Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material
Bio-based activated carbons with very high specific surface area of >3.000 m² g<sup>−1</sup> (based on CO<sub>2</sub> adsorption isotherms) and a high proportion of micropores (87% of total SSA) are produced by corncobs via pyrolysis and chemical activation with KOH. The a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Electronic Materials |
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| Online Access: | https://www.mdpi.com/2673-3978/2/3/23 |
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| author | Viola Hoffmann Catalina Rodriguez Correa Saskia Sachs Andrea del Pilar Sandoval-Rojas Mo Qiao Avery B. Brown Michael Zimmermann Jenny Paola Rodriguez Estupiñan Maria Teresa Cortes Juan Manuel Carlos Moreno Pirajan Maria-Magdalena Titirici Andrea Kruse |
| author_facet | Viola Hoffmann Catalina Rodriguez Correa Saskia Sachs Andrea del Pilar Sandoval-Rojas Mo Qiao Avery B. Brown Michael Zimmermann Jenny Paola Rodriguez Estupiñan Maria Teresa Cortes Juan Manuel Carlos Moreno Pirajan Maria-Magdalena Titirici Andrea Kruse |
| author_sort | Viola Hoffmann |
| collection | DOAJ |
| description | Bio-based activated carbons with very high specific surface area of >3.000 m² g<sup>−1</sup> (based on CO<sub>2</sub> adsorption isotherms) and a high proportion of micropores (87% of total SSA) are produced by corncobs via pyrolysis and chemical activation with KOH. The activated carbon is further doped with different proportions of the highly pseudocapacitive transition metal oxide RuO<sub>2</sub> to obtain enhanced electrochemical properties and tune the materials for the application in electrochemical double-layer capacitors (EDLC) (supercapacitors). The activated carbon and composites are extensively studied regarding their physico-chemical and electrochemical properties. The results show that the composite containing 40 wt.% RuO<sub>2</sub> has an electric conductivity of 408 S m<sup>−1</sup> and a specific capacitance of 360 Fg<sup>−1</sup>. SEM-EDX, XPS, and XRD analysis confirm the homogenous distribution of partly crystalline RuO<sub>2</sub> particles on the carbon surface, which leads to a biobased composite material with enhanced electrochemical properties. |
| first_indexed | 2024-03-10T07:44:18Z |
| format | Article |
| id | doaj.art-3b79802de3cc499da0bb079eaabdd3a5 |
| institution | Directory Open Access Journal |
| issn | 2673-3978 |
| language | English |
| last_indexed | 2024-03-10T07:44:18Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronic Materials |
| spelling | doaj.art-3b79802de3cc499da0bb079eaabdd3a52023-11-22T12:47:00ZengMDPI AGElectronic Materials2673-39782021-08-012332434310.3390/electronicmat2030023Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode MaterialViola Hoffmann0Catalina Rodriguez Correa1Saskia Sachs2Andrea del Pilar Sandoval-Rojas3Mo Qiao4Avery B. Brown5Michael Zimmermann6Jenny Paola Rodriguez Estupiñan7Maria Teresa Cortes8Juan Manuel Carlos Moreno Pirajan9Maria-Magdalena Titirici10Andrea Kruse11Department of Conversion Technologies of Biobased Resources, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, GermanyDepartment of Conversion Technologies of Biobased Resources, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, GermanyDepartment of Conversion Technologies of Biobased Resources, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, GermanyDepartamento de Química, Universidad Nacional de Colombia-Sede Bogotá, Av. Carrera 30 #45-03, Bogota 111711, ColombiaDepartment of Chemical Engineering, Imperial College London, South Kensington Campus, London SW72AZ, UKWorcester Polytechnic Institute, Department of Chemical Engineering, 100 Institute Road, Goddard Hall 129, Worcester, MA 0160, USAKarlsruhe Institute for Technology (KIT), Institute for Catalysis Research and Technology (IKFT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyDepartamento de Química, Universidad de los Andes, Carrera 1 #18A-12, Bogota 111711, ColombiaDepartamento de Química, Universidad de los Andes, Carrera 1 #18A-12, Bogota 111711, ColombiaDepartamento de Química, Universidad de los Andes, Carrera 1 #18A-12, Bogota 111711, ColombiaDepartment of Chemical Engineering, Imperial College London, South Kensington Campus, London SW72AZ, UKDepartment of Conversion Technologies of Biobased Resources, Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, GermanyBio-based activated carbons with very high specific surface area of >3.000 m² g<sup>−1</sup> (based on CO<sub>2</sub> adsorption isotherms) and a high proportion of micropores (87% of total SSA) are produced by corncobs via pyrolysis and chemical activation with KOH. The activated carbon is further doped with different proportions of the highly pseudocapacitive transition metal oxide RuO<sub>2</sub> to obtain enhanced electrochemical properties and tune the materials for the application in electrochemical double-layer capacitors (EDLC) (supercapacitors). The activated carbon and composites are extensively studied regarding their physico-chemical and electrochemical properties. The results show that the composite containing 40 wt.% RuO<sub>2</sub> has an electric conductivity of 408 S m<sup>−1</sup> and a specific capacitance of 360 Fg<sup>−1</sup>. SEM-EDX, XPS, and XRD analysis confirm the homogenous distribution of partly crystalline RuO<sub>2</sub> particles on the carbon surface, which leads to a biobased composite material with enhanced electrochemical properties.https://www.mdpi.com/2673-3978/2/3/23advanced carbonbiobased conductive carbonenergy storage |
| spellingShingle | Viola Hoffmann Catalina Rodriguez Correa Saskia Sachs Andrea del Pilar Sandoval-Rojas Mo Qiao Avery B. Brown Michael Zimmermann Jenny Paola Rodriguez Estupiñan Maria Teresa Cortes Juan Manuel Carlos Moreno Pirajan Maria-Magdalena Titirici Andrea Kruse Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material Electronic Materials advanced carbon biobased conductive carbon energy storage |
| title | Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material |
| title_full | Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material |
| title_fullStr | Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material |
| title_full_unstemmed | Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material |
| title_short | Activated Carbon from Corncobs Doped with RuO<sub>2</sub> as Biobased Electrode Material |
| title_sort | activated carbon from corncobs doped with ruo sub 2 sub as biobased electrode material |
| topic | advanced carbon biobased conductive carbon energy storage |
| url | https://www.mdpi.com/2673-3978/2/3/23 |
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