhancing the bifunctional catalytic activity for HER and OER reactions. Compared with traditional synthesis methods, the overall catalytic efficiency is improved by 25%.
3. The significant advantages of ultrasonic spraying technology
Compared with traditional catalyst preparation methods, ultrasonic spraying technology has significant advantages. In terms of accuracy, nanoscale coating thickness control can be achieved, with catalyst loading error less than ± 5%, ensuring stable performance between batches. The material utilization rate is over 90%, reducing the waste of expensive materials such as precious metals. Its process has strong flexibility and can adapt to various solvent systems and material types. Whether it is laboratory trials or industrial mass production, it can quickly adjust process parameters to meet different needs. In addition, catalysts prepared by ultrasonic spraying have better mechanical stability and sintering resistance, extending their service life and reducing replacement frequency.
With the continuous improvement of the requirements for electrolysis water technology in the hydrogen energy industry, ultrasonic spraying technology will continue to promote the development of electrolysis water hydrogen production towards high efficiency and low cost with its unique advantages in catalyst preparation, injecting strong impetus into the global clean energy transformation.
About Cheersonic
Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.
Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.
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