Recently, a research team led by Deng Weiqiao and Wu Zhongshuai from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, has made significant progress in developing electrode materials for high-volume supercapacitors. They successfully synthesized conductive conjugated microporous polymers with an exceptionally high specific surface area and nitrogen content. The findings were recently published in "Angewandte Chemie International Edition."
Supercapacitors are widely used in hybrid electric vehicles due to their ability to store large amounts of energy through the electric double-layer mechanism. To enhance the performance of these devices, it is crucial to develop electrode materials that offer both a large surface area and excellent electrical conductivity.
The research team utilized TCNQ (7,7,8,8-tetracyano-p-quinodimethane) as a monomer, polymerizing it under ionic liquid conditions to create a series of covalent triazine-based frameworks. These structures exhibit high porosity, conductivity, and nitrogen content, making them ideal candidates for supercapacitor electrodes. Among the synthesized materials, one demonstrated an ultrahigh specific surface area of 3,663 m²/g and a nitrogen content of 8.13%, achieving a remarkable specific capacitance of 383 F/g. This value far exceeds that of commercial activated carbon and shows excellent cycling stability, proving its potential for real-world applications.
This breakthrough could pave the way for more efficient and durable energy storage systems, particularly in next-generation electric vehicles and portable electronics. The team’s work highlights the importance of designing advanced porous materials that can meet the growing demands of modern energy technologies.
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