High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon.

ABSTRACT: A novel Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres (CoNiFe-LDH/CNFs-0.5) composite was successfully fabricated through an easy in situ growth approach. The morphology and composition of the obtained materials were systematically investigated. When the two derived materials were used for supercapacitor electrodes, the CoNiFe-LDH/CNFs-0.5 composite displayed high specific surface area (114.2 m² g^-1), specific capacitance (1203 F g^-1 at 1 A g^-1) and rate capability (77.1% from 1 A g^-1 to 10 A g^-1), which were considerably higher than those of pure CoNiFe-LDH. Moreover, the specific capacitance of CoNiFe-LDH/CNFs-0.5 composite remained at 94.4% after 1000 cycles at 20 A g^-1, suggesting excellent lon

SUBMITTER: Wang F 

PROVIDER: S-EPMC5498571 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature