Ultrathin nanosheets of cobalt-nickel hydroxides hetero-structure via electrodeposition and precursor adjustment with excellent performance for supercapacitor

Homogeneous better-dispersed structure composed of ultrathin cobalt-nickel double layered hydroxides nanosheets (∼5 nm) has been synthesized via electrodeposition technique. An asymmetric supercapacitor with high energy density and excellent long cycling stability was fabricated.188