Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5476979 | Energy | 2017 | 9 Pages |
Abstract
This work reports the charge storage ability of NixCo1-x(OH)2 nanosheet-carbon nanofoam paper (CNFP) composites prepared by electrodeposition for high areal capacity supercapacitor electrodes. The NixCo1-x(OH)2 film grew through instantaneous nucleation, uniformly covered CNFP, and displayed a porous morphology composed of a nanosheet percolation network. The electrochemical response of the NixCo1-x(OH)2 films was tuned by varying the Co to Ni ratios. The optimized NixCo1-x(OH)2 stoichiometry resulted in Ni0.33Co0.67(OH)2-CNFP electrodes displaying areal capacity/capacitance values of 1.52Â CÂ cmâ2/2.03Â FÂ cmâ2 at 2.1Â mAÂ cmâ2, resulting from the contribution of the double layer capacity of CNFP with the redox capacity of NixCo1-x(OH)2. A two electrode cell composed of CNFP as negative electrode and NixCo1-x(OH)2-CNFP as positive electrode presented a high areal capacity value of 0.73Â CÂ cmâ2 at 7.2Â mAÂ cmâ2.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Tuyen Nguyen, Michel Boudard, M. João Carmezim, M. Fátima Montemor,