Triple Symmetric Organic Conjugated Molecules Based Porous Polymers And Application In Electrochemical Energy Storage

Two-dimensional organic porous polymers have become a promising functional material thanks to their excellent properties such as adjustable frame structure,light weight,flexibility,high specific surface and good semiconductor.Two-dimensional polymers have been proven to be well applied in micro-supercapacitorsdue to their planar layered structure and unique electronic structure.In addition,due to the development of the emerging electronics industry,the performance requirements for electrochemical energy storage and conversion are getting higher and higher.For example:1.Nitrogen-doped porous organic polymers have been proven to be stored in electrochemical energy sources due to their high specific surface area and abundant active sites.2.New energy storage devices are increasingly oriented toward micron or nanoscale.Scale development,planar micro-supercapacitors have been extensively studied for their short electron transport.Two-dimensional polymer of graphene is usually complicated to prepare and the cost is high,so the new two-dimensional organic porous polymer needs to be developed,this subject synthesizes a new two-dimensional organic polymer by simple C-C coupling and photocrosslinking polymerization by new triple symmetric organic conjugated molecules,which has good applications in Oxygen reduction and micro-supercapacitor.?1?Firstly,we synthesized a novel triple symmetric organic conjugated molecule 3?NCl?,and then a novel two-dimensional organic porous polymer with a clear structural unit was synthesized by C-C coupling reaction at 400°C.Furthermore,an N-doped porous carbon material was obtained by high-temperature calcination of the polymer and activation of ammonia,the porous polymer has a high specific surface area and rich active site which exhibits to good performance in an oxygen reduction reaction and excellent stability.?2?Using the 3?NCl?obtained in the previous chapter,the new discotic molecule 3B?NF?₂was synthesized.Using simple UV lamp illumination,we obtained a new two-dimensional organic polymer film?2D-3BN?based on 3B?NF?₂ as monomer,and through simple assembly,new micro-supercapacitor 2D-3BN@MSCs was obtained.Due to the unique photoelectric properties and abundant heteroatoms of 3B?NF?2,2D-3BN@MSCs exhibited good electrochemical performance:the prepared micro-supercapacitors had an area capacitance of94.161?Fcm^-2 and a volumetric capacitance of 20.925 Fcm^-3,and exhibited an amazing1461.378Wcm^-3 volumetric power density at an ultra-high sweep speed of 1000 Vs^-1.