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Development and integration of a LabVIEW-based modular architecture for automated execution of electrochemical catalyst testing
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10.1063/1.3660814
/content/aip/journal/rsi/82/11/10.1063/1.3660814
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/11/10.1063/1.3660814
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Extended consumer/producer design pattern of the top level of the code and the block diagram of CheckVI.

Image of FIG. 2.
FIG. 2.

Flow chart of the experimental procedure: (i) RHE measurement: The open circuit potential is measured in a H2-saturated solution with a rotation rate of 1600 rpm; (ii) Cleaning cycles: 25 cyclic voltammograms are recorded between +0.05 VRHE and +1.35 VRHE (scan rate: 0.05 V s−1) in Ar-atmosphere without rotation; (iii) ORR activity: 3 cyclic voltammograms for different rotation rates (400, 900, 1600, and 2500 rpm) each are recorded between +0.05 VRHE and +1.2 VRHE (scan rate: 0.05 V s−1) after saturation with O2; (iv) CO-stripping: After saturation with Ar, the solution is purged with CO while holding the potential at +0.05 VRHE for 7 min. Then, the solution is saturated with Ar by holding the same potential for 25 min. Finally, 3 cycles are recorded between +0.05 VRHE and +1.2 VRHE (scan rate: 0.05 V s−1); (v) Degradation cycles: Cycles between +0.4 VRHE and +1.4 VRHE (scan rate: 1 V s−1) are recorded in Ar-saturated solution. After a specific number of total cycles (360, 1080, 2160, 3600, 5400, and 7200 cycles), the CO-stripping procedure is repeated.

Image of FIG. 3.
FIG. 3.

Development of the cyclic voltammograms (+0.4 VRHE to +1.4 VRHE, scan rate: 1 V s−1) during continuous degradation testing. Two neighboring CVs are spaced 180 cycles.

Image of FIG. 4.
FIG. 4.

Normalized surface area vs. the number of cycles during the degradation procedure. The surface area was measured using the CO-stripping curves at specific number of cycles, as it is shown in the inset. The conditions are described in the caption of Fig. 2.

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/content/aip/journal/rsi/82/11/10.1063/1.3660814
2011-11-17
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Development and integration of a LabVIEW-based modular architecture for automated execution of electrochemical catalyst testing
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/11/10.1063/1.3660814
10.1063/1.3660814
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