4.7 Article

Polyoxometalate-polymer nanocomposites with multiplex proton transport channels for high-performance proton exchange membranes

期刊

COMPOSITES SCIENCE AND TECHNOLOGY
卷 232, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2022.109842

关键词

Polyoxometalates; Polymer nanocomposites; Self-assembly; Multiplex ionic channels; Proton exchange membranes

向作者/读者索取更多资源

This study presents a facile strategy to prepare nanostructured polymer composite membranes with multiplex proton transport channels. These membranes exhibit high proton conductivity and modulus, and enhance the performance of direct methanol fuel cells.
Multiplex ion channels play a critical role in life processes and are highly desired for advanced electrolytes due to the synergistic effect on ion transport. However, it is a challenge to integrate different types of proton transport channels in the same membrane system while keeping their intrinsic structural stability. Here, we report a facile strategy for the preparation of nanostructured polymer composite membranes with multiplex proton transport channels based on the supramolecular co-assembly of sulfonated poly(ether-ether-ketone) (SPEEK), poly(ether-ether-ketone)-grafted-poly(vinyl pyrrolidone) (PGP) and polyoxometalate H3PW12O40 (PW). The spherical ionic domains from SPEEK and the bicontinuous ionic domains from the electrostatically assembled PGP/PW components were fabricated in the membranes simultaneously, which co-construct the multiplex channels for proton conduction. The optimized membranes exhibit a high proton conductivity of similar to 130 mS/cm and a high modulus of similar to 4.3 GPa, which are similar to 2.2 and similar to 1.3 times higher than the pristine SPEEK, respectively. Furthermore, the direct methanol fuel cell performance based on these membranes is enhanced by 50.4% compared to SPEEK. This approach can provide a paradigm to design advanced polymer electrolyte membranes with highly efficient ion-conducting channels for energy applications.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据