The cover feature demonstrates enhanced performance of sodium-ion capacitors using a bio-based solvent and low-fluorine salt, suggesting a sustainable approach.
The Cover Feature shows a novel electrolyte formulation for application in a dual-carbon sodium-ion capacitor. A special focus was laid on improving the sustainability of the liquid electrolyte. Therefore, a low-fluorine salt, sodium difluoro(oxalato)borate (NaDFOB), was combined with a bio-based solvent, γ-valerolactone (GVL). The novel electrolyte leads to enhanced high-rate performance compared to a reference electrolyte. More information can be found in the Research Article by A. Balducci and co-workers (DOI: 10.1002/cssc.202502493).
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Hainthaler et al. (2026) studied this question.
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