Author:Modibedi, Remegia M; Mathe, Mahlanyane K; Ozoemena, KIDate:Sep 2011Ethanol powered direct alcohol fuel cells (DAFCs) have attracted enormous attention as potential power sources for portable electronic devices and transportation due to the much higher energy density than gaseous fuels such as hydrogen and ...Read more
Author:Ejikeme, PM; Makgopa, K; Ozoemena, KIDate:Jul 2016The operating life of a fuel cell is expected to be thousands of hours. One of the critical components of the fuel cell that will allow for such long-life cycle is the catalyst-support material. The support material is expected, amongst others, ...Read more
Author:Modibedi, Remegia M; Mathe, Mahlanyane K; Motsoeneng, RG; Khotseng, LE; Ozoemena, KIDate:May 2014Direct alcohol fuel cells (DAFCs) continue to extensive attention as potential power sources for portable and stationary applications. The oxygen reduction reaction (ORR) involving the four electron transfer remains a challenge for DAFCs due ...Read more
Author:Rohwer, Mark B; Ozoemena, K; Modibedi, Remegia MDate:Nov 2012Fuel cells provide a means for the direct conversion of fuels to electricity. Direct alcohol fuel cells (DAFCs) are particularly attractive because liquid fuels such as methanol or ethanol have a relatively low cost, a high volumetric energy ...Read more