Journal article

Selective ion transport for a vanadium redox flow battery (VRFB) in nano-crack regulated proton exchange membranes

T Wang, SJ Moon, DS Hwang, H Park, J Lee, Seungju Kim, YM Lee, undefined KimSangil

Journal of Membrane Science | Elsevier BV | Published : 2019


To develop new cost-effective and high performance ion exchange membranes (IEMs) for redox flow battery applications, poly(arylene ether sulfone) random copolymer membranes (BPSHs) with surface nano-crack coatings (P-BPSH) were prepared using a hydrophobic atmospheric plasma treatment. The effect of the nano-cracks on the membranes' ion transport properties and the performance of the vanadium redox flow batteries (VRFBs) were evaluated to better understand the feasibility of using this technique in membrane ionic selectivity. The ion-selective nano-crack surface significantly improved the proton selectivity, from 32.95 to 74.20, over vanadium (VO 2+ ) ions. Consequently, the VRFB cell assemb..

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University of Melbourne Researchers


Awarded by National Science Foundation

Awarded by Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT

Funding Acknowledgements

The work at UIC was supported by a grant from the National Science Foundation (Grant No. CBET-1706910). T. W. acknowledges support from UIC Provost's Graduate Research Award program. Y.M.L. acknowledges financial support from the Technology Development Program to solve climate change through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018M1A2A2061979). S.J.K. acknowledges support for his fellowship as Research Assistant Professor by the World Class Department Program at Hanyang University, a President-funded program of Hanyang University to build a flagship department and develop manpower.