• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS Macro Letters >One-Pot Synthesis of Proton Exchange Membranes from Anion Exchange Membrane Precursors
【24h】

One-Pot Synthesis of Proton Exchange Membranes from Anion Exchange Membrane Precursors

机译：阴离子交换膜前体的质子交换膜的单壶合成

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

Proton exchange membranes (PEMs) play a critical role in many electrochemical devices that could solve the shortcomings of current energy storage and conversion systems. Hydrocarbon-based PEMs are an attractive alternative for replacing the state-of-the-art perfluorosulfonic acid PEMs; however, synthetic routes are generally limited to sulfonation of aromatic units (pre- or postpolymerization functionalization). Here we disclose a facile and scalable one-pot synthetic method of converting an alkyl halide functionality to a sulfonate in polymer systems. With this method, sulfonated hydrocarbon PEMs can be conveniently prepared from a precursor polymer of anion exchange membranes which have recently experienced significant advances. Polyphenylene type PEMs (BPSA and m TPSA in this report) were generated in one-pot S_(N)2 reaction of bromoalkyl side chains of polymers followed by oxidation. These PEMs showed excellent proton conductivity with BPSA showing 250 mS/cm in water at 80 °C, nearly 1.5 times higher than that of Nafion 212. Furthermore, the separation of the sulfonic acid group from the rigid backbone with a flexible alkyl chain mitigates excessive water uptake and in-plane swelling ratio of the polymer, despite having a high ion exchange capacity of 2.6 mequiv/g. Oxidative stability was also shown to be superior for hydrocarbon-based PEMs with negligible changes in mass, NMR, and proton conductivity.
机译：None

著录项

  • 来源
    《ACS Macro Letters》 |2020年第10期|共5页
  • 作者

    Michael K. Pagels; Santosh Adhikari; Ramali C. Walgama; Asheesh Singh; Junyoung Han; Dongwon Shin; Chulsung Bae;

  • 作者单位

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

    Department of Chemistry &

    Chemical Biology Rensselaer Polytechnic Institute;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

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