Corona-Guinto J.L.,ESIME IPN UA |
Cardeno-Garcia L.,Laboratorio Of Electrocatalisis |
Martinez-Casillas D.C.,CINVESTAV |
Sandoval-Pineda J.M.,ESIME IPN UA |
And 3 more authors.
International Journal of Hydrogen Energy | Year: 2013
The Proton Exchange Membrane Water Electrolyzer (PEMWE) can be coupled to renewable energy sources (solar radiation and wave energy), which produce the necessary electricity for splitting the water. In this work the performance of a PEMWE using RuIrCoOx as anodic electrocatalyst had been examined. The oxide powder was synthesized using a chemical reduction method, followed by thermal oxidation. The electrochemical properties of the electrocatalysts were examined by cyclical and lineal voltammetry in 0.5 M H2SO 4. It was found that RuIrCoOx oxide electrodes present a stable performance for OER. The PEMWE was designed and in-home built. Chrono-potentiometric experiments were recorded in the current range of 0.25 mA cm-2 to 75 mA cm-2 at 300 s. The current pulses length is chosen to be sufficiently long so that the voltage remains constant. Their intrinsic electrocatalytic activity in combination with their large surface area and stability are quite promising for the development of economically feasible electrocatalysts for (PEMWE). Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Sanchez-Dirzo R.,National Autonomous University of Mexico |
Gonzalez-Huerta R.G.,Laboratorio Of Foto Electrocatalisis |
Mendoza E.,National Autonomous University of Mexico |
Silva R.,National Autonomous University of Mexico |
Sandoval Pineda J.M.,ESIME IPN UA
International Journal of Hydrogen Energy | Year: 2014
One of the main challenges that our society must overcome in this century is that of finding alternative energy sources to fossil fuels. These, ideally, must be inexpensive, less polluting than current fuels and available for a substantial time. One promising alternative is hydrogen, which has the great advantage that it can be produced by coupling renewable energy devices with water electrolysis. Several projects devoted to connecting photovoltaic and wind systems with electrolysis devices have been successful; however, little research has been done into the coupling of ocean wave energy converters with water electrolysis. The work here proposes a basic system that stores the energy from waves in the form of hydrogen. The WEC considered is a novel design known as a Blow-Jet, which captures waves and converts them into a water jet. The performance of the Blow-Jet is found to depend more on wavelength than on wave height. The electrolyser results show, at 0.200 A and 1.88 V, that the electrolysis of water produces 0.082 Nl h-1 of hydrogen and a current efficiency (ηI) of 90.58%. © 2014 Hydrogen Energy Publications, LLC.