NEW PUBLICATION: In operando study of the high voltage spinel cathode material LiNi0.5Mn1.5O4 using two dimensional full-field spectroscopic imaging of Ni and Mn

  • Date: 2015

SEM micrographs of LiNi0.5Mn1.5O4 granules sintered at 1273 K.

LiNi0.5Mn1.5O4 spinel cathode was studied during the first discharge cycle using combined full field Transmission X-ray Microscopy (TXM) and X-ray Absorption Near Edge Structure Spectroscopy (XANES) techniques to follow the chemical phase transformation as well as the microstructural evolution of cathode materials upon operation within an electrochemical cell. The spatial distribution and electrochemical process of the spinel material with spherical granules of 30 mm and 3 mm crystallite size was investigated. The spectroscopic imaging of the cathode within field of view of 40