TY - GEN
T1 - Ethanol oxidation in direct ethanol fuel cells
AU - Reeb, B. B.L.
AU - Kluy, N.
AU - Schneider, O.
AU - Stimming, U.
PY - 2013
Y1 - 2013
N2 - Membrane electrode assemblies (MEAs) for an intermediate temperature fuel cell were prepared and evaluated as direct ethanol fuel cell (DEFC) and as hydrogen fuel cell. As proton conductor, a temperature stable electrolyte for intermediate temperatures with superior ionic conductivity was prepared from ammonium polyphosphate (APP) and metal oxides (e.g. SiO2, TiO 2) by a thermal solid state reaction, forming inorganic composite materials with the formula (NH4)2Si(1-x)Ti xP4O13 (ASi(1-x)TixPP). For membrane fabrication, the electrolyte was embedded in an organic polymer matrix, obtaining flexible membranes. Finally, MEAs were obtained by attaching commercial electrodes on the membrane. The thermal properties of the membranes were investigated by thermogravimetric analysis (TGA), which predicts thermal stability up to 300°C. First preliminary fuel cell results showed a maximum power density of ≈ 8 mW/cm2 with hydrogen and oxygen and ≈ 0.6 mW/cm2 with a stoichiometric mixture of ethanol/water and oxygen.
AB - Membrane electrode assemblies (MEAs) for an intermediate temperature fuel cell were prepared and evaluated as direct ethanol fuel cell (DEFC) and as hydrogen fuel cell. As proton conductor, a temperature stable electrolyte for intermediate temperatures with superior ionic conductivity was prepared from ammonium polyphosphate (APP) and metal oxides (e.g. SiO2, TiO 2) by a thermal solid state reaction, forming inorganic composite materials with the formula (NH4)2Si(1-x)Ti xP4O13 (ASi(1-x)TixPP). For membrane fabrication, the electrolyte was embedded in an organic polymer matrix, obtaining flexible membranes. Finally, MEAs were obtained by attaching commercial electrodes on the membrane. The thermal properties of the membranes were investigated by thermogravimetric analysis (TGA), which predicts thermal stability up to 300°C. First preliminary fuel cell results showed a maximum power density of ≈ 8 mW/cm2 with hydrogen and oxygen and ≈ 0.6 mW/cm2 with a stoichiometric mixture of ethanol/water and oxygen.
UR - http://www.scopus.com/inward/record.url?scp=84906837642&partnerID=8YFLogxK
U2 - 10.1149/05328.0023ecst
DO - 10.1149/05328.0023ecst
M3 - Conference contribution
AN - SCOPUS:84906837642
SN - 9781607684800
T3 - ECS Transactions
SP - 23
EP - 30
BT - Ethanol Oxidation
PB - Electrochemical Society Inc.
T2 - Symposium on Ethanol Oxidation - 223rd Meeting of the Electrochemical Society
Y2 - 12 May 2013 through 16 May 2013
ER -