Mesostructural Networks Of Conducting Polymers:Oxidant-Templating Preparation And Supercapacitor Applications

Conducting polymers(CPs),have attracted considerable attention because of their highly-tunable electronic properties and unique electrochemical properties,particularly those in the form of thin films and hydrogels,are becoming an increasingly important functional materials in emerging industrial applications.Poor processing techniques and preparation methods of conducting polymers impedes its widespread applications,bringing in more challenges in CP synthesis.A general method to maintain 2D CP thin films and 3D porous CP frameworks,which is prerequisite for various applications.Although challenging,processing of conducting polymer films and fabrication of porous conducting polymer with excellent electronic properties is crucial for many applications.Here,we develop a template-guide chemical method to in-situ synthesize CP films of nanofibers on various substrates under ambient conditions regarding V2O5·nH2O as a chemical oxidant to synthesis 2D CPs films and pattern with nanoscale morphology on diverse substrates,no matter planar or curved,hydrophilic of hydrophobic,flexible or stiff.Also,it can be used to fabricate 3D structure conducting polymers having bulk nanoscale morphology.Interestingly,we prepare pure polyanilline(PANI)hydrogels with the electrical conductivity of 0.12 S cm-1 in ambient conditions and.PANI networks comprised of nanofibrillar structural subunits with extreme aspect ratios explain the formation of PANI hydrogels with a low solid content of 1.03 wt%.PANI hydrogels functioning as a supercapacitor electrode display a high specific capacitance of 636 F g-1,the unprecedented rate capability,and cycling stability(-83%capacitance retention after 10,000 cycles).This method can be readily extended to polypyrrole and poly(3,4-ethylene-dioxythio-phene).