静电纺丝制备POSS-PMMA_8改性锂离子电池凝胶聚合物电解质隔膜
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- 英文论文题名：Preparation of Separators Modified with POSS-PMMA_8 Hybrid Composite for Lithium Battery by Electrospinning
- 论文作者：孙坤 ; 马晓燕 ; 张帆 ; 陈芳 ; 张杰 ; 管兴华
- 英文论文作者：Kun Sun ; Xiaoyan Ma ; Fan Zhang ; Fang Chen ; Jie Zhang ; Xinghuan Guan ; The Key Laboratory of Polymer Science and Technology ; School of Science ; Northwestern Polytechnical University
- 年：2016
- 作者机构：西北工业大学理学院和陕西省高分子科学与技术重点实验室;
- 论文关键词：电解质 ; 隔膜 ; 静电纺丝 ; POSS星型聚合物 ; 电导率
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：TQ340.64;TQ317
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：306k
- 原文格式：D
- 会议级别：全国
摘要
为获得离子传输性能、机械性能优异的凝胶聚合物电解质隔膜,以成膜性好、有利于离子传导的星型杂化聚合物笼型倍半硅氧烷(POSS)-聚甲基丙烯酸甲酯(POSS-PMMA8)作为改性剂~([1]),通过静电纺丝制备POSS-PMMA8改性PAN/PVDF/PMMA(质量比2:2:1)的多孔凝胶聚合物电解质隔膜,得到改性膜M1;分别通过热处理和热压结合热处理~([2])两种方式对改性膜M1进行后处理。结果发现,相比于PAN/PVDF/PMMA三元体系纺丝膜(M0),POSS-PMMA8的加入可提高隔膜的电导率和拉伸强度,但膜韧性下降;120℃热处理改性膜(M1)2 h所得膜M2的电导率为41.6 mS/cm,但其断裂伸长率仅为M0的41.7%;110℃热压30 min后再于230℃热处理改性膜2 h所得膜M3的电导率为17.8 mS/cm,且机械性能大幅提高,拉伸强度和断裂伸长率分别较M0增长4.55和2.71倍。
Porous polymer separator M0 composed of PAN/PVDF/PMMA with weight ratio of 2:2:1 was prepared by electrospinning. For further improvement of electrochemical and mechanical properties of the separator, star-shaped POSS-polymethacrylate(POSS-PMMA8) was introduced into the PAN/PVDF/PMMA to prepare electrospun membrane M1. And the M1 was operated at 120 ℃ for 2 hours to get M2, or treated by hot pressing at 110 ℃ for 30 minutes and heated at 230 ℃ for 2 hours to be M3, subsequently. The resulted M1 and M2 was too brittle although the conductivity was 14.8 and 41.6 mS /cm respectively, higher than M0, while tensile strength and elongation at break of M3 were 4.55 and 2.71 times respectively of M0 with conductivity of 17.8 mS /cm.
Porous polymer separator M0 composed of PAN/PVDF/PMMA with weight ratio of 2:2:1 was prepared by electrospinning. For further improvement of electrochemical and mechanical properties of the separator, star-shaped POSS-polymethacrylate(POSS-PMMA8) was introduced into the PAN/PVDF/PMMA to prepare electrospun membrane M1. And the M1 was operated at 120 ℃ for 2 hours to get M2, or treated by hot pressing at 110 ℃ for 30 minutes and heated at 230 ℃ for 2 hours to be M3, subsequently. The resulted M1 and M2 was too brittle although the conductivity was 14.8 and 41.6 mS /cm respectively, higher than M0, while tensile strength and elongation at break of M3 were 4.55 and 2.71 times respectively of M0 with conductivity of 17.8 mS /cm.
引文
[1]张帆;管兴华;马晓燕;陈芳;屈枫锦.高分子学报.2015,(7):852.
[2]Lee,JH.;Manuel,J.;Choi,H.;Park,WH.;Ahn,J-H.Polymer.2015,68:335.
[2]Lee,JH.;Manuel,J.;Choi,H.;Park,WH.;Ahn,J-H.Polymer.2015,68:335.