Liu YM1, G Nicolau B1, Esbenshade JL1, Gewirth AA1.
Anal Chem. 2016 Jul 19;88(14):7171-7. doi: 10.1021/acs.analchem.6b01292. Epub 2016 Jul 11.The solid electrolyte interface (SEI) formed via electrolyte decomposition on the anode of lithium ion batteries is largely responsible for the stable cycling of conventional lithium ion batteries. Similarly, there is a lesser-known analogous layer on the cathode side of a lithium ion battery, termed the cathode electrolyte interface (CEI), whose composition and role are debated. To confirm the existence and composition of the CEI, desorption electrospray ionization mass spectrometry (DESI-MS) is applied to study common lithium ion battery cathodes. Read More