Battelle Memorial Institute

Mark Stasik

Jay R Sayre

Steven Risser

Bhima Rao Vijayendran

James L White

John R Stickel

Kelsey Doolittle

Megan E Sesslar

Vincent Daniel McGinniss

James C Kennedy

Megan Moore

Chuck A Plaxico

A supercapacitor-like device is described that uses a porous, conductive foam as the electrodes. After the device is charged, an explosive wave front can be used to remove electrolyte from the metal foam. This creates a large net charge on each electrode, which will readily flow through a load placed across the electrodes. The removal of charge can potentially occur on a time scale of microseconds, allowing a supercapacitor to be used in pulsed power applications. The creation of this net charge requires significant energy, meaning this concept may also be suitable for removing kinetic energy from objects.

Energy dense source for pulse power applications and novel electromagnetic armor

Methods and systems are provided for combined direct current and alternating current activation of electroactive polymer devices. The combined direct current and alternating current activation may increase force generation compared to activation using direct current alone. For example, a method for actuating an electroactive polymer device may include providing the electroactive polymer device. The electroactive polymer device may include a first electrode and a second electrode electrically coupled to an electroactive polymer. The method may include applying a direct current across the electroactive polymer via the first and second electrodes. The method may include applying an alternating current across the electroactive polymer. The direct current and the alternating current may be effective to cause actuation of the electroactive polymer device.

Increased force generation in electroactive polymers

Rotary motion devices () are provided. In one embodiment, the rotary motion devices () may comprise: a mass (); a circumferential component (); a plurality of spokes () connecting the mass () to the circumferential component (), at least one of the spokes () comprising an electroactive polymer, wherein: the at least one spoke () has at least one input electrode and is configured to deflect upon application of an electrical potential across the at least one input electrode, and the rotary motion device () is configured such that deflection of the at least one spoke () causes the mass () to move, thereby causing the rotary motion device () to become off balance with respect to gravity, and rotate.

Electroactive polymer (EAP)-based rotary motion devices

This invention relates in general to components of electrochemical devices, and to methods of preparing the components. The components and methods include the use of a composition comprising an ionically conductive polymer and at least one solvent, where the polymer and the solvent are selected based on the thermodynamics of the combination. In one embodiment, the invention relates to a component for an electrochemical device which is prepared from a composition comprising a true solution of an ionically conductive polymer and at least one solvent, the polymer and the at least one solvent being selected such that |&#x3b4; solvent&#x2212;&#x3b4; solute|&#x3c;1, where &#x3b4; solvent is the Hildebrand solubility parameter of the at least one solvent and where &#x3b4; solute is the Hildebrand solubility parameter of the polymer.

Solution based enhancements of fuel cell components and other electrochemical systems and devices

This invention relates in general to components of electrochemical devices, and to methods of preparing the components. The components and methods include the use of a composition comprising an ionically conductive polymer and at least one solvent, where the polymer and the solvent are selected based on the thermodynamics of the combination. In one embodiment, the invention relates to a component for an electrochemical device which is prepared from a composition comprising a true solution of an ionically conductive polymer and at least one solvent, the polymer and the at least one solvent being selected such that |&#x3b4; solvent&#x2212;&#x3b4; solute|&#x3c;1, where &#x3b4; solvent is the Hildebrand solubility parameter of the at least one solvent and where &#x3b4; solute is the Hildebrand solubility parameter of the polymer. In another embodiment, the invention relates to a method of improving at least one property of a component for an electrochemical device or at least one property of the electrochemical device, the method comprising preparing the component from a composition comprising a true solution of an ionically conductive polymer and at least one solvent, the polymer and the at least one solvent being selected such that |&#x3b4; solvent&#x2212;&#x3b4; solute|&#x3c;1, where &#x3b4; solvent is the Hildebrand solubility parameter of the at least one solvent and where &#x3b4; solute is the Hildebrand solubility parameter of the polymer.

Growing community of inventors

Columbus, OH, United States of America

Mark Stasik