Polyaniline-Lignin Interpenetrating Network for Supercapacitive Energy Storage

• DOI: 10.1021/acs.nanolett.1c02843
• Publication Date: 2021-11-05T13:10:31Z
• Authors: Neda Dianat; Mohammad S. Rahma...; Abolhassan Noori; Maher F. El-Kady; Xueying Chang; Richard B. Kaner; Mir F. Mousavi
• Keywords: Polyaniline nanofibers

Because of increasing interest in environmentally benign supercapacitors, earth-abundant biopolymers have found their way into value-added applications. Herein, a promising nanocomposite based on an interpenetrating network polyaniline and sulfonated lignin (lignosulfonate, LS) is presented. On the basis appropriate regulation nucleation kinetics growth behavior via applying series rationally designed potential pulse patterns, uniform PANI-LS film achieved. fast rate H+ insertion–deinsertion kinetics, rather than slow SO42– doping–dedoping process, delivers specific capacitance 1200 F g–1 at 1 A surpassing best conducting polymer-lignin supercapacitors known. symmetric PANI-LS||PANI-LS device high energy 21.2 W h kg–1, outstanding power 26.0 kW along with superb flexibility excellent cycling stability. Thus, combining charge storage attributes lignosulfonate enables waste-to-wealth approach to improve supercapacitive performance polyaniline.