Development of high-utilization honeycomb-like α-Ni(OH)₂ for asymmetric supercapacitors with excellent capacitance.

ABSTRACT: The low utilization rate of active materials has been a critical obstacle for the industrialization of ultracapacitors. In this study, a thin layer of cross-structured ultrathin α-Ni(OH)₂ nanosheets was successfully grown in situ on the surface of a nickel foam as a high-conductivity framework by a vibratory water bath route under a low temperature (80 °C) and mild conditions. Combining the ultrathin α-Ni(OH)₂ nanosheets and ultrashort electron transport, the strategy of a perfect intercalation structure of α-Ni(OH)₂ and a thin layer of active material on a continuous conductive framework resulted in a high utilization rate of active material, which further achieved high specific capacitance of 213.55 F g^-1 at 1 A g^-1 in a two-e

SUBMITTER: Zhou S 

PROVIDER: S-EPMC9089160 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature