Chemo-electric characterization and modeling of the high surface area electrodes in ionic polymer transducers

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dc.contributor.author Akle, Barbar J.
dc.contributor.author Wallmersperger, Thomas
dc.contributor.author Akle, Etienne
dc.contributor.author Leo, Donald J.
dc.date.accessioned 2018-01-22T14:00:34Z
dc.date.available 2018-01-22T14:00:34Z
dc.date.copyright 2007 en_US
dc.date.issued 2018-01-22
dc.identifier.uri http://hdl.handle.net/10725/6932
dc.description.abstract Ionomeric polymer transducers have received considerable attention in the past ten years due to their ability to generate large bending strain and moderate stress at low applied voltages. Ionic polymer transducers consist of an ionomer, usually Nafion, sandwiched between two electrically conductive electrodes. Recently, a novel fabrication technique denoted as the direct assembly process (DAP) enabled controlled electrode architecture in ionic polymer transducers. A DAP transducer consists of two high surface area electrodes made of uniform distributed particles sandwiching an ionomer membrane. In this paper theoretical investigations as well as experimental verifications are performed. The model consists of a convection-diffusion equation describing the chemical field as well as a Poisson equation describing the electrical field. This modeling technique is modified to capture the chemo-electric behavior in the high surface area electrodes of a DAP fabricated transducer. The model assumes highly conductive particles randomly distributed in the electrode area. This is the first electro-chemical modeling account of high surface area electrodes in ionic polymer transducers. Traditionally, these kinds of electrodes were simulated with boundary conditions representing flat electrodes with a large dielectric permittivity at the polymer boundary. In the experimental section, several transducers are fabricated using the DAP process on Nafion 117 membranes. The architecture of the high surface area electrodes in these samples is varied. The concentration of the spherical gold particles is varied from 30 vol% up to 60 vol%, while the overall thickness of the electrode is varied from 10 &mgr;m up to 40 &mgr;m micrometer at a fixed concentration. The flux and charge accumulation in the materials are measured experimentally and compared to the results of the numerical simulations. Finally, the high surface area electrodes are compared to flat gold electrodes. en_US
dc.language.iso en en_US
dc.title Chemo-electric characterization and modeling of the high surface area electrodes in ionic polymer transducers en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 200700940 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Electrodes en_US
dc.keywords Transducers en_US
dc.keywords Polymers en_US
dc.keywords Particles en_US
dc.keywords Gold en_US
dc.keywords Numerical simulations en_US
dc.keywords Data modeling en_US
dc.identifier.doi http://dx.doi.org/10.1117/12.714011 en_US
dc.identifier.ctation Wallmersperger, T., Akle, B. J., Akle, E., & Leo, D. J. (2007, April). Chemo-electric characterization and modeling of the high surface area electrodes in ionic polymer transducers. In Electroactive Polymer Actuators and Devices (EAPAD) 2007 (Vol. 6524, p. 65240S). International Society for Optics and Photonics. en_US
dc.author.email barbar.akle@lau.edu.lb en_US
dc.conference.date 4 April 2007 en_US
dc.conference.place San Diego, California, United States en_US
dc.conference.title SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6524/65240S/Chemo-electric-characterization-and-modeling-of-the-high-surface-area/10.1117/12.714011.short en_US
dc.author.affiliation Lebanese American University en_US

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