Phosphonitrile based porous organic polymers as effective flame-retardant electrolytes for lithium battery

Developing electrolytes with flame-retardant properties become the critical factor in making high safety lithium batteries. As phosphonitrile-based compounds are a kind of typical flame-retardant materials, herein, taking phosphonitrile-based aldehyde as the basic organic building blocks, two porous...

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Published inPolymer (Guilford) Vol. 311; p. 127504
Main Authors Zhang, Xiaoguang, Cui, Zhe, Wei, Tianqi, Wang, Wei, Wu, Qin, Fu, Yu, Yang, Tao, Wang, Jia-Rui, Li, Hansheng, Wang, Bozhou, Li, Pei-Zhou, Mao, Mingzhen
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 09.10.2024
Subjects
Electrolyte
Flame-retardant
Lithium battery
Phosphonitrile
Porous organic polymers
Lithium battery
Flame-retardant
Electrolyte
Porous organic polymers
Phosphonitrile
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Summary:Developing electrolytes with flame-retardant properties become the critical factor in making high safety lithium batteries. As phosphonitrile-based compounds are a kind of typical flame-retardant materials, herein, taking phosphonitrile-based aldehyde as the basic organic building blocks, two porous organic polymers (POPs) named as PVPH and PVPH-CO2H were successfully fabricated after solvothermal reaction with 1,3-diaminobenzene (MPD) and 5-carboxy-1,3-diaminobenzene (MPD-CO2H), respectively for electrolytes of lithium batteries. Studies revealed that both of the phosphonitrile-based POPs demonstrate good thermal stability and excellent flame-retardant properties, suggesting they are promising flame-retardant electrolytes for the application in battery. Battery performance investigations revealed that both of them, especially PVPH-CO2H, show good performance after assembling them into lithium batteries. This study paves the way to improve battery safety performance by employing the flame-retardant phosphonitrile-based porous polymers as effective electrolytes. Moreover, it also broadens the application of flame-retardant materials in energy storage materials. [Display omitted] •Phosphonitrile based porous organic polymers (POPs) were facilely constructed.•The POPs possesses high thermal stability and excellent flame-retardant property.•The assembled batteries demonstrate they are promising flame-retardant electrolytes.
ISSN:0032-3861
DOI:10.1016/j.polymer.2024.127504