Preparation and application of poly(arylamine ketone) materials for electrochromism and lithium-ion batteries

Abstract

The investigation of electrochemical materials with multiple functions is steadily growing. By joining ketone groups to triphenylamine structures via a two-step C–N coupling procedure, PAEK-CzTPAs multiple function copolymers were prepared and used in the electrochromic and battery fields. When the PAK-CzTPA polymer is applied to the electrochromic field, the transmission change has a small attenuation even after 600 s. PAK-CzTPA polymer as cathode active material with a theoretical specific capacity of 122.9 mAh/g, PAK-CzTPA cathode capacity is about 90.0 mAh/g after 50 cycles with 87.9 % capacity retention at 0.2 C current density. 6F-PAEK-CzTPA20 cathode reaches 164.0 mAh/g at 0.1 C current density after 50 cycles with 85.0 % coulombic efficiency, which itself as binder is applied to ternary (NCM811) electrode. Materials with the ability to store energy, exhibit electrochromic characteristics and perform other physical tasks of materials with a wide range of potential uses that could increase energy efficiency, save an important quantity of resources and make the system more sustainable overall.