One-step preparation of binder-free carbon composite film as an electrode material for pseusocapacitors
Volume Title: 1
Authors
12Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
2Department of chemical engineering, Amirkabir university of technology, Tehran, Iran
3Department of Chemical Engineering, Amirkabir University of Technology(Tehran Polytechnic), Tehran, Iran
Abstract
A simple, one-step, scalable, and environmentally friendly electrophoretic deposition (EPD) approach has been successfully developed based on EPD of activated carbon (AC) and Ni(NO3)2 colloidal suspension for the fabrication of binder-free AC (AC/ Ni(OH)2) electrode. Stainless steel is used as both working (cathode) and counter (anode) electrodes and the EPD process is carried out at an applied voltage of 60V. The results of this binder-free electrode is compared with AC+PVDF electrode. Contact angle tests shows that the binder-free AC (AC/ Ni(OH)2) electrode has a super-hydrophilic surface. Moreover, results of cyclic voltammetry (CV) illustrates that the binder-free AC (AC/ Ni(OH)2) electrode has a high specific capacitance of 137.4 F.g-1 which is four times larger than AC+PVDF electrode. Therefore, the binder-free AC (AC/ Ni(OH)2) film exhibits an brilliant capacitive behavior compared with the AC+PVDF film.
Keywords
Subjects