 NixCo1-x(OH)2 nanosheets on carbon nanofoam paper as high areal capacity electrodes for hybrid supercapacitorsTuyen Nguyen, Michel Boudard, M. João Carmezim and M. Fátima Montemor Energy, 2017, vol. 126, issue C, 208-216 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 1.52 C cm−2/2.03 F cm−2 at 2.1 mA cm−2, 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 0.73 C cm−2 at 7.2 mA cm−2. Keywords: Supercapacitors; NixCo1-x(OH)2; Hydroxides; Nanosheets; Carbon nanofoams; Energy storage (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:126:y:2017:i:c:p:208-216 DOI: 10.1016/j.energy.2017.03.024 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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