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Towards room temper...
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Sångeland, ChristoferUppsala universitet,Strukturkemi
(författare)
Towards room temperature operation of all-solid-state Na-ion batteries through polyester-polycarbonate-based polymer electrolytes
- Artikel/kapitelEngelska2019
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Elsevier BV,2019
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electronicrdacarrier
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LIBRIS-ID:oai:DiVA.org:uu-387602
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-387602URI
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https://doi.org/10.1016/j.ensm.2019.03.022DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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In an ambition to develop solid-state Na-ion batteries functional at ambient temperature, we here explore a novel electrolyte system. Polyester-polycarbonate (PCL-PTMC) copolymers were combined with sodium bis(fluorosulfonyl) imide salt (NaFSI) to form solid polymer electrolytes for Na-ion batteries. The PCL-PTMC:NaFSI system demonstrated glass transition temperatures ranging from -64 to -11 degrees C, increasing with increasing salt content from 0 to 35 wt%, and ionic conductivities ranging from 10(-8) to 10(-5) S cm(-1) at 25 degrees C. The optimal salt concentration was clearly dependent on the level of crystallinity, which was largely determined by the CL content. At 70 and 80 mol% CL, the PCL-PTMC:NaFSI system was fully amorphous and exhibited high conductivities at lower salt concentrations. When the CL content was increased to 100 mol%, high ionic conductivities were instead observed at high salt concentrations. A decent transference number of ca. 0.5 at 80 degrees C was obtained for a polymer film containing 20 mol% CL units and 25 wt% NaFSI. Finally, a HC vertical bar 80-20(25)vertical bar Na2-xFe(Fe(CN)(6)) all-solid-state polymer electrolyte full cell was assembled to demonstrate the practical application of the material and cycled for more than 120 cycles at similar to 22 degrees C.
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Mindemark, JonasUppsala universitet,Strukturkemi(Swepub:uu)jonmi189
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Brandell, Daniel,1975-Uppsala universitet,Strukturkemi(Swepub:uu)dbr10334
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Uppsala universitetStrukturkemi
(creator_code:org_t)
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Ingår i:Energy Storage Materials: Elsevier BV19, s. 31-382405-82892405-8297
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