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High-temperature thermal shock and material synthesis: Min-Sik Park's team used microwave-assisted carbon thermal shock technology to prepare porous silicon/carbon composite materials (p-Si@C). Through microwave radiation, the fusible polyacrylonitrile copolymer (co-PAN) was decomposed into carbon by rapid heating, and the silicon particles were induced to reorganize, forming a structure in which nano-scale silicon particles were embedded in the porous carbon framework. 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 realizing precise control of the microstructure of the material. Both of them use the violent reaction conditions brought by high-temperature thermal shock to promote the efficient synthesis of the target material.
Rapid heating and performance optimization: Microwave-assisted carbon thermal shock technology achieves efficient preparation of p-Si@C composite materials through rapid heating, optimizes its porous structure and silicon particle distribution, and significantly improves the electrochemical performance of lithium-ion batteries. 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: Microwave-assisted carbon thermal shock technology can complete the preparation of composite materials 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 due to its rapid heating and cooling characteristics. The combination of the two can further improve the efficiency and performance of material preparation, reduce production costs, and provide technical support for large-scale production of high-performance battery materials.
Environmental friendliness: Microwave-assisted carbon thermal shock technology avoids the long-term energy consumption and environmental pollution problems in traditional high-temperature treatment, and does not require the use of solvents or reaction gases during material synthesis. FJH technology also does not require the use of solvents or reaction gases, and has low energy consumption, making it an environmentally friendly preparation method.
Further optimization of material properties: FJH technology can be applied to the subsequent treatment of p-Si@C composite materials treated with microwave-assisted carbon thermal shock technology. Through further rapid heat treatment, the crystal structure and defect distribution of the material can be optimized to improve its electrochemical performance and stability. For example, the FJH technology can achieve a more uniform defect distribution and stronger metal-carrier interaction, and enhance the material's anti-sintering ability and long-term stability.
Development of new battery materials: Combine the rapid synthesis capability of FJH technology and the structural regulation advantages of microwave-assisted carbon thermal shock technology to explore and develop new battery materials. For example, try to use FJH technology to perform rapid heat treatment and structural optimization on other types of silicon-based materials or composite materials, and then use microwave-assisted carbon thermal shock technology to synthesize them 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 microwave-assisted carbon thermal shock technology in the material preparation process, and optimize process parameters such as heating temperature, heating time, current density, etc. Establish a standardized process flow to ensure the stability and consistency of material performance, and provide reliable technical guarantees for the commercial production and application of battery materials.
Electrospinning Nanofibers Article Source:
https://doi.org/10.1016/j.est.2024.114983
