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Issue 45, 2015
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Synthesis and characterization of TEMPO- and viologen-polymers for water-based redox-flow batteries

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Abstract

Redox-flow batteries that employ redox-active polymers (pRFB) represent a novel energy storage technology requiring innovative materials. Polymers bearing a viologen unit (N,N′-dialkyl-4,4′-bipyridines) or a TEMPO radical are synthesized. Acrylamide, poly(ethyleneglycol) methyl acrylates, di(ethylene glycol) methacrylate and 2-(methacryloyloxy)-N,N,N-trimethylethane ammonium chloride are studied as water-solubility-enhancing comonomers. The rheological and electrochemical properties of these polymers in aqueous solutions are evaluated, revealing poly(1-methyl-1′-(4-vinylbenzyl)-[4,4′-bipyridine]-1,1′-diium dichloride) (P2a) and poly(4-methacryloyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl-co-2-(methacryloyloxy)-N,N,N-trimethylethane ammonium chloride) (P4e) to be most suited as anode and cathode materials, respectively, for a pRFB.

Graphical abstract: Synthesis and characterization of TEMPO- and viologen-polymers for water-based redox-flow batteries

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Article information


Submitted
05 Oct 2015
Accepted
09 Oct 2015
First published
13 Oct 2015

Polym. Chem., 2015,6, 7801-7811
Article type
Paper

Synthesis and characterization of TEMPO- and viologen-polymers for water-based redox-flow batteries

T. Janoschka, S. Morgenstern, H. Hiller, C. Friebe, K. Wolkersdörfer, B. Häupler, M. D. Hager and U. S. Schubert, Polym. Chem., 2015, 6, 7801
DOI: 10.1039/C5PY01602A

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