- Title
- One-step process to form a nickel-based/carbon nanofoam composite supercapacitor electrode using Na₂SO₄ as an eco-friendly electrolyte
- Creator
- Della Noce, R.; Eugénio, S.; Boudard, M.; Rapenne, L.; Silva, T. M.; Carmezim, M. J.; Donne, S. W.; Montemor, M. F.
- Relation
- RSC Advances Vol. 6, Issue 19, p. 15920-15928
- Publisher Link
- http://dx.doi.org/10.1039/c5ra22046g
- Publisher
- Royal Society of Chemistry
- Resource Type
- journal article
- Date
- 2016
- Description
- In this work, NiOₓ is anodically electrodeposited onto carbon nanofoam (CNF) to form a composite electrode devoted to supercapacitor applications. The use of NiSO₄ as precursor in electrodeposition results in the formation of NiO and NiOOH species, as confirmed by XPS analysis, by means of a one-step anodic process. The presence of both NiO and NiOOH suggests the existence of pseudocapacitance, as observed in MnO₂ and RuO₂ materials. By employing Na₂SO₄, an eco-friendly electrolyte, the resulting composite delivers a specific capacitance of 150 F g−1 at 1 A g−1 considering the total mass of the electrode (deposit plus substrate). In addition, this composite electrode can operate in a very broad potential window, as high as 2.2 V, suggesting its application in high energy density electrochemical supercapacitors.
- Subject
- nickel-based/carbon nanofoam; Na₂SO₄; eco-friendly; electrolytes; composite electrode
- Identifier
- http://hdl.handle.net/1959.13/1322910
- Identifier
- uon:24688
- Identifier
- ISSN:2046-2069
- Language
- eng
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