Flash Joule Heating Machine: Preparation of highly conductive RGO films by 60 s 2750 K Joule heating

Similarity of Technical Principles and Applications

High Temperature Thermal Shock and Material Modification: Dr. Yang Liu's team prepared highly dispersed face-centered cubic copper-cobalt alloy (Cu2.5Co) using carbon thermal shock (Joule heating) technology, and achieved efficient synthesis of the alloy and optimization of the catalytic properties by rapid heating. Prof. Liangbing Hu's team used the ultra-high-temperature reduction technique of Joule heating to instantaneously heat the pre-treated RGO film to 2750 K, realizing the efficient repair of defects and high crystallization of the structure, and significantly improving the electrical conductivity of the film, while the Flash Joule Heating Machine (FJH) technique can also rapidly heat the material to high temperatures, triggering the reorganization of the internal structure and the formation of defects, realizing the electrical conductivity of the film. The Flash Joule Heating Machine (FJH) also rapidly heats the material to high temperatures, triggering the reorganization of the material's internal structure and the formation of defects, which enables precise control of the microstructure. All three technologies utilize the intense reaction conditions brought about by high-temperature thermal shock to promote efficient modification of the target material.

Rapid heating and property optimization: Carbon thermal shock technology realizes the efficient preparation of Cu-Co alloys through rapid heating, optimizes their electronic structure and catalytic properties, and significantly improves the efficiency of ammonia production by nitrate reduction. Ultra-high-temperature reduction technology realizes the efficient reduction of RGO film through rapid heating, optimizes its electrical conductivity, and significantly improves its electrical conductivity to 3112 S/cm. 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 be used to regulate the defect density and electronic structure of the material to optimize its electrical conductivity and chemical activity. chemical activity.

Complementary technical advantages

High efficiency and low cost: both Carbon Thermal Shock and Ultra High Temperature Reduction technologies can complete the preparation of materials in a short time, which is highly efficient. the FJH technology also significantly shortens the time of material preparation, improves the production efficiency, and reduces the production cost with its rapid heating and cooling characteristics. The combined use of the three 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 materials.

Environmental friendliness: Carbon thermal shock technology and ultra-high temperature reduction 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.

Future directions for combining research and application

Further optimization of material properties: FJH technology can be applied to the subsequent treatment of materials treated by carbon thermal shock technology and ultra-high temperature reduction technology to optimize the crystal structure and defect distribution of the materials, and improve their catalytic activity and conductivity properties through further rapid heat treatment. For example, more homogeneous defect distribution and stronger metal-carrier interactions are realized by FJH technology to enhance the sintering resistance and long-term stability of the materials.

Development of new materials: Combining the rapid synthesis capability of FJH technology and the structure modulation advantages of carbon thermal shock technology and ultra-high temperature reduction technology, we explore the development of new catalytic and conductive materials. For example, try to put other types of metal or non-metal alloys through the FJH technology for rapid heat treatment and structure optimization, and then synthesize them using the carbon thermal shock technology and ultra-high temperature reduction technology 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 carbon thermal shock technology and ultra-high temperature reduction technology in the process of material preparation, and optimization of process parameters, such as heating temperature, heating time and current density. Establish a standardized process flow to ensure the stability and consistency of the material properties, and provide a reliable technical guarantee for the commercial production and application of the materials.

Electrospinning Nanofibers Article Source:

https://doi.org/10.1021/acs.nanolett.6b00743