Solid-in-hollow polymer fiber electrochemical devices

Electrical generator or motor structure – Non-dynamoelectric

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


C428S393000, C428S373000, C428S375000

Reexamination Certificate



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.

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.


Say what you really think

Search for the USA inventors and patents. Rate them and share your experience with other people.


Solid-in-hollow polymer fiber electrochemical devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solid-in-hollow polymer fiber electrochemical devices, we encourage you to share that experience with our community. Your opinion is very important and Solid-in-hollow polymer fiber electrochemical devices will most certainly appreciate the feedback.

Rate now


Profile ID: LFUS-PAI-O-3901706

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.