Hydrogen production from glycerine in Ni-Zn electrodes
DOI:
https://doi.org/10.4013/ete.2014.102.04Abstract
The interest associated with the use of hydrogen is not only related to the fact that it is an alternative fuel and renewable, depending on the process, but it is also related to the use of it as an important raw material in industrial processes, for example refining oil and ammonia production. The water electrolysis presents itself as an excellent alternative for hydrogen production, because it is a technically tested method of easy technological transfer and good efficiency. This paper proposes the development of Ni-Zn leached electrodes efficient, stable and cheap for hydrogen production from electrolysis process in aqueous medium, providing system development for the use of waste from the production of biodiesel (glycerol) process. We evaluated the chemical composition, morphology and the electrochemical behavior of the electrodes. The results showed that the developed electrodes showed a more efficient behavior for HER in comparison to the Ni electrode. The high electrocatalytic activity was mainly attributed to the high surface area of the electrodes that increased the number of active sites for Hads.
Keywords: glycerol, hydrogen electrodes, Ni-Zn.
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