High durable SPEEK/TiO2 nanopaper composite membrane for vanadium redox flow battery
Year: 2024
Type: article
Abstract: Sulfonated poly (ether ether ketone) (SPEEK) ion exchange membranes for VRFB are promising alternatives to Nafion, but require improved mechanical and chemical stability for long-term operation. Here, we have fabricated composite membranes using SPEEK as proton conductive medium and TiO 2 nanopapers as reinforcing framework to improve the mechanical and chemical stabilities of SPEEK membranes. The SPEEK/TiO 2 nanopaper composite membranes exhibited almost twice the tensile strength and only one-third the vanadium ion permeability compared to pristine SPEEK (DS=60 %). Due to the excellent cell performance such as high EE, slow capacity degradation and long-term lifetime, these high durable composite membranes could be found their potential use as ion exchange membranes for commercial VRFBs.
Authors: Song Il Han, Song Hyok Jon, Song Hyok Jon, Un Hyang Kim, Gang Hyok Kim, Sang Mo Jon, Sang Mo Jon
Institution: Kim Chaek University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $1,490
OpenAlex ID: W4402290604