Temperature dependence of the electro-oxidation of D-glucose and D-sorbitol in a PEMFC
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Temperaturberoendet för elektrooxidationen av D-glukos och D-sorbitol i en PEMFC (Swedish)
The influence of temperature on the electro-oxidation of glucose and sorbitol has been studied in this work. The oxidation reaction was carried out on the anode of a direct sugar fuel cell with the help of a porous carbon supported Pt-RuO2 electrode. Temperature showed to increase cathodic current densities in the measurements of cyclic voltammetry. The direct glucose fuel cell constructed in the laboratory with Pt on carbon as cathode and PtRu/C as anode gave 8.6 mW/cm2 peak power density in 1M glucose at 800 C. In the case of sorbitol; 5.8 mW/cm2 were obtained. When compared with measurements in the literature, the results obtained in this study were ten times better, when normalized to the amount of Pt in the electrodes. Deactivation of catalyst was observed when using glucose and sorbitol. Activation procedures were tested on the membrane-electrode assembly to reverse catalyst poisoning.
Place, publisher, year, edition, pages
2011. , 38 p.
Direct-PEMFC, Electro-oxidation, D-Glucose, D-Sorbitol, Temperature dependency.
Chemical Process Engineering
IdentifiersURN: urn:nbn:se:kth:diva-90706OAI: oai:DiVA.org:kth-90706DiVA: diva2:506116
Subject / course
Degree of Master - Materials and Sensors System for Environmental Technologies
UppsokPhysics, Chemistry, Mathematics
Oyarce Barnett, Alejandro, Doktorand
Lagergren, Carina, Universitetslektor