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Lignin–Chitosan Gel...
Lignin–Chitosan Gel Polymer Electrolytes for Stable Zn Electrodeposition
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- Almenara Perez, Naroa (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Gueret, Robin (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Huertas-Alonso, Alberto José, 1988- (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Thalakkale Veettil, Unnimaya, 1998- (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Sipponen, Mika H. (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Lizundia, Erlantz (author)
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(creator_code:org_t)
- 2023-01-30
- 2023
- English.
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In: ACS Sustainable Chemistry and Engineering. - : American Chemical Society (ACS). - 2168-0485. ; 11:6, s. 2283-2294
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Electrochemical energy storage technologies offer means to transition toward a decarbonized society and carbon neutrality by 2050. Compared to conventional lithium-ion batteries, aqueous zinc-ion chemistries do not require scarce materials or toxic and flammable organic-based electrolytes to function, making them favorable contenders in the scenario of intensifying climate change and supply chain crisis. However, environmentally benign and bio-based materials are needed to substitute fossil-based battery materials. Accordingly, this work taps into the possibilities of lignin together with chitosan to form gel polymer electrolytes (GPEs) for zinc-ion chemistries. A simple fabrication process enabling free-standing sodium lignosulfonate–chitosan and micellar lignosulfonate–kraft lignin–chitosan GPEs with diameters exceeding 80 mm is developed. The GPEs combine tensile strength with ductility, reaching Young’s moduli of 55 ± 4 to 940 ± 63 MPa and elongations at break of 14.1 ± 0.2 to 43.9 ± 21.1%. Competitive ionic conductivities ranging from 3.8 to 18.6 mS cm–1 and electrochemical stability windows of up to +2.2 V vs Zn2+/Zn were observed. Given the improved interfacial adhesion of the GPEs with metallic Zn promoted by the anionic groups of the lignosulfonate, a stable cycling of the Zn anode is obtained. As a result, GPEs can operate at 5000 μA cm–2 with no short-circuit and Coulombic efficiencies above 99.7%, outperforming conventional separator–liquid electrolyte configurations such as the glass microfiber separator soaked into 2 M ZnSO4 aqueous electrolyte, which short-circuits after 100 μA cm–2. This work demonstrates the potential of underutilized biorefinery side-streams and marine waste as electrolytes in the battery field, opening new alternatives in the sustainable energy storage landscape beyond LIBs.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- lignin
- chitosan
- bioeconomy
- circular economy
- gel polymer electrolyte
- zinc-ion battery (ZIB)
- zinc plating/stripping
Publication and Content Type
- ref (subject category)
- art (subject category)
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