Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications
Various carbon materials have been developed for energy storage applications to address the increasing energy demand in the world. However, the environmentally friendly, renewable, and nontoxic bio-based carbon resources have not been extensively investigated towards high-performance energy storage...
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doaj-f5d580cf4b9a459ca6558188f9241d772021-03-09T00:00:47ZengMDPI AGNanomaterials2079-49912021-03-011165365310.3390/nano11030653Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage ApplicationsBony Thomas0Shiyu Geng1Mohini Sain2Kristiina Oksman3Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, SwedenDivision of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, SwedenDivision of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, SwedenDivision of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, SwedenVarious carbon materials have been developed for energy storage applications to address the increasing energy demand in the world. However, the environmentally friendly, renewable, and nontoxic bio-based carbon resources have not been extensively investigated towards high-performance energy storage materials. Here, we report an anisotropic, hetero-porous, high-surface area carbon aerogel prepared from renewable resources achieving an excellent electrical double-layer capacitance. Two different green, abundant, and carbon-rich lignins which can be extracted from various biomasses, have been selected as raw materials, i.e., kraft and soda lignins, resulting in clearly distinct physical, structural as well as electrochemical characteristics of the carbon aerogels after carbonization. The obtained green carbon aerogel based on kraft lignin not only demonstrates a competitive specific capacitance as high as 163 F g<sup>−1</sup> and energy density of 5.67 Wh kg<sup>−1</sup> at a power density of 50 W kg<sup>−1</sup> when assembled as a two-electrode symmetric supercapacitor, but also shows outstanding compressive mechanical properties. This reveals the great potential of the carbon aerogels developed in this study for the next-generation energy storage applications requiring green and renewable resources, lightweight, robust storage ability, and reliable mechanical integrity.https://www.mdpi.com/2079-4991/11/3/653carbon aerogelslignincellulose nanofiberselectrochemical propertiesenergy storage |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bony Thomas Shiyu Geng Mohini Sain Kristiina Oksman |
spellingShingle |
Bony Thomas Shiyu Geng Mohini Sain Kristiina Oksman Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications Nanomaterials carbon aerogels lignin cellulose nanofibers electrochemical properties energy storage |
author_facet |
Bony Thomas Shiyu Geng Mohini Sain Kristiina Oksman |
author_sort |
Bony Thomas |
title |
Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications |
title_short |
Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications |
title_full |
Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications |
title_fullStr |
Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications |
title_full_unstemmed |
Hetero-Porous, High-Surface Area Green Carbon Aerogels for the Next-Generation Energy Storage Applications |
title_sort |
hetero-porous, high-surface area green carbon aerogels for the next-generation energy storage applications |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2021-03-01 |
description |
Various carbon materials have been developed for energy storage applications to address the increasing energy demand in the world. However, the environmentally friendly, renewable, and nontoxic bio-based carbon resources have not been extensively investigated towards high-performance energy storage materials. Here, we report an anisotropic, hetero-porous, high-surface area carbon aerogel prepared from renewable resources achieving an excellent electrical double-layer capacitance. Two different green, abundant, and carbon-rich lignins which can be extracted from various biomasses, have been selected as raw materials, i.e., kraft and soda lignins, resulting in clearly distinct physical, structural as well as electrochemical characteristics of the carbon aerogels after carbonization. The obtained green carbon aerogel based on kraft lignin not only demonstrates a competitive specific capacitance as high as 163 F g<sup>−1</sup> and energy density of 5.67 Wh kg<sup>−1</sup> at a power density of 50 W kg<sup>−1</sup> when assembled as a two-electrode symmetric supercapacitor, but also shows outstanding compressive mechanical properties. This reveals the great potential of the carbon aerogels developed in this study for the next-generation energy storage applications requiring green and renewable resources, lightweight, robust storage ability, and reliable mechanical integrity. |
topic |
carbon aerogels lignin cellulose nanofibers electrochemical properties energy storage |
url |
https://www.mdpi.com/2079-4991/11/3/653 |
work_keys_str_mv |
AT bonythomas heteroporoushighsurfaceareagreencarbonaerogelsforthenextgenerationenergystorageapplications AT shiyugeng heteroporoushighsurfaceareagreencarbonaerogelsforthenextgenerationenergystorageapplications AT mohinisain heteroporoushighsurfaceareagreencarbonaerogelsforthenextgenerationenergystorageapplications AT kristiinaoksman heteroporoushighsurfaceareagreencarbonaerogelsforthenextgenerationenergystorageapplications |
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