Study on solid electrolyte catalyst poisoning in solid acid fuel cells

2021 ◽  
Author(s):  
Maximilian Wagner ◽  
Oliver Lorenz ◽  
Felix Paul Lohmann-Richters ◽  
Áron Varga ◽  
Bernd Abel
Keyword(s):  
Fuel Cells ◽  
Solid Electrolyte ◽  
Solid Acid ◽  
Degradation Mechanism ◽  
Catalyst Poisoning

Solid acid fuel cells operate at intermediate temperatures utilizing a solid electrolyte (CsH2PO4, CDP). However, relatively little is known about the degradation mechanism and the topic is rarely addressed. Phosphate...

In situ determination of the electrochemically active platinum surface area: key to improvement of solid acid fuel cells

2018 ◽  
Vol 6 (6) ◽  
pp. 2700-2707 ◽  
Author(s):  
Felix P. Lohmann-Richters ◽  
Bernd Abel ◽  
Áron Varga
Keyword(s):  
Fuel Cells ◽  
Solid Electrolyte ◽  
Surface Area ◽  
Solid Acid ◽  
Oxide Reduction ◽  
Electrolyte System ◽  
Platinum Surface ◽  
Electrochemically Active

Surface oxide reduction is demonstrated for measuring the active Pt surface area in a solid electrolyte system at 240 °C.

scholarly journals Fluorite-Type Solid Solutions in the System Y-Ta-O-N: A Nitrogen-Rich Analogue to Yttria-Stabilized Zirconia (YSZ)

2006 ◽  
Vol 61 (6) ◽  
pp. 660-664 ◽  
Author(s):  
H. Schilling ◽  
H. Wolff ◽  
R. Dronskowski ◽  
M. Lerch
Keyword(s):  
Fuel Cells ◽  
Solid Electrolyte ◽  
Solid Solutions ◽  
Vacancy Concentration ◽  
Anion Vacancy ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
X Ray ◽  
Fluorite Type

Fluorite-type phases in the system Y-Ta-O-N have been prepared by ammonolysis of Y-Ta-O precursors. X-ray powder patterns show unusual asymmetrical reflection profiles explained by DFT and MD methods. The anion vacancy concentration of some of these oxynitrides is similar to that of yttria-doped zirconia, commercially used as solid electrolyte in fuel cells. Hence, these compounds are interesting candidates for mixed oxygen-nitrogen superion conductors

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