ACTUATOR

• US 20100244633A1
• Filed: 03/16/2010
• Published: 09/30/2010
• Est. Priority Date: 03/31/2009
• Status: Active Grant

• Current Assignee: Dexerials Corporation
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nagai, Nobuyuki, Murakami, Kazuomi, Sugasawa, Masayuki
• Granted Patent: US 8,350,448 B2
• Time in Patent Office: Days
• US Class Current: 310/364
• CPC Class Codes: H01B 1/122 Ionic conductors
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon

Abstract

An actuator includes: an ion conductive polymer layer including an ion conductive polymer; a pair of electrode layers disposed on both surfaces of the ion conductive polymer layer; and an ionic liquid contained in the ion conductive polymer layer and the electrode layers; wherein the electrode layers contain at least an ion conductive polymer and carbon powder, and kinds of carbon powders included on an inside and an outside of the electrode layers are different from each other.

Claims

1. An actuator comprising:

an ion conductive polymer layer including an ion conductive polymer;

a pair of electrode layers disposed on both surfaces of said ion conductive polymer layer; and

an ionic liquid contained in said ion conductive polymer layer and said electrode layers;

wherein said electrode layers contain at least an ion conductive polymer and carbon powder, and kinds of carbon powders included on an inside and an outside of said electrode layers are different from each other.

2. The actuator according to claim 1,

wherein said electrode layers has a region where the carbon powder situated on the inside and the carbon powder situated on the outside are mixed with each other, and a ratio between the carbon powders changes gradually.

3. The actuator according to claim 1,

wherein the carbon powder situated on the inside of said electrode layers has a smaller specific surface area than the carbon powder situated on the outside.

4. The actuator according to claim 3,

wherein the specific surface area of the carbon powders present in said electrode layers is increased with increasing distance from the ion conductive polymer layer.

5. The actuator according to claim 1,

wherein the carbon powder situated on the inside of said electrode layers has a larger particle size than the carbon powder situated on the outside.

6. The actuator according to claim 5,

wherein the particle size of the carbon powders present in said electrode layers is decreased with increasing distance from the ion conductive polymer layer.

7. The actuator according to claim 1,

wherein a metallic conductive layer is disposed on each electrode layer.