Conductive thin film, laminate, actuator element, and method for manufacturing the same

Abstract

This invention provides conductive thin films, laminates, actuator elements, and methods for manufacturing the same, using a water-soluble conductive polymer. [Solution] A conductive thin film comprising a conductive polymer, carbon nanotubes, and an ionic liquid, wherein the conductive polymer has repeating units represented by the following formulas (1) and / or (2). JPEG2026104773000035.jpg30169 In the formula, R1 and R2 are the same or different and represent an alkylene group. The sum of the number of carbon atoms in R1 and R2 is between 2 and 10. M1 represents a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base. The actuator element has a structure in which a conductive thin film layer and an ion conductive layer are stacked, with at least two conductive thin film layers formed on the surface of the ion conductive layer in an insulated state from each other, and deforms when a potential difference is applied to the conductive thin film layer.

Claims

1. A conductive thin film comprising a conductive polymer, carbon nanotubes, and an ionic liquid, A conductive thin film wherein the conductive polymer is a polymer having repeating units represented by the following formula (1) and / or formula (2). 【Chemistry 1】 (In the formula, R １ and R ２ These are identical or different and represent an alkylene group. １ and R ２ The sum of the number of carbon atoms is between 2 and 10. １ (This represents a hydrogen atom, alkali metal, ammonium base, or organic amine base.) 【Chemistry 2】 (In the formula, R ３ This represents an alkylene group with 1 to 5 carbon atoms. ２ (This represents a hydrogen atom, alkali metal, ammonium base, or organic amine base.)

2. R in the repeating unit represented by the formula (1) １ is a methylene group, and R ２ is an alkylene group having 3 to 5 carbon atoms, the conductive thin film according to claim 1.

3. R in the repeating unit represented by formula (2) above ３ The conductive thin film according to claim 1, wherein is an alkylene group having 1 or 2 carbon atoms.

4. A laminate comprising a conductive thin film layer made of the conductive thin film described in claim 1 and an ion conductive layer.

5. An actuator element comprising the laminate described in claim 4.

6. The actuator element according to claim 5, wherein at least two conductive thin film layers, each having a conductive thin film as described in claim 1 as an electrode, are formed on the surface of an ion-conducting layer in an insulated state from each other, and the conductive thin film layers are configured to be deformable by applying a potential difference to them.

7. A method for manufacturing an actuator element, characterized by including the following steps: Step 1: A step of preparing a dispersion containing a polymer having repeating units represented by the following formula (1) and / or formula (2), carbon nanotubes, an ionic liquid, and a solvent; 【Transformation 3】 (In the formula, R １ and R ２ These are identical or different and represent an alkylene group. １ and R ２ The sum of the number of carbon atoms is between 2 and 10. M is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base. 【Chemistry 4】 (In the formula, R ３ This represents an alkylene group with 1 to 5 carbon atoms. ２ (This represents a hydrogen atom, alkali metal, ammonium base, or organic amine base.) Step 2: A step of preparing a solution comprising a base polymer, a solvent, and an ionic liquid; Step 3: A step to form a laminate of a conductive thin film layer and an ion-conducting layer by simultaneously or sequentially forming a conductive thin film layer using the dispersion from Step 1 and forming an ion-conducting layer using the solution from Step 2.

8. A method for manufacturing an actuator element, characterized by including the following steps: Step 1: A step of preparing a dispersion containing a polymer having repeating units represented by the following formula (1) and / or formula (2), carbon nanotubes, an ionic liquid, and a solvent; 【Transformation 5】 (In the formula, R １ and R ２ These are identical or different and represent an alkylene group. １ and R ２ The sum of the number of carbon atoms is between 2 and 10. M is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base. 【Transformation 6】 (In the formula, R ３ This represents an alkylene group with 1 to 5 carbon atoms. ２ (This represents a hydrogen atom, alkali metal, ammonium base, or organic amine base.) Step 2: A step of preparing a solution comprising a base polymer, a solvent, and an ionic liquid; Step 3: A step of forming a conductive thin film using the dispersion from Step 1 by casting, printing, coating, extrusion, or injection; Step 4: A step of forming an ion-conducting layer using the solution from Step 2 by casting, printing, coating, extrusion, or injection; Step 5: A step in which the conductive thin film formed in Step 3 and the ion conductive layer formed in Step 4 are laminated by pressure bonding to form a laminate.

9. In step 3, after forming the conductive thin film, The density can be increased by thermally compacting a conductive thin film, or by thermally bonding and compacting several conductive thin films simultaneously. A method for manufacturing an actuator element according to claim 8, further comprising:

10. A method for manufacturing an actuator element, characterized by including the following steps: Step 1: A step of preparing a dispersion containing a polymer having repeating units represented by the following formula (1) and / or formula (2), carbon nanotubes, an ionic liquid, and a solvent; 【Transformation 7】 (In the formula, R １ and R ２ These are identical or different and represent an alkylene group. １ and R ２ The sum of the number of carbon atoms is between 2 and 10. M is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base. 【Transformation 8】 (In the formula, R ３ This represents an alkylene group with 1 to 5 carbon atoms. ２ (This represents a hydrogen atom, alkali metal, ammonium base, or organic amine base.) Step 2: A step of preparing a solution comprising a base polymer, a solvent, and an ionic liquid; Step 3: A step in which a conductive thin film is formed by casting and heating using the dispersion from Step 1; Step 4: A step to form an ion-conducting layer by casting and heating using the solution from Step 2; Step 5: A step in which the conductive thin film formed in Step 3 and the ion conductive layer formed in Step 4 are laminated by pressure bonding to form a laminate.

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