Correlation between the mesoporous carbon sphere with Ni(OH)2 nanoparticle contents for high-performance supercapacitor electrode

摘要: Ni(OH)2 nanoparticles were decorated on mesoporous carbon spheres (MPCS) using a simple hard template method. The MPCS derived from sodium carboxymethyl cellulose. As-prepared MPCS/Ni(OH)2 nanocomposites used as electrode materials for supercapacitors. These composites exhibited better electrochemical properties than pristine sphere owing to the synergistic effect. However, increase in is not proportional performance improvement. addition of an optimal amount Ni(OH)2, typically 1:20 by weight (MPCS:NiCl2·6H2O), showed excellent specific capacitance 1338.296 F g−1 at scan rate 5 mV s−1. encouraging results indicate potential development highly capacitive energy storage devices practical applications.