Meso-porous carbon and hybrid electrodes and method for producing the same
First Claim
1. A method for producing a porous carbon electrode according to a predetermined, two-dimensional or three-dimensional porous template, the method comprising the steps of:
- (A) preparing said porous template, wherein said preparation step comprises the sub-steps of (i) dissolving a first material in a volatile solvent to form an evaporative solution, (ii) depositing a thin film or lamina of said solution onto a substrate, and (iii) exposing said solution film to a moisture environment while allowing the solvent of said solution to evaporate for forming said template which is a lamina constituted of an ordered array of micrometer- or nanometer-scaled air bubbles which are surrounded with walls made of said first material; and
(B) operating material treatment means to convert said first material into a carbonaceous material and to generate meso-scaled pores in said walls to produce said porous carbon electrode.
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Abstract
A porous carbon-based electrode and a method for producing such an electrode according to a predetermined, two-dimensional or three-dimensional porous template. The method includes the steps of: (A) preparing a porous template by taking the sub-steps of (i) dissolving a first material in a volatile solvent to form an evaporative solution, (ii) depositing a thin film or lamina of this solution onto a substrate, and (iii) exposing this solution film to a moisture environment while allowing the solvent of the solution to evaporate for forming the template, which is a lamina constituted of an ordered array of micrometer- or nanometer-scaled air bubbles being surrounded with walls made of the first material; and (B) operating material treatment means to convert the first material into a carbonaceous material by which meso-scaled pores are also produced in the bubble walls. The resulting porous carbon electrode can be used in a device such as a fuel cell, ultracapacitor, electrochemical cell, battery, and electrochemical sensor.
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Citations
22 Claims
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1. A method for producing a porous carbon electrode according to a predetermined, two-dimensional or three-dimensional porous template, the method comprising the steps of:
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(A) preparing said porous template, wherein said preparation step comprises the sub-steps of (i) dissolving a first material in a volatile solvent to form an evaporative solution, (ii) depositing a thin film or lamina of said solution onto a substrate, and (iii) exposing said solution film to a moisture environment while allowing the solvent of said solution to evaporate for forming said template which is a lamina constituted of an ordered array of micrometer- or nanometer-scaled air bubbles which are surrounded with walls made of said first material; and
(B) operating material treatment means to convert said first material into a carbonaceous material and to generate meso-scaled pores in said walls to produce said porous carbon electrode. - View Dependent Claims (2, 3, 4, 7, 8, 9, 11, 15, 16, 17, 18, 19, 20, 21, 22)
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5. A method for producing a porous carbon electrode according to a predetermined, two-dimensional or three-dimensional porous template, the method comprising the steps of:
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(A) preparing said porous template, wherein said preparation step comprises the sub-steps of (i) dissolving a first material in a volatile solvent to form an evaporative solution, (ii) depositing a thin film or lamina of said solution onto a substrate, and (iii) exposing said solution film to a moisture environment while allowing the solvent of said solution to evaporate for forming said template which is a lamina constituted of an ordered array of micrometer- or nanometer-scaled air bubbles which are surrounded with walls made of said first material;
(B) impregnating said air bubbles with a second material so that the bubble walls are coated with said second material; and
(C) operating material treatment means to convert said first and/or second material into a carbonaceous material and to generate meso-scaled pores in said walls to produce said porous carbon electrode. - View Dependent Claims (6, 10, 12, 13, 14)
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Specification