Visualizing elemental deposition patterns on carbonaceous anodes from lithium ion batteries: A laser ablation-inductively coupled plasma-mass spectrometry study on factors influencing the deposition of lithium, nickel, manganese and cobalt after dissolution and migration from the Li_1 [Ni_(1/3)Mn_(1/3)Co_(1/3)]O_2 and LiMn_(1.5)Ni_(0.5)O_4 cathode

摘要

In this study, laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is applied to previously aged carbonaceous anodes from lithium ion batteries (LIBs). These electrodes are treated by cyclic aging in a lithium ion cell set-up against Li1 [Ni1/3Mn1/3Co1/3]O-2 = NMC111 to elucidate factors that influence transition metal dissolution (TMD) of the cathode and subsequent deposition on the anode. The investigations are carried out by qualitatively visualizing the 7Li and TM patterns (Ni-60, Mn-55 and Co-59) of whole coin and pouch-bag electrodes.