Ultra-high specific capacitance of β-Ni(OH)monolayer nanosheets synthesized by an exfoliation-free sol-gel route
Journal of Nanoparticle Research, ISSN: 1572-896X, Vol: 16, Issue: 9
2014
- 30Citations
- 28Captures
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Article Description
In this work, β-Ni(OH)monolayer nanosheets were prepared in benzyl alcohol by a facile exfoliation-free sol-gel route. The hydrolysis reaction of metal ions was started with the ring-opening reaction of epoxide. The in situ modification of benzyl alcohol molecules on the surface of secondary growth unit of hydroxide allowed the formation of β-Ni(OH)monolayer nanosheets and 100 % monolayer state of β-Ni(OH)in the resultant suspension. As proven in the electrochemical measurement, the maximum specific capacitance of 1735 F gwas obtained at scan rate of 5 mV swithin potential window of 0.6 V in 6 mol lKOH aqueous solution, which is equal to the theoretical value of β-Ni(OH). This high electrochemical performance is attributed to the complete exposure of every structure unit of β-Ni(OH)to electrolyte. This work demonstrates that monolayer nanosheets can generate from the brucite-type nickel hydroxide through this bottom-up strategy although it had been theoretically considered to be impossible.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84906007611&origin=inward; http://dx.doi.org/10.1007/s11051-014-2601-1; http://link.springer.com/10.1007/s11051-014-2601-1; http://link.springer.com/content/pdf/10.1007/s11051-014-2601-1; http://link.springer.com/content/pdf/10.1007/s11051-014-2601-1.pdf; http://link.springer.com/article/10.1007/s11051-014-2601-1/fulltext.html; https://dx.doi.org/10.1007/s11051-014-2601-1; https://link.springer.com/article/10.1007/s11051-014-2601-1
Springer Science and Business Media LLC
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