Investigation of the phase relations in Cu-Li-Sn and the binary constituent systems

Activity: Talks and presentationsPoster presentationScience to Science

Description

Our experimental investigations are considered as a contribution to the priority program 1473 “WeNDeLIB”. The goal is the generation of basic thermodynamic data of alloy systems, relevant for lithium ion battery anode materials. Intermetallic systems, which are able to reversibly uptake lithium, are in discussion as an alternative to the commonly used carbon anodes. Multiphase ternary alloys with selective activity of a certain phase towards lithium exchange promise to overcome the well-known problem of electrode destruction due to large volume changes in the cycling process. The challenging experimental handling of lithium and its alloys caused a scarce knowledge of the thermodynamics of these systems, especially of the ternaries. In the scope of a systematic design of new materials for LIBs, these thermodynamic data are indispensable. One promising candidate for new anode materials is the Cu-Li-Sn system. In order to verify our experimental methods and to prove the existing literature date, also the binary systems Cu-Sn, Li-Sn and Cu-Li were investigated. Experimental methods applied have been: XRD, thermal analysis and metallography. Revised versions of the phase diagrams of the Cu-Sn, the Li-Sn and the Cu-Li, as well as a recent version of the Cu-Li-Sn will be presented.
Period2011
Event titleEuropean Congress on Advanced Materials and Processes
Event typeConference
LocationMontpellier, FranceShow on map