Combining high temperature electrochemistry and time of flight secondary ion mass spectrometry: Quasi in situ study of lanthanum strontium chromate manganate electrodes

► ToF SIMS in situ polarisation experiments of SOFC model electrodes. ► Electrode surface composition changes with applied voltage. ►Electrode surface composition changes already during the sinter process. ► Electrode composition can be switched several times by changing the polarity of the voltage.