The Impact of Dual‐Salt Electrolyte with Low Fluorine Content on the Performance of Layered Transition Metal Oxides for Sodium‐Ion Batteries

In this work, the characterization of novel electrolytes based on the combination of propylene carbonate (PC) solvent with sodium bis(fluorosulfonyl)imide (NaFSI) and sodium difluoro(oxalato)borate (NaDFOB), as well as their application in sodium-ion batteries (SIBs) is presented. The results show that dual-salt electrolytes have a wide electrochemical stability window, excellent transport properties, and mostly suppress anodic dissolution. When combined with P2-Na<sub>2/3</sub>Al<sub>1/9</sub>Fe<sub>1/9</sub>Mn<sub>2/3</sub>Ni<sub>1/9</sub>O<sub>2 </sub>(P2-AFMNO) cathode electrode for SIBs operating at 4.3 V vs Na<sup>+</sup>/Na, they enable high performance and stability. XPS investigation revealed that this performance is related to the formation of a thin and homogeneous cathode electrolyte interphase (CEI) at the electrode surface.

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Publication Details

Journal
Small
Published
2025-05-08
DOI
https://doi.org/10.1002/smll.202410704
Citations
3
Primary Topic
Advancements in Battery Materials
Type
article
Field-Weighted Citation Impact
2.19

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article

The Impact of Dual‐Salt Electrolyte with Low Fluorine Content on the Performance of Layered Transition Metal Oxides for Sodium‐Ion Batteries

Maider Zarrabeitia, Andrea Balducci, Philipp Adelhelm, M. Aslam et al.
3 citations
Small
Advancements in Battery Materials
2.19
article

The Impact of Dual‐Salt Electrolyte with Low Fluorine Content on the Performance of Layered Transition Metal Oxides for Sodium‐Ion Batteries

Maider Zarrabeitia, Andrea Balducci, Philipp Adelhelm, M. Aslam, Lukas Fridolin Pfeiffer, Peter Axmann, Jonas Geisler, Ludovica Roselli, Christian Leibing, Yiyue Lu
article en
3 citations

Abstract

In this work, the characterization of novel electrolytes based on the combination of propylene carbonate (PC) solvent with sodium bis(fluorosulfonyl)imide (NaFSI) and sodium difluoro(oxalato)borate (NaDFOB), as well as their application in sodium-ion batteries (SIBs) is presented. The results show that dual-salt electrolytes have a wide electrochemical stability window, excellent transport properties, and mostly suppress anodic dissolution. When combined with P2-Na<sub>2/3</sub>Al<sub>1/9</sub>Fe<sub>1/9</sub>Mn<sub>2/3</sub>Ni<sub>1/9</sub>O<sub>2 </sub>(P2-AFMNO) cathode electrode for SIBs operating at 4.3 V vs Na<sup>+</sup>/Na, they enable high performance and stability. XPS investigation revealed that this performance is related to the formation of a thin and homogeneous cathode electrolyte interphase (CEI) at the electrode surface.

SmallVol. 22(12)
Karlsruhe Institute of Technology (DE), Helmholtz-Zentrum Berlin für Materialien und Energie (DE), Humboldt-Universität zu Berlin (DE), Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (DE), Helmholtz-Institute Ulm (DE), Friedrich Schiller University Jena (DE)
Friedrich-Schiller-Universität Jena, Bundesministerium für Bildung und Forschung
Openalex Percentile: Top 12%
Advancements in Battery Materials
2.19
DOIOpen Access PDFOpenAlex
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