Multifunctional Carbon Aerogels with Hierarchical Anisotropic Structure Derived from Lignin and Cellulose Nanofibers for CO2 Capture and Energy Storage
| Autor: | Jonas Hedlund, Kristiina Oksman, Jiayuan Wei, Shiyu Geng, Simon Jonasson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
carbon aerogels
Materials science Chemical substance chemistry.chemical_element lignin 02 engineering and technology 010402 general chemistry 01 natural sciences Energy storage chemistry.chemical_compound Lignin General Materials Science Cellulose Porosity cellulose nanofibers Supercapacitor supercapacitors 021001 nanoscience & nanotechnology CO2 capture 0104 chemical sciences chemistry Chemical engineering Nanofiber 0210 nano-technology Carbon Research Article |
| Zdroj: | ACS Applied Materials & Interfaces |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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