1. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; Division of Chemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan 2. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1Asahidai, Nomi, Ishikawa 923-1292, Japan; Surface Science Laboratory, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku Nagoya 468-8511, Japan 3. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; Centre for Fuel Cell Technology, International Advanced Research Center for Powder Metallurgy and New Materials, Chennai, India 4. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
Flame-retardant properties of in situ sol-gel synthesized inorganic borosilicate/silicate polymer scaffold matrix comprising ionic liquid
Kumar Sai SMARAN1, Rajashekar BADAM2, Raman VEDARAJAN3(), Noriyoshi MATSUMI4
1. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; Division of Chemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan 2. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1Asahidai, Nomi, Ishikawa 923-1292, Japan; Surface Science Laboratory, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku Nagoya 468-8511, Japan 3. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan; Centre for Fuel Cell Technology, International Advanced Research Center for Powder Metallurgy and New Materials, Chennai, India 4. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
本文重点研究了有机 - 无机杂化离子 - 凝胶电解质的火焰敏感性相对于商用电解质（如1 M LiPF6溶于1：1的碳酸亚乙酯（EC）：碳酸二甲酯（DMC）{1 M LiPF6-EC：DMC}）在锂离子电池运用中的优越性。这些离子凝胶电解质中含有离子液体单体，这些单体被限制在理想的非可燃基质中，如硼硅酸盐或硅酸盐基质。明火实验证实了有机无机杂化电解质对火焰的敏感度较低，这些电解质在遭遇火焰时的重量损失较小。此外，杂化电解质还可以自行熄灭。因此，与其他商用锂离子电池电解质不同，这些杂化电解质仅在接触到明火时才会被氧化。差示扫描量热研究的补充分析表明，在温度达到100 ℃之前，杂化电解质都是玻璃态，这与先前发表的有机-无机杂化电解质得出的数据相一致。
Abstract：
This paper focuses on the superiority of organic-inorganic hybrid ion-gel electrolytes for lithium-ion batteries (LiBs) over commercial electrolytes, such as 1 M LiPF6 in 1:1 ethylene carbonate (EC): dimethyl carbonate (DMC) {1 M LiPF6-EC: DMC}, in terms of their flame susceptibility. These ion-gel electrolytes possess ionic liquid monomers, which are confined within the borosilicate or silicate matrices that are ideal for non-flammability. Naked flame tests confirm that the organic-inorganic hybrid electrolytes are less susceptible to flames, and these electrolytes do not suffer from a major loss in terms of weight. In addition, the hybrids are self-extinguishable. Therefore, these hybrids are only oxidized when subjected to a flame unlike other commercial electrolytes used in lithium-ion batteries. Supplementary analyses using differential scanning calorimetric studies reveal that the hybrids are glassy until the temperature reaches more than 100°C. The current results are consistent with previously published data on the organic-inorganic hybrids.
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