Investigation of lithium carbide contamination in battery grade lithium metal
2012; Elsevier BV; Volume: 217; Linguagem: Inglês
10.1016/j.jpowsour.2012.05.038
ISSN1873-2755
AutoresRené Schmitz, Romek Müller, Steffen Krüger, Raphael Schmitz, Sascha Nowak, Stefano Passerini, Martin Winter, Christian Schreiner,
Tópico(s)Advanced Battery Materials and Technologies
ResumoLithium carbide has been found as possible contamination in high purity lithium metal. Raman spectroscopy clearly shows its presence on the surface as well as in the bulk. Mass spectrometry revealed the formation of acetylene during hydrolization of lithium metal also for the bulk material. The total lithium content of the lithium sample is determined with ICP-OES and the ratio of oxygen to carbon is investigated with EDX for the surface and the bulk. Possible sources of the lithium carbide contamination in battery grade lithium are discussed.
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