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Proceedings Paper

Hydrogen generation using ruthenium nano-rod array electrodes
Author(s): Seongyul Kim; Tansel Karabacak; Toh-Ming Lu; Nikhil Koratkar
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Paper Abstract

Hydrogen production and delivery is critical to successful fuel cell operation. One of the most common methods to produce hydrogen is via electrolysis of water. However over-potential losses at the electrodes results in poor efficiency and an increase in power consumption. In this study we carried out experiments of water electrolysis with novel single crystal Ruthenium nano-rod arrays as the device cathode. We show that the increased active area of the nanostructured electrode serves to reduce the operating current density of the electrolyzer causing the over-potential to show a corresponding decrease. In addition to the decreased over-potential, the power needed to produce one mole of hydrogen was also reduced for the nanostructured electrolyzer compared to an electrolyzer with planar electrodes.

Paper Details

Date Published: 31 March 2006
PDF: 9 pages
Proc. SPIE 6172, Smart Structures and Materials 2006: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, 61720B (31 March 2006); doi: 10.1117/12.658786
Show Author Affiliations
Seongyul Kim, Rensselaer Polytechnic Institute (United States)
Tansel Karabacak, Rensselaer Polytechnic Institute (United States)
Toh-Ming Lu, Rensselaer Polytechnic Institute (United States)
Nikhil Koratkar, Rensselaer Polytechnic Institute (United States)


Published in SPIE Proceedings Vol. 6172:
Smart Structures and Materials 2006: Smart Electronics, MEMS, BioMEMS, and Nanotechnology
Vijay K. Varadan, Editor(s)

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