Functionalised porous nanocomposites: A multidisciplinary approach to investigate designed structures for supercapacitor applications

Pinkert K, Giebeler L, Herklotz M, Oswald S, Thomas J, Meier A, Borchardt L, Kaskel S, Ehrenberg H, Eckert J (2013)

Publication Type: Journal article

Publication year: 2013

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 1

Pages Range: 4904-4910

Journal Issue: 15

DOI: 10.1039/c3ta00118k

Abstract

The rational design of nanocomposite structures with specific functions in energy storage applications is a key requisite to increase energy and power density in electrical storage systems. Nanoscale characterisation tools are essential to achieve controlled syntheses of such well-defined interface structures in order to reveal structure-property relationships in functional nanocomposites. In the following, we report on the synthesis of iron (hydr)oxide nanoparticles homogeneously embedded into the walls of the three dimensional carbon network of mesoporous carbon CMK-3 via a mild one-step redox functionalisation. Depth profile Auger electron spectroscopy (DP-AES) and energy filtered transmission electron microscopy (EF-TEM) are applied to analyse elemental distribution profiles and location of the active components. The combination of the two analytical techniques provides a highly resolved spatial distribution of transition metal (hydr)oxide nanoparticles inside the carbon network. Functionalised porous carbon nanocomposites were tested for supercapacitor applications and the highest energy density of an iron oxide carbon composite is demonstrated. The iron (hydr)oxide contributes with a pseudocapacitance of 357 F g-1 to the porous nanocomposite in a 6 M KOH electrolyte. An overall doubling of the specific capacitance of the active electrode material compared to the pristine CMK-3 is achieved. © The Royal Society of Chemistry 2013.

Involved external institutions

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Technische Universität Dresden DE Germany (DE) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Pinkert, K., Giebeler, L., Herklotz, M., Oswald, S., Thomas, J., Meier, A.,... Eckert, J. (2013). Functionalised porous nanocomposites: A multidisciplinary approach to investigate designed structures for supercapacitor applications. Journal of Materials Chemistry A, 1(15), 4904-4910. https://doi.org/10.1039/c3ta00118k

MLA:

Pinkert, Katja, et al. "Functionalised porous nanocomposites: A multidisciplinary approach to investigate designed structures for supercapacitor applications." Journal of Materials Chemistry A 1.15 (2013): 4904-4910.

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