--- _id: '7291' abstract: - lang: eng text: Na battery chemistries show poor passivation behavior of low voltage Na storage compounds and Na metal with organic carbonate‐based electrolytes adopted from Li‐ion batteries. Therefore, a suitable electrolyte remains a major challenge for establishing Na batteries. Here we report highly concentrated sodium bis(fluorosulfonyl)imide (NaFSI) in dimethoxyethane (DME) electrolytes and investigate them for Na metal and hard carbon anodes and intercalation cathodes. For a DME/NaFSI ratio of 2, a stable passivation of anode materials was found owing to the formation of a stable solid electrolyte interface, which was characterized spectroscopically. This permitted non‐dentritic Na metal cycling with approximately 98 % coulombic efficiency as shown for up to 300 cycles. The NaFSI/DME electrolyte may enable Na‐metal anodes and allows for more reliable assessment of electrode materials in Na‐ion half‐cells, as is demonstrated by comparing half‐cell cycling of hard carbon anodes and Na3V2(PO4)3 cathodes with a widely used carbonate and the NaFSI/DME electrolyte. article_processing_charge: No article_type: original author: - first_name: Lukas full_name: Schafzahl, Lukas last_name: Schafzahl - first_name: Ilie full_name: Hanzu, Ilie last_name: Hanzu - first_name: Martin full_name: Wilkening, Martin last_name: Wilkening - first_name: Stefan Alexander full_name: Freunberger, Stefan Alexander id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425 last_name: Freunberger orcid: 0000-0003-2902-5319 citation: ama: Schafzahl L, Hanzu I, Wilkening M, Freunberger SA. An electrolyte for reversible cycling of sodium metal and intercalation compounds. ChemSusChem. 2017;10(2):401-408. doi:10.1002/cssc.201601222 apa: Schafzahl, L., Hanzu, I., Wilkening, M., & Freunberger, S. A. (2017). An electrolyte for reversible cycling of sodium metal and intercalation compounds. ChemSusChem. Wiley. https://doi.org/10.1002/cssc.201601222 chicago: Schafzahl, Lukas, Ilie Hanzu, Martin Wilkening, and Stefan Alexander Freunberger. “An Electrolyte for Reversible Cycling of Sodium Metal and Intercalation Compounds.” ChemSusChem. Wiley, 2017. https://doi.org/10.1002/cssc.201601222. ieee: L. Schafzahl, I. Hanzu, M. Wilkening, and S. A. Freunberger, “An electrolyte for reversible cycling of sodium metal and intercalation compounds,” ChemSusChem, vol. 10, no. 2. Wiley, pp. 401–408, 2017. ista: Schafzahl L, Hanzu I, Wilkening M, Freunberger SA. 2017. An electrolyte for reversible cycling of sodium metal and intercalation compounds. ChemSusChem. 10(2), 401–408. mla: Schafzahl, Lukas, et al. “An Electrolyte for Reversible Cycling of Sodium Metal and Intercalation Compounds.” ChemSusChem, vol. 10, no. 2, Wiley, 2017, pp. 401–08, doi:10.1002/cssc.201601222. short: L. Schafzahl, I. Hanzu, M. Wilkening, S.A. Freunberger, ChemSusChem 10 (2017) 401–408. date_created: 2020-01-15T12:15:29Z date_published: 2017-01-20T00:00:00Z date_updated: 2021-01-12T08:12:48Z day: '20' doi: 10.1002/cssc.201601222 extern: '1' intvolume: ' 10' issue: '2' language: - iso: eng month: '01' oa_version: None page: 401-408 publication: ChemSusChem publication_identifier: issn: - 1864-5631 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: An electrolyte for reversible cycling of sodium metal and intercalation compounds type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10 year: '2017' ...