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Conducting polymer paper-derived separators for lithium metal batteries
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, Inorganic Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0002-5342-3686
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
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2018 (English)In: Energy Storage Materials, ISSN 2405-8297, Vol. 13, p. 283-292Article in journal (Refereed) Published
Abstract [en]

Overoxidised polypyrrole (PPy) paper has been employed as a mesoporous separator for lithium metal batteries (LMBs) based on its narrow pore size distribution, good thermal stability, high ionic conductivity (1.1 mS cm−1 with a LP40 electrolyte) and high electrolyte wettability. The overoxidised PPy paper was produced from a PPy/cellulose composite using a combined base and heat-treatment process, yielding a highly interrupted pyrrole molecular structure including N-containing polar groups maintaining the readily adaptable mesoporous structure of the pristine PPy paper. This well-defined pore structure gave rise to a homogeneous current distribution which significantly increased the performance of a LiFePO4|Li cell. With the overoxidised PPy separator, a symmetric Li|Li cell could be cycled reversibly for more than 600 h without any short-circuits in a LP40 electrolyte. This approach facilitates the manufacturing of well-defined separators for fundamental investigations of the influence of the separator structure on the performance of LMBs.

Place, publisher, year, edition, pages
2018. Vol. 13, p. 283-292
Keywords [en]
Conducting polymers, nanocellulose, separator, porosity, lithium metal, batteries
National Category
Inorganic Chemistry Engineering and Technology
Research subject
Chemistry with specialization in Inorganic Chemistry; Chemistry with specialization in Materials Chemistry; Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-355543DOI: 10.1016/j.ensm.2018.02.006ISI: 000436924800033OAI: oai:DiVA.org:uu-355543DiVA, id: diva2:1229579
Funder
Swedish Energy Agency, TriLiSwedish Foundation for Strategic Research , RMA-110012Carl Tryggers foundation StandUpAvailable from: 2018-07-01 Created: 2018-07-01 Last updated: 2018-09-13Bibliographically approved

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Wang, ZhaohuiPan, RuijunXu, ChaoRuan, ChangqingEdström, Kristina

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Wang, ZhaohuiPan, RuijunXu, ChaoRuan, ChangqingEdström, KristinaStrømme, MariaNyholm, Leif
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