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This research aims to improve the operability and recyclability of lithium metal batteries through electrolyte design.

March 14, 2026Science AdvancesOpen Access

A persistent-range hydrogen-bonded gel polymer electrolyte enabling wide-temperature and recyclable lithium metal batteries

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New electrolyte design improves energy density and cycling stability in lithium metal batteries, suggesting enhanced operability and recyclability.

This research aims to improve the operability and recyclability of lithium metal batteries through electrolyte design.
Introduced a persistent-range hydrogen-bonded gel polymer electrolyte.
Constructed using continuous hydrogen-bonding interactions between perfluorinated branches and ─NH─ groups on fluorinated polyurethane backbones.
Evaluated ionic conductivity and thermal stability across a wide temperature range.
The PHB gel polymer electrolyte achieved ionic conductivity of 8.6 mS cm-1.
Li-metal pouch cells exhibited stable cycling performance from -60°C to 100°C.
The electrolyte showed potential for recyclability, allowing reuse of Li salt and polymer.

Shi et al. (2026) studied this question.

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New electrolyte design improves energy density and cycling stability in lithium metal batteries, suggesting enhanced operability and recyclability.