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Electrode R&D, stack design and performance of biomass-based alkaline fuel cell module
KTH, School of Chemical Science and Engineering (CHE).
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1999 (English)In: International Journal of Hydrogen Energy, ISSN 03603199 (ISSN), Vol. 24, no 6, 549-564 p.Article in journal (Refereed) Published
Abstract [en]

Electrode formulations with different materials and manufacturing techniques were tested electrochemically in order to assess their stability and activity in long-term operations. Cathode electrocatalysts, such as CoTPP, Ca0.9La0.1MnO3 and Pt-Co alloys were incorporated in high surface area carbons and operated at a constant load of 100 mA cm2, 80 °C and an electrolyte concentration of 6 M KOH. Similarly, anode catalysts with Pt-Pd bimetallic combinations were also tested and ascertained in half-cell measurements. Surface area measurements and Transmission Electron Microscopy (TEM) analyses were carried out both before and after the electrochemical test procedures. The electrodes were incorporated into a seven and two cell module design of the external and internal manifolding types and the experiences gained from these design principles are described, respectively. Furthermore, a biomass fed AFC module with all the system descriptions, steps, and a demonstration layout of producer gas to alkaline fuel cell are examined and discussed. Wood charcoal and agro-residues were used as feedstock and as a primary fuel. Power output of the different feedstock in a producer gas fed alkaline fuel cell has the shown potentiality and efficiency to be applied as a stand alone power generator.

Place, publisher, year, edition, pages
1999. Vol. 24, no 6, 549-564 p.
Keyword [en]
Agricultural wastes, Biomass, Calcium compounds, Catalysts, Charcoal, Cobalt compounds, Electric generators, Electrochemical electrodes, Electrolytes, Feedstocks, Platinum alloys, Potassium compounds, Potassium hydroxide, Fuel cells
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-62359DOI: 10.1016/S0360-3199(98)00104-9OAI: diva2:480215
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