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#MinCup25 has started and this year I am prepared to show to all my chemist colleagues, how cool minerals are 💪.
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How can we measure that? The answer is: with an adapted Hebb-Wagner-type measurement device. This means, we use ion blocking, but electron conducting contacts (Pt). On the backside, there is a large Pt sheet contact and on top is a small Pt micro contact (contact size reduces the polarization time).The micro contact is surrounded by dielectric paste, which shields the contact from inserting new ox
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🔥 Top post: #MinCup25 has started and this year I am prepared to show to all · 22 likes + reposts
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#MinCup25 has started and this year I am prepared to show to all my chemist colleagues, how cool minerals are 💪.
How can we measure that? The answer is: with an adapted Hebb-Wagner-type measurement device. This means, we use ion blocking, but electron conducting contacts (Pt). On the backside, there is a large Pt sheet contact and on top is a small P…
we can get already get a lot of information about the pathways of the ions through the grains and about the degree of blocking of the charge transport by the grain boundaries.Ionic conductivity should remain unchanged over a large O2/H2O p…
For ion conductivity, this can be done by impedance spectroscopy. This is a method which measures the AC current resistance of a material. As electrons and capacitive effects at interfaces are relatively fast, they occur in another frequen…
Typical solid electrolytes show a good ionic and a low electronic conductivity. In O2- and H+ conductors, charge transport depends on the O2 and H2 (H2O) partial pressure. So how do we determine O2-, H+, and electronic partial conductivit…
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