High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells

doi:10.1007/s11426-024-2269-0

IMR OpenIR

	High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells
	Wang, Qian 1; Zhao, Songhao 1; Guo, Yunpeng 1; Wei, Wei 2; Wang, Lele 1; Yang, Jingshuai 1
通讯作者	Yang, Jingshuai(yjs@mail.neu.edu.cn)
	2025-01-02
发表期刊	SCIENCE CHINA-CHEMISTRY
ISSN	1674-7291
页码	13
摘要	This study concentrates on the development of high temperature polymer electrolyte membranes (HT-PEMs), which are essential components for HT-PEM fuel cells (HT-PEMFCs). Although the phosphoric acid (PA)-doped polybenzimidazole (PBI) has been regarded as the successful HT-PEM, this system still suffers from several challenges, including the use of carcinogenic monomers, complex synthesis procedures, and poor solubility in organic solvents. To develop more cost-effective, readily synthesized and high-performance alternatives, this study employs a simply superacid-catalyzed Friedel-Crafts reaction to synthesize a series of poly(triphenyl-co-dibenzo-18-crown-6 pyridine) copolymers, denoted as P(TPx%-co-CEy%), using p-triphenyl, dibenzo-18-crown-6 and 4-acetylpyridine as monomers. The copolymerized hydrophilic and bulky crown ether unites introduce large free volumes and multiple interaction sites with PA molecules, as elucidated by theoretical calculations. Meanwhile microphase separation structures are formed as confirmed by atomic force microscope (AFM), transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). Thus P(TPx%-co-CEy%) membranes exhibit excellent PA absorption and proton conduction abilities. For example, after immersing in 85 wt% PA at 30 degrees C, the P(TP91%-co-CE9%) membrane achieves a PA doping content of 205% and a high conductivity of 0.138 S cm-1 at 180 degrees C, while maintaining a tensile strength of 7.5 MPa at room temperature. Without humidification and backpressure, the peak power density of an H2-O2 cell equipped with P(TP91%-co-CE9%)/205%PA reaches nearly 1200 mW cm-2, representing one of the highest performances reported for PA-doped HT-PEMs to date. This work demonstrates the enormous potential of poly(triphenyl-co-crown ether pyridine) membranes in the HT-PEMFC applications.
关键词	high temperature proton exchange membrane poly(arylene pyridine) crown ether copolymer fuel cell
资助者	Fundamental Research Funds for the Central Universities of China ; Natural Science Foundation of Liaoning Province
DOI	10.1007/s11426-024-2269-0
收录类别	SCI
语种	英语
资助项目	Fundamental Research Funds for the Central Universities of China[N2005026] ; Natural Science Foundation of Liaoning Province[2020-MS-087]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:001390845200001
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180741
专题	中国科学院金属研究所
通讯作者	Yang, Jingshuai
作者单位	1.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qian,Zhao, Songhao,Guo, Yunpeng,et al. High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells[J]. SCIENCE CHINA-CHEMISTRY,2025:13.
APA	Wang, Qian,Zhao, Songhao,Guo, Yunpeng,Wei, Wei,Wang, Lele,&Yang, Jingshuai.(2025).High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells.SCIENCE CHINA-CHEMISTRY,13.
MLA	Wang, Qian,et al."High-performance poly(aromatic pyridine) copolymers with crown ether moieties for high temperature polymer electrolyte membrane fuel cells".SCIENCE CHINA-CHEMISTRY (2025):13.