Electrode reactions in Cu-Pt coated ionic polymer actuators

被引：32

作者：

Johanson, Urmas ^{[1
]}

Maeorg, Uno ^{[2
]}

Sammelselg, Vaino ^{[3
]}

Brandell, Daniel ^{[1
]}

Punning, Andres ^{[1
]}

Kruusmaa, Maarja ^{[1
]}

Aabloo, Alvo ^{[1
]}

机构：

[1] Univ Tartu, Inst Technol, EE-50411 Tartu, Estonia

[2] Univ Tartu, Inst Organ Chem, EE-50411 Tartu, Estonia

[3] Univ Tartu, Inst Psys, EE-50411 Tartu, Estonia

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 131卷 / 01期

关键词：

ionomeric polymer-metal composite; nation; copper-platinum electrode; electrode resistance; copper growth; SEM;

D O I：

10.1016/j.snb.2007.11.044

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Composite actuators consisting of sheets of the solid polymer electrolyte (similar to Nation((R))) with CU2+ counter ions inserted and coated with platinum and copper metal layers (so-called ionomeric polymer-metal composites; IPMCs) have been synthesised and their electromechanical performance upon actuation has been monitored. Resistance measurements on the electrodes show that the electrical conductivity of the membrpes metal surface increases on the cathode side during the actuation process, contradictory to the situation when Cu is absent from the metal coating. This phenomenon is explained by the subsequent reduction of Cu2+ ions on the cathode upon actuation; Cu layer growth in this side prevents it from cracking and decreases its electrode resistance. The phenomenon opens up for longer lifetimes for Cu-based IPMCs. However, additional problems with Cu layer oxidation and Cu dendrite growth on the electrodes should be considered. (c) 2007 Elsevier B. V. All rights reserved.

引用

页码：340 / 346

页数：7

共 14 条

[11] Ionic polymer-metal composites: IV. Industrial and medical applications [J].