Hydrogen generation using ruthenium nano-rod array electrodes

Seongyul Kim; Tansel Karabacak; Toh-Ming Lu; Nikhil Koratkar

doi:10.1117/12.658786

31 March 2006 Hydrogen generation using ruthenium nano-rod array electrodes

Seongyul Kim, Tansel Karabacak, Toh-Ming Lu, Nikhil Koratkar

Proceedings Volume 6172, Smart Structures and Materials 2006: Smart Electronics, MEMS, BioMEMS, and Nanotechnology; 61720B (2006) https://doi.org/10.1117/12.658786
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

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.

Citation Download Citation

Seongyul Kim, Tansel Karabacak, Toh-Ming Lu, and Nikhil Koratkar "Hydrogen generation using ruthenium nano-rod array electrodes", Proc. SPIE 6172, Smart Structures and Materials 2006: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, 61720B (31 March 2006); https://doi.org/10.1117/12.658786

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