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Lightweight, Thin, and Flexible Silver Nanopaper Electrodes for High-Capacity Dendrite-Free Sodium Metal Anodes
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Inorganic Chemistry.ORCID iD: 0000-0001-6118-0226
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0003-4440-2952
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2018 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 28, no 48, article id 1804038Article in journal (Refereed) Published
Abstract [en]

Owing to its resource-abundant and favorable theoretical capacity, sodium metal is regarded as a promising anode material for sodium metal batteries. However, uncontrolled Na plating/stripping, including Na dendrite growth during cycling, has hindered its practical application. Herein, a sodiophilic, thin, and flexible silver nanopaper (AgNP) is designed based on interpenetrated nanocellulose and silver nanowires and is used as a dendrite-free Na metal electrode. Due to a network of highly conducting silver nanowire (0.6 Ω sq?1, 8200 S cm?1), the sodiophilic nature of silver, and the reduced internal strain within the flexible AgNP, a compact Na metal layer can be uniformly deposited on and reversibly stripped from the AgNP electrode without any observations of Na dendrites during cycling at 1 mA cm?2 for 800 h. As the AgNP electrode is only 2 µm thick, with a low mass loading of 0.88 mg cm?2, the AgNP?Na anode deposited with a Na deposition charge of 6 mAh cm?2 exhibits a capacity of 995 mAh g?1AgNP?Na, approaching that of a Na metal anode (1166 mAh g?1Na). The present approach provides new possibilities for the development of lightweight and stable metal batteries.

Place, publisher, year, edition, pages
Wiley-Blackwell , 2018. Vol. 28, no 48, article id 1804038
Keywords [en]
dendrite-free electrodes, flexible electrodes, silver nanowires, sodiophilc, sodium metal anodes
National Category
Nano Technology Materials Chemistry
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-364853DOI: 10.1002/adfm.201804038ISI: 000451118800003OAI: oai:DiVA.org:uu-364853DiVA, id: diva2:1260776
Funder
Swedish Energy AgencyStandUpAvailable from: 2018-11-05 Created: 2018-11-05 Last updated: 2019-01-25Bibliographically approved

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Wang, ZhaohuiZhang, XiaoliangZhou, ShengyangEdström, KristinaNyholm, Leif

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Wang, ZhaohuiZhang, XiaoliangZhou, ShengyangEdström, KristinaStrömme, MariaNyholm, Leif
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