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<p>Perfluorinated hexanone (PMP) has been widely adopted as a fire-extinguishing agent for lithium-ion batteries in new energy vehicles, energy storage power stations, and other applications. PMP exhibits characteristics such as a low boiling point, high heat absorption during vaporization, and excellent insulating properties, enabling it to effectively mitigate thermal safety issues in lithium-ion systems. However, it is prone to decomposition during storage and use, which can cause corrosion of various metallic materials. This corrosion can affect metal components within lithium-ion batteries, battery enclosures, or energy storage facilities, leading to secondary disasters. To thoroughly investigate PMP’s corrosion effects on metals, this study examined its decomposition conditions and its corrosive impact on copper, iron, aluminum, and tin foils. Analysis techniques, including scanning electron microscopy, infrared spectroscopy, and gas chromatography-mass spectrometry, were employed to characterize the corrosion products on these four metals exposed to PMP, and the underlying reaction mechanisms were investigated. This research provides a scientific basis for standardizing the safe storage and use of PMP in environments containing metals, thereby preventing secondary disasters.</p>

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Study on the Corrosion Safety of Perfluorinated Hexanone, a Lithium-Ion Battery Fire Suppressant, on Metals Under Micro-water Conditions

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Wei Liu,
  • Fusheng Zhao,
  • Songfeng Yin

摘要

Perfluorinated hexanone (PMP) has been widely adopted as a fire-extinguishing agent for lithium-ion batteries in new energy vehicles, energy storage power stations, and other applications. PMP exhibits characteristics such as a low boiling point, high heat absorption during vaporization, and excellent insulating properties, enabling it to effectively mitigate thermal safety issues in lithium-ion systems. However, it is prone to decomposition during storage and use, which can cause corrosion of various metallic materials. This corrosion can affect metal components within lithium-ion batteries, battery enclosures, or energy storage facilities, leading to secondary disasters. To thoroughly investigate PMP’s corrosion effects on metals, this study examined its decomposition conditions and its corrosive impact on copper, iron, aluminum, and tin foils. Analysis techniques, including scanning electron microscopy, infrared spectroscopy, and gas chromatography-mass spectrometry, were employed to characterize the corrosion products on these four metals exposed to PMP, and the underlying reaction mechanisms were investigated. This research provides a scientific basis for standardizing the safe storage and use of PMP in environments containing metals, thereby preventing secondary disasters.