Imperial College London
Alternate

Professor Nigel Brandon OBE FREng FRS

Faculty of Engineering

Dean of the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8600n.brandon Website

 
 
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Location

 

2.06Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2023:10.1002/adma.202210098,
author = {Wang, A and Tan, R and Liu, D and Lu, J and Wei, X and Alvarez-Fernandez, A and Ye, C and Breakwell, C and Guldin, S and Kucernak, AR and Jelfs, KE and Brandon, NP and McKeown, NB and Song, Q},
doi = {10.1002/adma.202210098},
journal = {Advanced Materials},
pages = {1--12},
title = {Ion-selective microporous polymer membranes with hydrogen-bond and salt-bridge networks for aqueous organic redox flow batteries},
url = {http://dx.doi.org/10.1002/adma.202210098},
volume = {35},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Redox flow batteries (RFBs) have great potential for long-duration grid-scale energy storage. Ion conducting membranes are a crucial component in RFBs, allowing charge-carrying ions to transport while preventing the cross-mixing of redox couples. Commercial Nafion membranes are widely used in RFBs, but their unsatisfactory ionic and molecular selectivity as well as high costs limit the performance and the widespread deployment of this technology. To extend the longevity and reduce the cost of RFB systems, inexpensive ion-selective membranes are highly desired that concurrently deliver low ionic resistance and high selectivity towards redox-active species. In this work, high-performance RFB membranes are fabricated from blends of carboxylate- and amidoxime-functionalized polymers of intrinsic microporosity (PIMs) that exploit the beneficial properties of both polymers. The enthalpy-driven formation of cohesive interchain interactions, including hydrogen bonds and salt bridges, facilitates the microscopic miscibility of the blends, while ionizable functional groups within the sub-nanometer pores allow optimization of membrane ion transport functions. The resulting microporous membranes demonstrate fast cation conduction with low crossover of redox-active molecular species, enabling improved power ratings and reduced capacity fade in aqueous RFBs using anthraquinone and ferrocyanide as redox couples. This article is protected by copyright. All rights reserved.
AU  - Wang,A
AU  - Tan,R
AU  - Liu,D
AU  - Lu,J
AU  - Wei,X
AU  - Alvarez-Fernandez,A
AU  - Ye,C
AU  - Breakwell,C
AU  - Guldin,S
AU  - Kucernak,AR
AU  - Jelfs,KE
AU  - Brandon,NP
AU  - McKeown,NB
AU  - Song,Q
DO  - 10.1002/adma.202210098
EP  - 12
PY  - 2023///
SN  - 0935-9648
SP  - 1
TI  - Ion-selective microporous polymer membranes with hydrogen-bond and salt-bridge networks for aqueous organic redox flow batteries
T2  - Advanced Materials
UR  - http://dx.doi.org/10.1002/adma.202210098
UR  - https://www.ncbi.nlm.nih.gov/pubmed/36634684
UR  - https://onlinelibrary.wiley.com/doi/10.1002/adma.202210098
UR  - http://hdl.handle.net/10044/1/102073
VL  - 35
ER  -
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