Structural changes upon lithium insertion in Ni0.5TiOPO4

▸ Nickel titanium oxyphosphate Ni0.5TiOPO4 (NTP), was prepared by solid state reaction. ▸ The NTP electrode delivered a capacity of 530 mAh/g, upon cycling within 0.8-4 V. ▸ In situ synchrotron X-ray diffraction was achieved to elucidate the electrochemical reaction mechanism. ▸ High capacity equivalent to the intercalation of more than 3.5 lithium ions per Ni0.5TiOPO4.