Editorial

摘要

The International Workshop on Hydrogen has become now a tradition. Indeed following the success of the previous editions of the International Workshop on Hydrogen 1-3 (held in Algiers, Algeria back in 2005, in Ghardaia, Algeria in 2007 and in 2009 in Rabat, Morocco) the Micro Electro Thermal Systems (METS) Research Unit in the National Engineering School of Sfax (University of Sfax) hosted in Tunisia the Fourth International Workshop on Hydrogen (IWH-2012). This edition was held in Sousse, Tunisia, from 21st to 23rd of March 2012. Researchers coming from different countries brought and presented their contributions during the conference covering most of the topics related to hydrogen energy.