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High Temperature Thermal Shock and Material Modification: Prof. Su Yuefeng's team used ultra-fast Joule heating technology to dope and modify ultra-high nickel cathode materials, which significantly improved the structural, electrochemical and thermal stability of the materials through the introduction of Sc doping and the formation of a stable cationic mixed layer in seconds.The Flash Joule Heating Machine (FJH) technology is also able to rapidly The Flash Joule Heating Machine (FJH) technology is also capable of rapidly heating materials to high temperatures, triggering the reorganization of the internal structure of the material and the formation of defects, and realizing the precise control of the microstructure of the material. Both utilize the intense reaction conditions brought about by high temperature thermal shock to promote efficient modification of the target material.
Rapid heating and performance optimization: Ultra-fast joule heating (FJH) technology realizes efficient modification of ultra-high-nickel cathode materials through rapid heating, optimizes their crystal structure and interfacial properties, and significantly improves electrochemical performance.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 rapid heating can modulate the defect density and electronic structure of the material, thus optimizing its electrical conductivity and performance, and thus optimizing its electrical conductivity. in order to optimize the conductivity and chemical activity of the material.
High efficiency and low cost: Ultra-fast Joule heating technology can complete the modification of ultra-high-nickel cathode materials in a short time, which is highly efficient, while FJH technology also significantly shortens the material preparation time, improves the production efficiency, and reduces the production cost with its fast heating and cooling characteristics. Combined use of the two can further enhance the efficiency and performance of material preparation, reduce production costs, and provide technical support for the large-scale production of high-performance lithium-ion battery materials.
Environmental friendliness: Ultra-fast Joule heating technology avoids the long time energy consumption and environmental pollution problems in the traditional high temperature treatment process.FJH technology does not require the use of solvents or reaction gases during material synthesis and has low energy consumption, which is in line with the current requirements of environmental protection and sustainable development.
Further optimization of material properties: FJH technology can be applied to the subsequent treatment of ultra-high nickel cathode materials treated by ultra-fast joule heating technology to optimize the crystal structure and defect distribution of the materials and improve their electrochemical properties and stability through further rapid heat treatment. For example, more uniform defect distribution and stronger metal-carrier interactions are realized by FJH technology to enhance the material's sintering resistance and long-term stability.
Development of new battery materials: Combining the rapid synthesis capability of FJH technology and the structure modulation advantage of ultra-fast Joule heating technology, explore the development of new lithium-ion battery materials. For example, try to put other types of metal oxides or composite materials through the FJH technology for rapid heat treatment and structure optimization, and then use the ultra-fast Joule heating technology for modification to achieve higher performance and more excellent application effects.
Optimization and standardization of process parameters: In-depth study of the synergistic mechanism between FJH technology and ultra-fast Joule heating technology in the material preparation process, and optimization of process parameters, such as heating temperature, heating time, current density, and so on. Establish a standardized process flow to ensure the stability and consistency of material performance, and provide a reliable technical guarantee for the commercial production and application of lithium-ion battery materials.
Electrospinning Nanofibers Article Source:
https://doi.org/10.1016/j.jechem.2024.11.047
