Preparation of cyclodextrin polymer-functionalized polyaniline/porous carbon composites for use in high-performance supercapacitors

Ordered polymerization of polyaniline (PANI) on porous carbon (PC) was achieved using cyclodextrin polymer (CDP)-functionalization (CDP/PC) on PC. PANI can be polymerized on PC surface through host-guest interactions between aniline monomers and the CDP to form the CDP-PANI/PC composite. CD modification induced the ordered polymerization of aniline monomers. So CDP-PANI/PC exhibited remarkable specific capacitance (739.2 F.g(-1) at 1 A.g(-1)) and high rate capability (516 F.g(-1) at 10 16g(-1), retaining 69.8% of its original capacitance) in a three-electrode system. A symmetrical supercapacitor device assembled from CDP-PANI/PC electrodes retained over 81 % of its initial capacitance after 5000 cycles at 5 A.g(-)(1).

Automated summary

Ordered polymerization of polyaniline on porous carbon was achieved through cyclodextrin polymer functionalization. This functionalized material exhibited remarkable specific capacitance and high rate capability in a supercapacitor device, while maintaining good stability during cycling.