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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

It consists of Teflon disc with concentrically positioned 8 glassy carbon discs (with diameter of 2 mm) as working electrodes. From the bottom side each electrode was electrically contacted with a golden pin and a wire (Fig. 5; also one wire was added for grounding all of the cables). In the middle of a Teflon disc a circular hole was drilled for the magnetic stirring stick. Counter electrode (platinum wire) is placed concentrically around working electrodes near the edge of the bottom part (see first image in Fig. 5).
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fig0015: It consists of Teflon disc with concentrically positioned 8 glassy carbon discs (with diameter of 2 mm) as working electrodes. From the bottom side each electrode was electrically contacted with a golden pin and a wire (Fig. 5; also one wire was added for grounding all of the cables). In the middle of a Teflon disc a circular hole was drilled for the magnetic stirring stick. Counter electrode (platinum wire) is placed concentrically around working electrodes near the edge of the bottom part (see first image in Fig. 5).

Mentions: Bottom part or the electrodes (Fig. 3).


Multielectrode Teflon electrochemical nanocatalyst investigation system.

Hodnik N - MethodsX (2015)

It consists of Teflon disc with concentrically positioned 8 glassy carbon discs (with diameter of 2 mm) as working electrodes. From the bottom side each electrode was electrically contacted with a golden pin and a wire (Fig. 5; also one wire was added for grounding all of the cables). In the middle of a Teflon disc a circular hole was drilled for the magnetic stirring stick. Counter electrode (platinum wire) is placed concentrically around working electrodes near the edge of the bottom part (see first image in Fig. 5).
© Copyright Policy - CC BY
Related In: Results  -  Collection

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

fig0015: It consists of Teflon disc with concentrically positioned 8 glassy carbon discs (with diameter of 2 mm) as working electrodes. From the bottom side each electrode was electrically contacted with a golden pin and a wire (Fig. 5; also one wire was added for grounding all of the cables). In the middle of a Teflon disc a circular hole was drilled for the magnetic stirring stick. Counter electrode (platinum wire) is placed concentrically around working electrodes near the edge of the bottom part (see first image in Fig. 5).
Mentions: Bottom part or the electrodes (Fig. 3).

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