University of Oulu

Geng, Shiyu; Wei, Jiayuan; Jonasson, Simon; Hedlund, Jonas; Oksman, Kristiina, Multifunctional carbon aerogels with hierarchical anisotropic structure derived from lignin and cellulose nanofibers for CO₂ capture and energy storage. ACS Appl. Mater. Interfaces 2020, 12, 6, 7432-7441.

Multifunctional carbon aerogels with hierarchical anisotropic structure derived from lignin and cellulose nanofibers for CO₂ capture and energy storage

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Author: Geng, Shiyu1; Wei, Jiayuan1; Jonasson, Simon1;
Organizations: 1Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden
2Chemical Technology, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97 187 Luleå, Sweden
3Fibre and Particle Engineering, University of Oulu, FI-90014 Oulu, Finland
4Mechanical & Industrial Engineering (MIE), University of Toronto, Toronto, ON, Canada M5S 3G8
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 5.6 MB)
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Language: English
Published: American Chemical Society, 2020
Publish Date: 2020-04-01


In current times, CO₂ capture and lightweight energy storage are receiving significant attention and will be vital functions in next-generation materials. Porous carbonaceous materials have great potential in these areas, whereas most of the developed carbon materials still have significant limitations, such as nonrenewable resources, complex and costly processing, or the absence of tailorable structure. In this study, a new strategy is developed for using the currently underutilized lignin and cellulose nanofibers, which can be extracted from renewable resources to produce high-performance multifunctional carbon aerogels with a tailorable, anisotropic pore structure. Both the macro- and microstructure of the carbon aerogels can be simultaneously controlled by carefully tuning the weight ratio of lignin to cellulose nanofibers in the precursors, which considerably influences their final porosity and surface area. The designed carbon aerogels demonstrate excellent performance in both CO₂ capture and capacitive energy storage, and the best results exhibit a CO₂ adsorption capacity of 5.23 mmol g–1 at 273 K and 100 kPa and a specific electrical double-layer capacitance of 124 F g–1 at a current density of 0.2 A g–1, indicating that they have great future potential in the relevant applications.

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Series: ACS applied materials & interfaces
ISSN: 1944-8244
ISSN-E: 1944-8252
ISSN-L: 1944-8244
Volume: 12
Issue: 6
Pages: 7432 - 7441
DOI: 10.1021/acsami.9b19955
Type of Publication: A1 Journal article – refereed
Field of Science: 220 Industrial biotechnology
216 Materials engineering
116 Chemical sciences
Funding: The authors appreciatively acknowledge Bio4Energy, Swedish Research Council, and FORMAS for financial supporting this research and Dr. Liang Yu and Mojtaba Nobandegani for their technical support regarding the CO2 adsorption measurements.
Copyright information: © 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium,provided the author and source are cited.