Recently, a team led by 1109 Researchers from Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and Wu Zhongshu, a researcher from DNL21T3, made new progress in the research of electrode materials for high specific capacitance supercapacitors and prepared high-nitrogen The amount of conductive conjugated microporous polymer, the relevant results published in the "German Applied Chemistry".
As a new type of environmentally friendly energy storage device, supercapacitors have been widely used in HEVs. Due to their large electric charge stored on the electrodes through the double layer mechanism, supercapacitors are finding electrode materials with high surface area and high conductivity (usually porous Carbon materials), the key to increasing device capacity, researchers found that nitrogen-doped carbon materials can be introduced into pseudocapacitors via nitrogen atoms to store more electricity.Research literature based on nitrogen-doped carbon materials, high-performance Electrode materials need to have both high specific surface area and high nitrogen doping, both of which are often in the same type of material. In advanced electrode materials currently reported for supercapacitors, the maximum specific surface area typically does not exceed 3000 m <2> / g, while the material with a higher specific surface area nitrogen doping amount is usually less than 5 at%.
To overcome the above problems, the cooperative team jumped out of the scope of nitrogen-doped carbon materials to TCNQ (7,7,8,8-tetracyanoquinodimethane) as a monomer, in ionic thermal conditions to obtain a series of polymerization based on Covalent triazine framework structure, high specific surface area and high nitrogenconductivityconjugated microporous polymer, and its application to the supercapacitor electrode material.Among them, at the same time with a high specific surface area of 3663m2 / g and 8.13% Of the high nitrogen content of the conductive conjugated microporous polymer to obtain a higher specific capacity 383F / g, significantly higher than the commercial activated carbon specific capacity (100-200F / g), and has significant cyclic stability of this work For the first time, conductive conjugated microporous polymers with high surface area and high nitrogen content were obtained for the first time, which provided a new idea for the development of ultracapacitor electrode material with higher performance.
1109 Group committed to the simulation of conjugate microporous polymer design and synthesis applications, the development of different applications of conjugate microporous polymer series of materials, such as hydrogen storage materials, water treatment materials, carbon dioxide capture and conversion materials. DNL21T3 commitment to high We have developed a series of two-dimensional materials such as graphene and doped graphene, melezepin, MXene, polymer and oxide nanosheets by developing specific energy, flexible, and miniaturized supercapacitors. This cooperation has given full play to two The strength of the team together around a major research direction, the perfect combination of the two fields, is expected to promote the cross-fusion of microporous polymer and supercapacitor. The research has been funded by the National Natural Science Foundation of China, the state's key research and development programs.
