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June 21, 2026Nature CommunicationsOpen Access

Enabling high-voltage aqueous dual-ion batteries capable of working at −40 °C in a low-concentration salt electrolyte

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Authors

CLChuan LiXMXintao MaDLDedi Li

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Overview

Randomized trial evaluates performance of high-voltage batteries in low-concentration salt electrolytes, indicating improved efficiency at low temperatures.

Key Points

  • This research aims to enhance the performance of aqueous dual-ion batteries by enabling operation at low temperatures with a novel electrolyte.
  • Explored a hydrogel electrolyte containing 1 M lithium bis(trifluoromethanesulfonyl)imine and 2 M zinc chloride.
  • Investigated electrochemical stability and discharge performance at −20 °C and −40 °C.
  • Utilized bis(trifluoromethanesulfonyl)imide anion intercalation in a graphite-based positive electrode.
  • Achieved high discharge plateaus of 1.9 V at −20 °C and 1.7 V at −40 °C.
  • Demonstrated a specific energy of 595 Wh kg−1 for the batteries.
  • Showed expanded electrochemical stability windows of >4.6 V at −40 °C.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a377f3a24f042ddf4c59e08https://doi.org/10.1038/s41467-026-74628-2
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