Investigation of the Partial Oxidation of Methane at the Interface Metal (Pt, Au)|YSZ
Source abstract
Abstract
The reactions occurring at the electrodes of Pt|YSZ|Au cell fed with a mixture of CH4+air were investigated at 600–850∘C. The electrodes of this cell were made from Pt and Au wires, providing a small contact area between metal and YSZ (quasi-point electrodes). The dependences of the cell voltage on the composition of gas mixture and time were studied. A sequence of chemical and electrochemical reactions was proposed to explain the observed abrupt variation of the cell voltage from positive to negative values. Also the impedances of the Pt and Au electrodes were measured and analysed in order to justify the proposed mechanism of reactions.
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Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Electrochemical Analysis and Applications · Electrocatalysts for Energy Conversion
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