Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6602919 | Electrochimica Acta | 2018 | 50 Pages |
Abstract
A novel multicomponent hybrid of copper metal-organic framework (MOF)-derived copper oxide@mesoporous carbon (CuOx@mC) embedded with polyaniline (PANI) and reduced graphene oxide (rGO) was synthesized by in-situ polymerization (denoted as CuOx@mC@PANI@rGO). After detailed characterizations of basic chemical and physical performances, the series of as-prepared CuOx@mC@PANI@rGO composites were explored as electrode materials for supercapacitors. Results demonstrated that a uniformly and highly ordered interface layer of PANI together with rGO nanosheets was formed on the surface of the CuOx@mC frameworks because of the regular octahedral structure of CuOx@mC composite. This efficient conductive network can enhance the ion-diffusion process and fast redox reaction at the electrode/electrolyte interface, leading to increased electrical conductivity and enhanced capacitive performance. By changing the pyrolysis temperature of Cu-MOF, the ternary CuOx@mC@PANI@rGO obtained at 700â¯Â°C exhibited the highest capacitance of up to 534.5â¯Fâ¯gâ1 and outstanding cycling stability. Conversely, the corresponding CuOx@mC@PANI showed only a specific capacitance of 456.0â¯Fâ¯g-1â¯at a discharge current density of 1â¯Aâ¯gâ1. These findings may broaden the applications of metal-organic framework-derived composites as high-performance supercapacitors.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Linghao He, Jiameng Liu, Longyu Yang, Yingpan Song, Minghua Wang, Donglai Peng, Zhihong Zhang, Shaoming Fang,