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Formation of Micro and Nanostructured Nickel/Silica and Nickel/Metal Composites by Electrodeposition of Mesoporous Silica onto Nickel Foam

Published online by Cambridge University Press:  21 March 2011

Nikolaus L. Cordes
Affiliation:
Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487-0336, U.S.A.
Martin G. Bakker
Affiliation:
Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487-0336, U.S.A. Center for Materials for Information Technology, The University of Alabama Tuscaloosa, AL 35487-0209, U.S.A.
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Abstract

Extremely high surface area porous electrodes are of interest as current collectors for advanced batteries and as the basis for supercapacitors. For moderate to large scale storage applications a three-dimensional material is needed with porosity at multiple length scales. We are developing a combined bottom up/top down approach to creating such materials by using electrodeposition of mesoporous silica on nickel foam, a commercially available porous conductor widely used as the current collector in various batteries. Electrodeposition produces a conformal coating on the nickel foam. By controlling the electrodeposition time the morphology of the mesoporous silica can be varied from a thin film up to 500 nm thick to a loosely bound agglomeration of mesoporous silica particles capable of completely filling the 0.3-0.5 mm voids of the nickel foam. The internal diameter of the mesopores in the silica can be controlled in the range 2.5-4.8 nm by changing the chain length of the templating surfactant used. Gas adsorption shows surface areas of 400-1600 m2/g of silica deposited, consistent with the assumed structure of the material.

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Articles
Copyright
Copyright © Materials Research Society 2011

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References

(1)Paserin, V., Marcuson, S., Shu, J., and Wilkinson, D. S., Adv. Eng. Mat. 6, 454458 (2004).CrossRefGoogle Scholar
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(5)Cordes, N. and Bakker, M. G. In Materials Challenges F acing Electrical Energy Storage, edited by Rao, G., (Mater. Res. Soc. Proc. 1214E, Boston, MA, 2009), pp. U04-09/1-6.Google Scholar

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Formation of Micro and Nanostructured Nickel/Silica and Nickel/Metal Composites by Electrodeposition of Mesoporous Silica onto Nickel Foam
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Formation of Micro and Nanostructured Nickel/Silica and Nickel/Metal Composites by Electrodeposition of Mesoporous Silica onto Nickel Foam
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Formation of Micro and Nanostructured Nickel/Silica and Nickel/Metal Composites by Electrodeposition of Mesoporous Silica onto Nickel Foam
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