Wearable smart device is one of the important symbols of future scientific and social progress and also a major strategic demand of the country, and its long-term battery life relies on high-performance flexible energy storage battery.Aiming at how to improve the flexibility and capacity of electrode materials, Problem, under the guidance of Chinese Academy of Sciences Li Yuliang, the Chinese Academy of Sciences Qingdao Institute of Bioenergy and Process New Energy Carbon Materials team and the Chinese Academy of Sciences Institute of Chemistry, developed a graphite alkynyl molecular material, changing the traditional concept of battery materials, Achieved high-performance flexible battery preparation. The research is highly original, published online at Nature Communications.
Graphite alkyne has the key function to the transport of electrons, ions and substances due to its special sp hybridized electronic structure and the naturally formed super-large hole structure, showing the nature of irreplaceable other materials.For the preparation of high performance devices In particular, the wearable device has important scientific research significance and is considered as the key material for the next generation of devices such as energy, optoelectronics, catalysis and microelectronics, and is highly concerned by the world. Based on the previous work on graphyne , Change the traditional concepts, the innovative development of graphite alkyne-based interdisciplinary research, focusing on the graphene alkyne energy and structure problems, considering the graphene system and the natural π-ion transport channels, the use of hydrogen instead of acetylenic bonds to improve The molecular channel diameter of graphite alkyne ion transport increased the active sites for storing metal ions, realized the flexibility and high capacity of materials for lithium storage and sodium storage, and explained the self-transition of graphite alkyne conductive skeleton from the molecular level and Lithium, sodium ions embedded prolapse association, established a new concept, to solve some of the important in this area Learn the problem, access to excellent performance electrochemical lithium storage, sodium performance, theoretical calculations confirm the above experimental results and theoretical analysis of the process of consistency .In particular, the material in the sodium ion battery test research demonstrated electrochemical storage Sodium capability has the leading position in the same kind of material and is entirely possible to become a new generation of high performance and flexible energy storage battery. This will bring new perspectives and new ideas for the future research of electrochemical energy storage devices in our country and will actively promote China's 13th Five-Year Plan New energy and new materials research and planning progress.
The research has obtained the support of the National Natural Science Foundation of China (NSFC) major projects and programs, the Chinese Academy of Sciences cutting-edge scientific research plan, Chinese Academy of Sciences 'Hundred Talents Program' and the Natural Science Foundation of Shandong Province Outstanding Youth Fund.
