STEM images were acquired using JEOL ARM 200F equipped with a cold field emission source at 200 kV. HAADF detector able was 90-270 mrad and the LAADF detector angle ranged between 30 and 120 mrad. EELS spectra were acquired using a Gatan GIF Continuum ER with a dwell time of 0.03 s per pixel. The Li K signal was assigned between 60.3 eV to 62.8 eV for mapping. EDS spectra imaging was acquired using an Oxford X-Max 100TLE windowless SDD detector with a dwell time of 6.14 ms.