Recently, the international well-known academic journal Advanced Materials (the latest influencing factor 19.791) published the paper Using Buchwald-Hartwig couples to form conjugated microporous polymer networks for high-efficiency supercapacitors written by Professor Zhu Meifang-Professor Liao Yaozu's team and Professor Arne Thomas of Berlin University of Technology, Germany. Energy Storage (Efficient Supercapacitor Energy Storage Using Conjugated Microporous Polymer Networks Synthesized from Buchwald-Hartwig Coupling (DOI: 10.1002/adma. 201705710) reported the latest progress made by the team in the field of energy storage materials. Professor Liao Yaozu is the first author and co-author with Professor Anatoles. Links to papers: http://onlinelibrary.wiley.com/doi/10.1002/adma.201705710/full

  Porous conjugated polymers are new functional materials with self-porous structure enclosed by fully conjugated polymer networks. They are characterized by stable pore structure, controllable photoelectric properties and diverse synthetic pathways. Since its emergence in 2007, people have focused on how to improve its specific surface area, pore structure and gas adsorption efficiency. Recently, the development of electrode materials with double electric layer and pseudocapacitive energy storage mechanism has become a research hotspot by utilizing their intrinsic pore structure and redox activity.

  The existing energy structure dominated by fossil fuels has led to serious energy crisis, environmental pollution and greenhouse effect. It is urgent to find alternative energy storage and conversion methods. As a new type of energy storage, supercapacitors have attracted much attention due to their environmental friendliness, high energy density, fast charging and discharging speed and good cycle stability. Its energy storage mechanism includes two kinds of energy storage mechanisms: double layer and pseudocapacitor. The corresponding typical materials are carbon materials and conductive polymers. However, the specific capacitance of the former is not high, while the cycle stability of the latter is poor. How to exert two energy storage mechanisms and develop electrode materials with high specific capacitance and high cyclic stability is a key scientific issue in this field.

  It is reported that the team proposed the Buchwald-Hartwig coupling method to prepare the porous conjugated polymer of aminoanthraquinone with nitrogen in the main chain and oxygen in the side group (up to 20% of N and O content), optimize the redox activity through molecular design, and obtain higher pseudocapacitance; use the porous conjugated polymer skeleton to have its own porous structure, promote electrolyte transport, and avoid the swelling and shrinkage of the electrode materials; The specific capacitance of the three-electrode supercapacitor can reach 576F/g at 1A/g current density, and it can still maintain 85% initial capacitance after 6000 cycles. The operating window width, power and energy density of the asymmetric two-electrode supercapacitor are 1300W/kg and 60Wh/kg, respectively, and the performance of the three-electrode supercapacitor has no attenuation after 2000 cycles. This work provides a new idea for rational design of organic porous materials for electrochemical energy storage.

       Professor Liao Yaozu, as an important member of the pioneer fiber and composite technology innovation team of the Ministry of Science and Technology led by Professor Zhu Meifang, has carried out a series of frontier research work in the field of functional conjugated polymers since he joined Donghua University in 2015. Mainly include: Adv. Mater. 2018, DOI: 10.1002/adma. 201705710; Chem. Mater. 2017, 29, 4885-4893; ACSMacroLett. 2017, 2017, 6, 1444-1450; ACSAppl. Mater. Interfaces 2017, 9, 38390-38400; ACSAppl. Mater. Interfaces 2017, 9, 38390-38390-38400; Polym. Chem. 2017, 2017, 8, 7240-7247; Macoleoleromes 2016, 49, 6322-6333; Chem. Engin Engin. Engin. Chem. Engin. Enginein. 2012016, Rem. EngEngramacroLett. 20111, 20111, 2016, 4955-18) and fluorescence detection Basic applications of functional conjugated polymers (Chem. Sci. 2015, 6, 7190-7200) have been applied for many Chinese invention patents. Relevant research work has been supported by the National Natural Science Foundation of China's Face-to-Face Youth Project, Shanghai Key R&D Program, Shanghai Pujiang Talents Program, the Central University's Key Funds for Basic Scientific Research Operations, and Donghua University's High-level Talents Start-up Funds.