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Rapid heating and structural regulation: The flash Joule heating (FJH) technology used in the paper completes the structural transformation of anthracite in a very short time (20 seconds) through instantaneous high temperature (1300°C) and rapid cooling. The 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 regulation of the microstructure of the material. Both use the non-equilibrium state brought about by rapid heating to promote the optimization of the internal structure of the material and provide favorable conditions for the adsorption and storage of sodium ions.
Regulation of defects and pore structure: In the research of the paper, the FJH technology not only suppressed the graphitization trend of soft carbon through thermal shock, but also generated a large number of closed nanopores. The Flash Joule Heating Machine technology is also commonly used to regulate the defects and pore structure of materials in the preparation of other materials. For example, in the preparation of carbon-based materials such as graphene, defects can be introduced and the pore size can be regulated by rapid heating. This precise control of defects and pore structures is crucial to improving the electrochemical performance of materials, and helps optimize the sodium storage capacity and cycle stability of sodium-ion battery negative electrode materials.
High efficiency and low cost: The FJH technology mentioned in the paper can complete the structural transformation of materials in a short time and is highly efficient. The Flash Joule Heating Machine technology also greatly shortens the material preparation time and improves production efficiency with its rapid heating and cooling characteristics. The combination of the two can further improve the efficiency of material preparation, reduce production costs, and provide technical support for the large-scale production of high-performance sodium-ion battery negative electrode materials.
Environmental friendliness: The FJH technology in the paper avoids the long-term energy consumption and possible environmental pollution in the traditional high-temperature treatment process. The Flash Joule Heating Machine technology does not require the use of solvents or reaction gases during the material synthesis process, and is an environmentally friendly preparation method. The combination of the two helps to achieve a greener and more sustainable material preparation process, which meets the current requirements of environmental protection and sustainable development.
Further optimization of material properties: Flash Joule Heating Machine technology can be applied to the subsequent treatment of soft carbon materials rich in closed nanopores prepared in the paper. Through further rapid heat treatment, the crystal structure and defect distribution of the material can be optimized to improve its sodium storage performance and cycle stability. For example, more uniform defect distribution and richer active sites can be achieved through FJH technology to enhance the adsorption and diffusion dynamics of sodium ions.
Development of new negative electrode materials: Combine the rapid synthesis capability of Flash Joule Heating Machine and the structural regulation advantages of FJH technology in the paper to explore the development of new negative electrode materials for sodium ion batteries. For example, try to use FJH technology to perform rapid heat treatment and structural optimization on other types of carbon materials or composite materials to achieve higher specific capacity and better rate performance.
Optimization and standardization of process parameters: In-depth study of the synergistic mechanism of Flash Joule Heating Machine technology and FJH technology in the paper 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 support for the commercial production and application of sodium-ion battery negative electrode materials.
Electrospinning Nanofibers Article Source:
https://doi.org/10.1016/j.cej.2025.159331
