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Issue 13, 2014
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Evaluation of decomposition products of EMImCl·1.5AlCl3 during aluminium electrodeposition with different analytical methods

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Abstract

Ionic liquids are of great importance for electrodeposition of metals, which can't be deposited from aqueous electrolytes due to their negative standard potentials. In this paper non-woven polymers were coated with aluminium by electrodeposition from 1-ethyl-3-methyl-imidazolium chloride and subsequently established as 3D current collectors for lithium-ion batteries. We investigated the long-term stability of the ionic liquid (IL) for electrodeposition of aluminium under process-oriented conditions. The degradation products were analysed by headspace gas chromatography-mass spectrometry, pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) and 1H/13C nuclear magnetic resonance spectroscopy (NMR). The main decomposition products derived from thermal degradation, especially from cleavage of an alkyl chain and were identified as chloromethane, dichloromethane, methylimidazole, ethylimidazole and deprotonated 1-ethyl-3-methylimidazole.

Graphical abstract: Evaluation of decomposition products of EMImCl·1.5AlCl3 during aluminium electrodeposition with different analytical methods

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Article information


Submitted
30 Oct 2013
Accepted
03 Jan 2014
First published
06 Jan 2014

RSC Adv., 2014,4, 6685-6690
Article type
Paper

Evaluation of decomposition products of EMImCl·1.5AlCl3 during aluminium electrodeposition with different analytical methods

S. Poetz, P. Handel, G. Fauler, B. Fuchsbichler, M. Schmuck and S. Koller, RSC Adv., 2014, 4, 6685
DOI: 10.1039/C3RA46249H

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