Ni-Land Fe-Ledge sXAS spectra collected on Li_xNi_1/3Mn_1/3Co_1/3O₂(a) and Li_xFePO₄(b) electrodes underin-situandex-situconditions, respectively. The red (dark purple) spectra correspond to the electrodes at fully discharged (charged) states. The evolution of the spectra represents the changes of the TM-3d states at different electrochemical stages. The well-defined isosbestic point of the Li_xFePO₄indicates a two-phase transformation.