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Multielectrode Teflon electrochemical nanocatalyst investigation system.

Hodnik N - MethodsX (2015)

Bottom Line: The well-established and most commonly used method for testing catalytic electrochemical activity under well-defined hydrodynamics is still thin film rotating disc electrode (TF-RDE).In order to avoid these issues a new multielectrode electrochemical cell design is presented, where 8 different electrocatalysts can be measured simultaneously at identical conditions.The major advantages over TF-RDE method are: •Faster catalyst screening times.•Greater impurity tolerance.•The option of internal standard.

View Article: PubMed Central - PubMed

Affiliation: Max-Planck-Institut für Eisenforschung GmbH, Max-Planck Str. 1, 40237 Düsseldorf, Germany ; National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.

ABSTRACT
The most common approach in the search for the optimal low temperature fuel cell catalyst remains "trial and error". Therefore, large numbers of different potential catalytic materials need to be screened. The well-established and most commonly used method for testing catalytic electrochemical activity under well-defined hydrodynamics is still thin film rotating disc electrode (TF-RDE). Typically this method is very time consuming and is subjected to impurity problems. In order to avoid these issues a new multielectrode electrochemical cell design is presented, where 8 different electrocatalysts can be measured simultaneously at identical conditions. The major advantages over TF-RDE method are: •Faster catalyst screening times.•Greater impurity tolerance.•The option of internal standard.

No MeSH data available.


Related in: MedlinePlus

Multielectrode Teflon cell assembly.
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fig0020: Multielectrode Teflon cell assembly.

Mentions: Multielectrode electrochemical cell assembly: As can be seen in Fig. 4, Fig. 5 the electrochemical cell was assembled by screwing the lower Teflon part with glassy carbon electrodes together with the middle oval Teflon part. Then the platinum wire as counter electrode was placed inside (see Fig. 5). Afterwards the electrolyte is filled and enclosed by the upper part. Reference electrode is inserted in the reference compartment, where it should be in contact with electrolyte. Finally, electrodes are connected to the potentiostat and gas connections are made. The channels leading to the reference electrode in the upper part should be centred above the working electrodes in order to lower the iR drop.


Multielectrode Teflon electrochemical nanocatalyst investigation system.

Hodnik N - MethodsX (2015)

Multielectrode Teflon cell assembly.
© Copyright Policy - CC BY
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4487726&req=5

fig0020: Multielectrode Teflon cell assembly.
Mentions: Multielectrode electrochemical cell assembly: As can be seen in Fig. 4, Fig. 5 the electrochemical cell was assembled by screwing the lower Teflon part with glassy carbon electrodes together with the middle oval Teflon part. Then the platinum wire as counter electrode was placed inside (see Fig. 5). Afterwards the electrolyte is filled and enclosed by the upper part. Reference electrode is inserted in the reference compartment, where it should be in contact with electrolyte. Finally, electrodes are connected to the potentiostat and gas connections are made. The channels leading to the reference electrode in the upper part should be centred above the working electrodes in order to lower the iR drop.

Bottom Line: The well-established and most commonly used method for testing catalytic electrochemical activity under well-defined hydrodynamics is still thin film rotating disc electrode (TF-RDE).In order to avoid these issues a new multielectrode electrochemical cell design is presented, where 8 different electrocatalysts can be measured simultaneously at identical conditions.The major advantages over TF-RDE method are: •Faster catalyst screening times.•Greater impurity tolerance.•The option of internal standard.

View Article: PubMed Central - PubMed

Affiliation: Max-Planck-Institut für Eisenforschung GmbH, Max-Planck Str. 1, 40237 Düsseldorf, Germany ; National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.

ABSTRACT
The most common approach in the search for the optimal low temperature fuel cell catalyst remains "trial and error". Therefore, large numbers of different potential catalytic materials need to be screened. The well-established and most commonly used method for testing catalytic electrochemical activity under well-defined hydrodynamics is still thin film rotating disc electrode (TF-RDE). Typically this method is very time consuming and is subjected to impurity problems. In order to avoid these issues a new multielectrode electrochemical cell design is presented, where 8 different electrocatalysts can be measured simultaneously at identical conditions. The major advantages over TF-RDE method are: •Faster catalyst screening times.•Greater impurity tolerance.•The option of internal standard.

No MeSH data available.


Related in: MedlinePlus