Enhanced stability of pyridine-containing poly(arylene ether) membranes for vanadium redox flow battery: influence of backbone structure
Year: 2025
Type: article
Abstract: Vanadium redox flow batteries (VRFBs) are emerging as large-scale energy storage devices to solve volatility in the utilization of renewable energy. As key components of VRFBs, membranes still suffer from problems such as high cost, low conductivity, or insufficient stability. Pyridine-containing poly (aryl ether)s have the advantages of low monomer cost, simple synthesis process, and easy processing into membranes. In this work, a series of pyridine-containing poly (aryl ether) (PyPEK, PyPES, and PyPEF) based on different backbones (4,4'-difluorobenzophenone, 4,4'-dichlorodiphenyl sulfone, and perfluorobiphenyl) were synthesized. The effects of the backbones on the membrane swelling behavior, basic membrane properties, battery performance, and stability of the membranes were studied. The PyPEF membrane exhibited excellent battery performance (EE = 93.78% at 80 mAcm -2 , EE = 86.24% at 200 mAcm -2 , and EE = 80.25% at 300 mAcm -2 ) and excellent cycling stability (3000 cycles) in VRFB, which is highly attractive for application in VRFB.
Source: Advanced Membranes
Authors: Yuchao Yang, Bengui Zhang, Qian Liu, Zhenfeng Sun, Chao Yang, Tao Li, Songwei Zhang, Jingjun He, Feixiang Zhai, Zhihan Song, Enlei Zhang, Kangjun Wang
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Funders: National Natural Science Foundation of China, Dalian University of Technology, Natural Science Foundation of Liaoning Province, Department of Education of Liaoning Province, China Petrochemical Corporation, Department of Science and Technology of Liaoning Province, Liaoning Revitalization Talents Program
OpenAlex ID: W4415538337