...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Enhancement of ion dynamics in organic ionic plastic crystal/PVDF composite electrolytes prepared by co-electrospinning
【24h】

Enhancement of ion dynamics in organic ionic plastic crystal/PVDF composite electrolytes prepared by co-electrospinning

机译：通过共电纺丝制备的有机离子塑料晶体/ PVDF复合电解质中离子动力学的增强

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Electrospun fibers are widely used in composite material design and fabrication due to their high aspect ratio, high surface area and favorable mechanical properties. In this report, novel organic ionic plastic crystal (OIPC) modified poly(vinylidene difluoride) (PVDF) composite fiber membranes were prepared by electrospinning. These composite materials are of interest for application as solid electrolytes in devices including lithium and sodium batteries. The influence of the OIPC, N-ethyl-N-methylpyrrolidinium tetrafluoroborate [C(2)mpyr][BF4], on the morphology and phase behavior of the composite fibers was investigated by scanning electron microscopy and Fourier transform infrared spectroscopy. Compared with pure electrospun PVDF fibers, which have an electroactive beta phase and a small amount of non-polar alpha phase, the ion-dipole interaction between OIPC and the polymer in the co-electrospun composite system can reduce the non-polar alpha phase PVDF, resulting in almost entirely electroactive beta phase PVDF. Differential scanning calorimetry shows that the ion-dipole interaction between the OIPC and PVDF can also interrupt the crystalline structure of the OIPC. Solid state NMR analysis also reveals different molecular dynamics of the [C(2)mpyr][BF4] in co-electrospun fibers compared with pure OIPC. Thus, electrospun [(C)2mpyr][BF4]/PVDF composite fibers that combine both increased ionic conductivity and almost pure beta phase PVDF are demonstrated.
机译：电纺纤维因其高长宽比，高表面积和良好的机械性能而广泛用于复合材料的设计和制造。在此报告中，通过静电纺丝制备了新型有机离子塑料晶体（OIPC）改性的聚偏二氟乙烯（PVDF）复合纤维膜。这些复合材料作为固体电解质在包括锂和钠电池的装置中的应用是令人感兴趣的。通过扫描电子显微镜和傅里叶变换红外光谱研究了OIPC，N-乙基-N-甲基吡咯烷鎓四氟硼酸盐[C（2）mpyr] [BF4]对复合纤维的形态和相行为的影响。与具有电活性β相和少量非极性α相的纯电纺PVDF纤维相比，共电纺复合体系中OIPC和聚合物之间的离子-偶极相互作用可以减少非极性α相PVDF ，几乎可以产生完全电活性的β相PVDF。差示扫描量热法显示，OIPC和PVDF之间的离子-偶极相互作用也可以中断OIPC的晶体结构。固态NMR分析还揭示了与纯OIPC相比，共电纺丝纤维中[C（2）mpyr] [BF4]的不同分子动力学。因此，证明了电纺[（C）2mpyr] [BF4] / PVDF复合纤维，该纤维结合了增加的离子电导率和几乎纯的β相PVDF。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号