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High-temperature thermal shock and material modification: Associate Professor Huang Kai's team adopted the cyclic Joule Heating (CJH) strategy to achieve the directed electron modulation (DEM) between iridium oxide clusters and cobalt hydroxides through rapid heating and cooling, optimizing the electronic structure and reaction kinetics of the active center. Flash Joule Heating Machine (FJH) technology can also quickly heat the material to a high temperature, triggering the reorganization of the internal structure of the material and the formation of defects, and achieve precise control of the microstructure of the material. Both use the violent reaction conditions brought about by high-temperature thermal shock to promote efficient modification of the target material.
Rapid heating and performance optimization: The CJH strategy achieves efficient preparation of catalysts through rapid heating, optimizes the electronic structure and reaction kinetics of catalysts, and significantly improves the performance of oxygen evolution reaction (OER). FJH technology is also commonly used for rapid heating and performance optimization in the preparation of other materials. For example, in the preparation of carbon-based materials such as graphene, the defect density and electronic structure of the material can be regulated by rapid heating, thereby optimizing its conductivity and chemical activity.
High efficiency and low cost: CJH strategy can complete the preparation of catalysts in a short time and is highly efficient. FJH technology also greatly shortens the time of material preparation, improves production efficiency and reduces production costs with its characteristics of rapid heating and cooling. The combination of the two can further improve the efficiency and performance of catalyst preparation, reduce production costs, and provide technical support for large-scale production of high-performance catalysts.
Environmental friendliness: CJH strategy avoids the high energy consumption and environmental pollution problems in traditional methods. FJH technology does not require the use of solvents or reaction gases during material synthesis and has low energy consumption. The combination of the two helps to achieve a greener and more sustainable catalyst preparation process, which meets the current requirements of environmental protection and sustainable development.
Further optimization of catalyst performance: FJH technology can be applied to the subsequent treatment of catalysts treated by CJH strategy. Through further rapid heat treatment, the crystal structure and defect distribution of the catalyst can be optimized to improve its catalytic activity and stability. For example, more uniform defect distribution and stronger metal-support interaction can be achieved through FJH technology, enhancing the anti-sintering ability and long-term stability of the catalyst.
Development of new catalysts: Combine the rapid synthesis capability of FJH technology and the electronic regulation advantage of CJH strategy to explore and develop new catalysts. For example, try to use FJH technology to quickly heat treat and optimize the structure of other types of metal oxides or composite materials, and then use CJH strategy for electronic regulation to achieve higher performance and better application effects.
Optimization and standardization of process parameters: In-depth study of the synergistic mechanism of FJH technology and CJH strategy in the catalyst preparation process, optimize process parameters such as heating temperature, heating time, current density, etc. Establish a standardized process flow to ensure the stability and consistency of catalyst performance, and provide reliable technical support for the commercial production and application of catalysts.
Electrospinning Nanofibers Article Source:
https://doi.org/10.1002/adfm.202416385
