Home > Publications database > A New Setup for the Quantitive Analysis of Drying by the Use of Gas-phase FTIR-Spectroscopy > print

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005     20240708132930.0
024 7 _ |a 10.1063/1.5036817
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024 7 _ |a 0034-6748
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024 7 _ |a 1089-7623
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082 _ _ |a 530
100 1 _ |a Scheepers, Fabian
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245 _ _ |a A New Setup for the Quantitive Analysis of Drying by the Use of Gas-phase FTIR-Spectroscopy
260 _ _ |a [S.l.]
|c 2018
|b American Institute of Physics
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520 _ _ |a Drying rates are important for the manufacture of thin films and in specific for the production of electrodes used in electrochemical devices such as fuel cells and electrolyzers. The known procedures to investigate time-dependent sample compositions and selective evaporation rates are insufficient to obtain mean information about the full area instead of a single point analysis. Therefore, a new setup is presented using gas-phase Fourier-transform infrared spectroscopy. This method analyzes the gas-phase composition to recalculate the layer composition in electrode fabrication at any time during drying. According to the golden rule of measurement technology, manufacturer specifications are often overestimated. Therefore, our alternative procedures were used to evaluate the precision of devices used. The calculated measurement precision is confirmed by validation. The expected deviation is quantified to be less than 2% for the common application. Further on, the relative test-retest standard deviation is determined to be 0.3%–0.4%. As a result of the error propagation, the measurement precision is limited by the background gas flow rate precision for common application. At low volume fractions, the influence of the substance flow rate deviations becomes significant. However, further studies will focus on increasing the gas flow rate precision
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700 1 _ |a Burdzik, Andrea
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700 1 _ |a Stähler, Markus
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700 1 _ |a Carmo, Marcelo
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700 1 _ |a Lehnert, Werner
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700 1 _ |a Stolten, Detlef
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773 _ _ |a 10.1063/1.5036817
|g Vol. 89, no. 8, p. 083102 -
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|t Review of scientific instruments
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856 4 _ |y Published on 2018-08-03. Available in OpenAccess from 2019-08-03.
|u https://juser.fz-juelich.de/record/845361/files/1.5036817.pdf
856 4 _ |y Published on 2018-08-03. Available in OpenAccess from 2019-08-03.
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