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Novel high phosphorus content phosphaphenanthrene-based efficient flame retardant additives for lithium-ion battery

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Abstract

The novel phosphate derivatives of phosphaphenanthrene with high-density phosphorus were synthesized and used as flame retardant additives for Li-ion batteries. The structures of compounds were characterized by 1H NMR, 13C NMR, 31P NMR, FT-IR, and HR-MS. The excellent thermal stability of compounds was ascertained by thermogravimetric analysis and differential scanning calorimetry. The compounds were added to conventional electrolytes as flame retardant additives and evaluated their ionic conductivity, electrochemical stability, self-extinguishing properties, and combustion performance. The results showed that the compound containing higher phosphorus content has efficient flame retardant properties.

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Acknowledgements

The authors would like to thank the National Natural Science Foundation Committee of China for financial support to this work (No. 20732004).

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Correspondence to Jinyun Zheng or Xiangming Feng.

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Zheng, J., Li, X., Yu, Y. et al. Novel high phosphorus content phosphaphenanthrene-based efficient flame retardant additives for lithium-ion battery. J Therm Anal Calorim 117, 319–324 (2014). https://doi.org/10.1007/s10973-014-3679-5

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  • DOI: https://doi.org/10.1007/s10973-014-3679-5

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