Self-templated flower-like NiCoZn-carbonate hydroxide hollow nanospheres for asymmetric supercapacitors with high performance

Abstract

Flower-like NiCoZn-carbonate hydroxide hollow nanospheres were prepared and used as the positive electrode in a supercapacitor having superior cycling stability of 99.9% after 15 000 cycles at 10 A g−l.

Morphology-controlled synthesis of a NiCo-carbonate layered double hydroxide as an electrode material for solid-state asymmetric supercapacitors

“…36 Recently, modifications on NiCo-and other LDHs have been performed to further enhance the supercapacitor performance. [39][40][41] It is revealed that the best supercapacitor performance in NiCo-CH is primarily due to the optimized morphology and Ni : Co ratio. 42 Recently, Bhatt et al reported that the Ni : Co ratio leads to a change in the electronic properties of the material and thus the electrochemical performance.…”