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Develop a safe, thermally stable, and flame-retardant separator for high-energy-density lithium-ion batteries using a bio-derived organic-inorganic hybrid coating.

August 14, 2026ChemSusChemOpen Access

Bio‐Derived Phytic Acid‐Based Organic‐Inorganic Hybrid Coating for Flame‐Retardant and Thermally Stable Separators for Lithium‐Ion Batteries

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Develop a safe, thermally stable, and flame-retardant separator for high-energy-density lithium-ion batteries using a bio-derived organic-inorganic hybrid coating.
Fabricated an organic-inorganic hybrid coating consisting of boehmite inorganic particles and a cross-linked organic network containing bio-derived phytic acid.
Applied the hybrid coating onto commercial polyethylene (PE) battery separators.
Assessed thermal stability, flame retardancy mechanisms, electrolyte wettability, and electrochemical cycling performance.
Achieved synergistic flame retardancy through gas- and condensed-phase mechanisms, including phosphorus-rich char formation, radical scavenging by phytic acid, and endothermic ceramic barrier formation by boehmite.
Demonstrated marked improvements in separator thermal stability against shrinkage and enhanced electrolyte wettability.
Maintained stable electrochemical performance and long-term cycling stability via interfacial stabilization.

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Implication

Experimental study demonstrates enhanced thermal stability and flame retardancy in coated polyethylene separators, highlighting a bio-derived strategy to prevent battery thermal runaway.

Cite This Study

Won et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec746b70b84ec8b91377e https://doi.org/10.1002/cssc.70960

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Implication

Experimental study demonstrates enhanced thermal stability and flame retardancy in coated polyethylene separators, highlighting a bio-derived strategy to prevent battery thermal runaway.

Bio‐Derived Phytic Acid‐Based Organic‐Inorganic Hybrid Coating for Flame‐Retardant and Thermally Stable Separators for Lithium‐Ion Batteries

Key Points

Discussion

Implication

Cite This Study

Bio‐Derived Phytic Acid‐Based Organic‐Inorganic Hybrid Coating for Flame‐Retardant and Thermally Stable Separators for Lithium‐Ion Batteries

Key Points

Discussion

Implication

Cite This Study

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