Smart-flame-retarding layered composite Li negative electrode for safe Li metal battery.
basic_science · Level V
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- Record sourced from PubMed, PMID 41888135.
- Also identified by DOI 10.1038/s41467-026-71069-9.
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Abstract
The high flammability problem of Li metal negative electrode has persistently impeded the safe application of energy-dense Li metal batteries. Conventional flame-retardant mixing strategy also fails in addressing this challenge because of the severe function-destroying corrosion reaction between flame retardant and Li metal. In this work, we propose a layered graphene oxide/flame retardant/lithiophilic ZnO layer/Li metal negative electrode for eliminating the corrosion between Li metal and flame retardant, while smartly releasing the thermal-triggered flame-retarding gases for covering and bonding with Li metal against combustion. This smart-flame-retard layered Li negative electrode afford 2677.78% prolonged battery cycle life than the pure Li negative electrode after 600 °C ignition, and 94.68% suppressed side reaction than conventional flame retardant-Li mixture during regular electrode operation. This resolution on the flammability challenge of Li metal negative electrode presents a meaningful advancement for safe Li metal battery construction.