Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11019984 | Journal of Alloys and Compounds | 2019 | 29 Pages |
Abstract
Porous network ZnCo2O4 nanosheets are successfully achieved by a simple hydrothermal process and adjusting the annealing temperature. The electrochemical performance of ZnCo2O4 nanosheets is significantly influenced by different annealing temperatures. It has been discovered that electrode of ZnCo2O4 that has be annealed at 200â¯Â°C shows an ultrahigh areal capacitance of 3.19â¯Fâ¯cmâ2 at a current density of 2â¯mAâ¯cmâ2. An asymmetric supercapacitor device was assembled by ZnCo2O4 annealed at 200â¯Â°C as positive electrode and activated carbon as negative electrode, which exhibits the energy densities of 50.7 and 37.7â¯Wh kgâ1 at power densities of 187.6 and 2950.4â¯Wâ¯kgâ1, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Xizi Li, Mingyi Zhang, Lili Wu, Qishan Fu, Hong Gao,