Solid-in-hollow polymer fiber electrochemical devices

Details Solid-in-hollow polymer fiber electrochemical devices Solid-in-hollow polymer fiber electrochemical devices

2007-10-30

2007-10-30

Gray, Jill (Department: 1774)

Electrical generator or motor structure

Non-dynamoelectric

C428S393000, C428S373000, C428S375000

Reexamination Certificate

active

10886001

ABSTRACT:
A linear electrochemical actuator is described where at least one electrically conductive (between 400 and 1000 S/cm), doped polyaniline solid fiber or a yarn produced from such fibers is disposed in an electrolyte inside of a electrically conductive polyaniline hollow fiber, thereby allowing 2-electrode operation without a metal backing. This is an example of the electrochemical devices of the present invention having a solid-in-hollow polymer fiber configuration. In a propylene carbonate electrolyte, the electrochemical and actuation behavior of the fibers was found to be influenced by the solubility and size of the polymer dopants. That is, solubility of the dopant in the electrolyte resulted in high electroactivity and strain in the fibers. Actuation of fibers was also affected by electrolyte anions, small anions resulting in anion-exchange dominated actuation, while large anions resulted in cation-exchange dominated actuation. Isotonic strains of 0.9% and isometric stresses of 0.9 MPa were realized for the solid-in-hollow polyaniline fiber actuators.

REFERENCES:
patent: 4743189 (1988-05-01), Samuelson
patent: 4861661 (1989-08-01), Samuelson
patent: 5556700 (1996-09-01), Kaneto et al.
patent: 5932309 (1999-08-01), Smith et al.
patent: 6074742 (2000-06-01), Smith et al.
patent: 6730399 (2004-05-01), Smith et al.
patent: 2003/0054158 (2003-03-01), Smith et al.
patent: 2004/0119187 (2004-06-01), Mattes et al.
patent: 357025416 (1982-02-01), None
patent: WO 99/24991 (1999-05-01), None
J.M. Machado et al. “Anisotropic mechanical properties of uniaxially oriented electrically conducting poly(p-phenylene vinylene)”. Polymer, 1989, vol. 30 pp. 1992-1996.
G. Horanyi et al. “Anion-Involvement in Electrochemical Transformations of Polyaniline. A Radiotracer Study”. Electrochimica Acta. vol. 30, No. 7 pp. 947-952. 1988.
E.M.Genies et al. “Electrochemical Behavior, Chronocoulometric and Kinetic Study of the Redox Mechanism of Polyaniline Deposits”. J. Electroanal. Chem. V 200. pp. 127-145. 1986.
A. Mazzoldi et al. “Actuative Properties of Polyaniline Fibers Under Electrochemical Stimulation”. Mat. Sci. Eng. vol. C6 pp. 65-72 1998.
L.Bay et al. “Potential Profile in a Conducting Polymer Strip”. Proc. SPIE. vol. 4329. pp. 54-58. 2001.
T. Kobayashi et al. “Polyaniline Film-Coated Electrodes as Electrochromic Display Devices”. J. Electroanalyt. Chem. vol. 161. pp. 419-423. 1984.
J.M. Sansinena et al. “A Solid State Artificial Muscle bbased on Polypyrrole and a Solid Polymeric Electrolyte Working in Air”. Chem. Commun. pp. 2217-2218 1997.
T.W. Lewis et al. “Development of an All-Polymer, Axial Force Electrochemical Actuator”. Synthetic Metals vol. 102. pp. 1317-1318. 1999.
W. Huang et al. “Polyaniline, a Novel Conducting Polymer”. J. Chem. Soc. Faraday Trans. vol. 82 pp. 2385-2400. 1986.
W. Lu et al. “Electrochemical Actuation of Gilded Polyaniline Bilayers in Aqueous Acid Solutions”. Proc. SPIE. vol. 4329 pp. 505-515. 2001.
M. Kaneko et al. “Electrolyet and Strain Dependences of Chemomechanical Deformation of Polyaniline Film”. Synthetic Metals vol. 84, pp. 795-796. 1997.
Q. Pei et al. “Electrochemical Applications of the Bending Beam Method. 1. Mass Transport and Volume Changes in Polypyrrole dur”. J. Phys. Chem. vol. 96, pp. 10507-10514. 1992.
K. Naoi et al. “Quartz Crystal Microbalance Study: Ionic Motion Across Conducting Polymers”. J. Electrochem. Soc. vol. 138, pp. 440-445. 1991.
W. Lu et al. “Development of Solid-in-Hollow Electrochemical Linear Actuators Using Highly Conductive Polyaniline”. Chem. Mater. vol. 16, pp. 1615-1621. 2004.

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