Article in the ACS Applied Energy Materials Journal

Li-S batteries have some important advantages over conventional Li-ion batteries, they are however not yet in commercial use. Ava Rajh and Dr Matjaž Kavčič from our department, in collaboration with colleagues from the Laboratory for Modern Battery Systems of the National Institute of Chemistry, led a study in which the processes in a Li-S battery were analyzed in the laboratory by measuring sulfur X-ray emission spectra in operando (during battery operation). This method is an alternative to absorption studies at synchrotron beamlines. Important advantages of X-ray emission spectroscopy are that it can be performed on samples with a sulfur concentration comparable to the state in a "real" battery and that it is much more accessible, which greatly accelerates the development of new materials.

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