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Spectroscopic characterization of lithium combustion

Published online by Cambridge University Press:  14 March 2014

Andreas Brockhinke ,
Julia Koppmann ,
Regina Brockhinke ,
Renate Kellermann ,
Helmut Eckert ,
Dan Taroata  and
Guenter Schmid
Andreas Brockhinke
Affiliation:
Physical Chemistry I, Bielefeld University, Bielefeld, Germany
Julia Koppmann
Affiliation:
Physical Chemistry I, Bielefeld University, Bielefeld, Germany
Regina Brockhinke
Affiliation:
Physical Chemistry I, Bielefeld University, Bielefeld, Germany
Renate Kellermann
Affiliation:
Siemens AG, Corporate Technology – Materials for Imaging and Energy Conversion, Erlangen, Germany
Helmut Eckert
Affiliation:
Siemens AG, Corporate Technology – Materials for Imaging and Energy Conversion, Erlangen, Germany
Dan Taroata
Affiliation:
Siemens AG, Corporate Technology – Materials for Imaging and Energy Conversion, Erlangen, Germany
Guenter Schmid
Affiliation:
Siemens AG, Corporate Technology – Materials for Imaging and Energy Conversion, Erlangen, Germany
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Abstract

In this work, the exothermic reaction of the chemical energy storage material for stranded renewable energy, lithium is analyzed in carbon dioxide (CO2) and air. Spectroscopic techniques were used to characterize the reaction of bulk lithium pellets of up to 1 g weight. In comparison, power plant applicable combustion of atomized lithium spray was analyzed.

Electrical high voltage spark was used to overcome to activation energy of the combustion for the experiments with bulk lithium. The lithium spray was successfully ignited by pre-heating the reaction gases (air and CO2).

Radiation temperature of the bulk lithium during reaction in air was calculated to 2260 K. The observed green and red emission of the lithium combustion could be demonstrated in the spectral analysis.

In CO2 atmosphere the reaction products were found to be lithium carbonate with little lithium oxide. Beside, lithium carbide could be detected in the reaction product of the combustion of bulk lithium. The gaseous reaction product carbon monoxide (CO), which could be further converted with hydrogen from renewable sources to valuable methanol or gasoline, was detected online by gas analysis.

Keywords

Lienergy storagechemical reaction
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1644: Symposium DD – Materials and Technologies for Grid-Scale Energy Storage , 2014 , mrsf13-1644-dd08-09
Copyright
Copyright © Materials Research Society 2014 

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References

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