首页> 外文期刊>Applied clay science >Silica/montmorillonite nanoarchitectures and layered double hydroxide- SPEEK based composite membranes for fuel cells applications
【24h】

Silica/montmorillonite nanoarchitectures and layered double hydroxide- SPEEK based composite membranes for fuel cells applications

机译:二氧化硅/蒙脱石纳米体建筑和层状双氢氧化物基于燃料电池应用的复合膜

获取原文
获取原文并翻译 | 示例
           

摘要

Anionic and cationic clays were here evaluated as nanofillers of low sulfonated polyetheretherketone (SPEEK, DS = 56%) for preparation of nanocomposite electrolyte membranes for PEMFC (Proton Exchange Membrane Fuel Cells) applications. A synthetic Mg-Al layered double hydroxide (LDH) exchanged with sulfate anions and a porous SiO2-montmorillonite heterostructured material containing delaminated clay particles, were added to SPEEK polymer for preparation of composite membranes with different nanofiller content (3, 6 and 9%). The resulting membranes were characterized concerning their structure, morphology and electrical conductivity performance. The incorporation of the Mg-Al LDH and the SiO2-motmorillonite fillers into the SPEEK seems to enhance water retention and the thermal stability of the resulting composite electrolyte membranes. Moreover, the composite electrolyte membranes show higher proton conductivity than the neat SPEEK membrane (0.023 S cm(-1)) after incorporation of the LDH and the SiO2-motmorillonite fillers (0.070 and 0.158 S cm(-1) respectively) at 120 degrees C and 100% relative humidity, which can be relevant for increasing the performance at high temperature of this type of membranes in fuel cell applications.
机译:本发明的阴离子和阳离子粘土被评估为低磺化聚醚醚酮(Speek,DS = 56%)的纳米填料,用于制备用于PeMFC(质子交换膜燃料电池)应用的纳米复合电解质膜。与硫酸根阴离子交换的合成Mg-Al层状双氢氧化物(LDH)和含有分层粘土颗粒的多孔SiO2-蒙脱石异质化材料加入到Speek聚合物中,以制备具有不同纳米填充物含量(3,6和9%)的复合膜。所得膜的特征在于它们的结构,形态和导电性能。将Mg-Al LDH和SiO 2 - Motmorillonite填料的掺入似乎增强了所得复合电解质膜的水保持和热稳定性。此外,复合电解质膜显示出LDH和SiO 2 - Motmorilililonite填料(分别为0.070和0.070和0.158厘米(-1)以120度的纯净的Speek膜(0.023秒(-1))的质子电导率更高C和100%相对湿度,这对于在燃料电池应用中增加这种类型的膜的高温下的性能相关。

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