Pseudocapacitive and hierarchically ordered porous electrode materials supercapacitors

B. Saruhan; Y. Gönüllü; B. Arndt

doi:10.1117/12.2015275

28 May 2013 Pseudocapacitive and hierarchically ordered porous electrode materials supercapacitors

B. Saruhan, Y. Gönüllü, B. Arndt

Proceedings Volume 8728, Energy Harvesting and Storage: Materials, Devices, and Applications IV; 872810 (2013) https://doi.org/10.1117/12.2015275
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Commercially available double layer capacitors store energy in an electrostatic field. This forms in the form of a double layer by charged particles arranged on two electrodes consisting mostly of active carbon. Such double layer capacitors exhibit a low energy density, so that components with large capacity according to large electrode areas are required. Our research focuses on the development of new electrode materials to realize the production of electrical energy storage systems with high energy density and high power density. Metal oxide based electrodes increase the energy density and the capacitance by addition of pseudo capacitance to the static capacitance present by the double layer super-capacitor electrodes. The so-called hybrid asymmetric cell capacitors combine both types of energy storage in a single component. In this work, the production routes followed in our laboratories for synthesis of nano-porous and aligned metal oxide electrodes using the electrochemical and sputter deposition as well as anodization methods will be described. Our characterisation studies concentrate on electrodes having redox metal-oxides (e.g. MnO_x and WO_x) and hierarchically aligned nano-porous Li-doped TiO₂-NTs. The material specific and electrochemical properties achieved with these electrodes will be presented.

Citation Download Citation

B. Saruhan, Y. Gönüllü, and B. Arndt "Pseudocapacitive and hierarchically ordered porous electrode materials supercapacitors", Proc. SPIE 8728, Energy Harvesting and Storage: Materials, Devices, and Applications IV, 872810 (28 May 2013); https://doi.org/10.1117/12.2015275

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