For more than one hundred years, the students of CCA have created a great deal of fruits with knowledge and wisdom and wrote many firsts in modern history, which are the wisdom of personnel training, the wisdom of scientific research, the wisdom of serving the society and the wisdom of winning glory for the country The News Network launched a special column titled 'Jiaotong University Intelligence', focusing on the wisdom of the people of Jiaotong University and showing the great contributions made by the students of CCU to national development and social progress.
Recently, Nature Communications, a world-renowned academic journal, published the latest research results of Deng Tao team of Shanghai Jiaotong University School of Materials Science and Engineering in the field of solar thermal storage, which was followed by Nature Energy, Advanced Materials, Journal of the American Chemical Society (JACS) and other achievements in the field of new thermal materials after another innovative breakthrough.Shanghai Jiaotong University is the first author of this article and the only correspondent unit.
The team proposed a new rapid thermal solar thermal storage solution by developing a novel solid-liquid phase-change thermal storage composite to dynamically control the distribution of nano-photothermal materials in the phase-change thermal storage matrix. This method not only realizes A direct solar thermal conversion of solar energy, but also significantly improve the thermal storage rate, to ensure the high energy density of the thermal storage system for the development of high-performance solar thermal storage and solar thermal technology provides a new research ideas. Associate Professor Tao Peng and Professor Deng Tao and associate professor Bao Hua of Michigan College of National Chiao Tung University are the authors of the thesis. The authors are Wang Zhongyong and Ye Qinxian, master students of Jiaotong University School of Materials, and Tongzhen, a doctoral student at Michigan College of China National Chiao Tung University.
Thermal storage is the key technology to solve the shortcomings of intermittent solar energy and low energy density, which is the key to the development of solar thermal technology.However, the current thermal storage materials generally have low thermal conductivity, which severely limits the storage rate of thermal energy, Has been one of the most important factors restricting the development of solar thermal storage technology and the promotion of solar thermal utilization.Differing from the traditional method of improving the thermal storage rate by increasing the thermal conductivity of thermal storage materials, the project team proposed a method based on solar photons in thermal storage materials In the rapid transmission of solar energy directly into the phase change material stored in the new method, the establishment of the corresponding physical model reveals a new thermal storage mechanism to solve the sun photons by photothermal materials led to the gradual decline in the transmission speed of the problem , The team proposed the use of magnetic field to dynamically control the distribution of photothermal materials in phase change thermal storage materials to enhance photon transfer and photothermal conversion so as to realize long distance, high efficiency and uniform storage of solar photothermal in phase change materials. , The program also greatly reduces the amount of nano-materials in composite materials, thus ensuring the high heat storage system Heat capacity, high stability.
The research work was supported by such projects as National Key Research and Development Program (No. 2017YFB0406100), National Natural Science Foundation of China (51403127, 51521004, 51420105009, 21401129) and Shanghai Chenguang Talent Program (15CG06).
