Preparation of Gold−Solid Polymer Electrolyte Composites As Electric Stimuli-Responsive Materials

Fujiwara, Naoko; Asaka, Kinji; Nishimura, Yasuo; Oguro, Keisuke; Torikai, Eiichi

doi:10.1021/cm9907357

Cited by 138 publications

(82 citation statements)

References 25 publications

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“…Deposition of the gold electrodes on Flemion is done according to the impregnation reduction technique 7 . In this technique a cationic gold complex [Au(Phen) Cl 2 ] + is first introduced in the membrane through ion exchange.…”

Section: Polymer Metal Composite Preparationmentioning

confidence: 99%

“…It consumes very low power and may achieve similar performance as the current mechanical switches driven by small electromagnet. In this work, a plating recipe to create flexible and highly conductive gold electrodes on Flemion is developed based on the impregnation reduction technique for Nafion developed by Fujiwara et al 7 . The ion exchange behavior of Flemion is studied.…”

Section: Introductionmentioning

confidence: 99%

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Flemion-based actuator for mechanically controlled microwave switch

Guilly

Cheng

et al. 2003

SPIE Proceedings

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A microwave switch based on EAP presents several advantages. A switch based on Flemion is studied. Flemion a perfluorinated carboxylic acid membrane shows improved performance as actuator material compared with Nafion (perfluorinated sulfonic acid). Flemion has a higher ion exchange capacity and good mechanical strength. In order to get a good Flemion actuator, highly conductive soft gold electrodes with large fractal structure have to be deposited on the membrane. The impregnation reduction technique used for plating requires exchange of a gold complex and reduction by gradual sodium sulfite additions. K + shows the highest exchange ratio with the gold complex and reducing bath temperatures around 60°C with enough reducing agent present are shown to promote the growth of a gold fractal structure. The resulting material shows an actuation displacement with no relaxation, a key feature for switch applications. A simple mechanical switch based on a flemion actuator is prepared and tested as a microwave switch.

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Section: Polymer Metal Composite Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flemion-based actuator for mechanically controlled microwave switch

Guilly

Cheng

et al. 2003

SPIE Proceedings

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“…Here, we report an IR method for the preparation of Au/PEM composites and their application to electric stimuli-responsive actuators. 11 We used cationic gold complexes with organic chelate ligands, (dichloro)(phenanthroline) gold (III) chloride ([Au(phen)Cl 2 ]Cl), as a suitable gold precursor for the deposition of gold by the IR method. After the ion-exchange of H + in the Nafion 117 membrane by [Au(phen)Cl 2 ] + , the membrane was exposed to reducing solutions (Fig.…”

Section: Polymer Actuatorsmentioning

confidence: 99%

Electrochemical Devices with Metal-Polymer Electrolyte Membrane Composites

Fujiwara

2017

Electrochemistry

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This paper summarizes our previous studies on the application of metal/polymer electrolyte membrane composites to three kinds of electrochemical devices: polymer actuators, direct polymer electrolyte fuel cells, and air electrodes for use in metal-air batteries. Au composites were successfully prepared in a wet condition and their use as actuator devices showed rapid bending toward the anode in response to an applied voltage of 2.0 V in water without gas evolution. Direct polymer electrolyte fuel cells have also been reported as typical examples of the application of a polymer electrolyte membrane. These are represented by direct ascorbic acid fuel cells that use carbon anodes without exhausting any harmful chemicals, and by the technical advantages of an anion-exchange membrane alternative to the conventional cation-exchange membrane in direct fuel cells with ethanol or glucose fuels. Finally, a reversible air electrode for the oxygen reduction and evolution reaction was integrated with an anion-exchange membrane to diminish the influence of atmospheric carbon dioxide on the oxygen reaction.

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“…Nafion N-117 (1100 equivalent weight, 178 µm thick) membranes are used as the control material for this study. The electrodes were plated on the polymers using impregnation-reduction method 16,17 . The Nafion membrane (as received) was immerged in HCl 1M solution, 60°C in order to impregnate H + ions.…”

Section: Experimental 21 Sample Preparationmentioning

confidence: 99%

Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

et al. 2015

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The ionomeric electroactive polymers-metal composites (IPMC) are materials that realize bending movements in response to an electrical stimulus and can be applied to the artificial muscles development. This paper investigated the influence of the hydration level on the electromechanical behavior of Nafion based IPMC. An experimental apparatus composed by a system to measure the bending force and to control the electrical stimulus and the relative humidity around the sample was developed. The main results indicated that samples with higher hydration level produce larger bending forces, but they show a more expressive back relaxation with lower time constant. A discussion about the results considering some models described in the literature conclude the paper.

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Preparation of Gold−Solid Polymer Electrolyte Composites As Electric Stimuli-Responsive Materials

Cited by 138 publications

References 25 publications

Flemion-based actuator for mechanically controlled microwave switch

Flemion-based actuator for mechanically controlled microwave switch

Electrochemical Devices with Metal-Polymer Electrolyte Membrane Composites

Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

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