Lee, Ji Yeong Kim, Ji Yoon Cho, Hae In Lee, Chi Ho Kim, Han Sung Lee, Sang Uck Prosa, Ty J. Larson, David J. Yu, Tae Hwan Ahn, Jae-Pyoung 2024-01-19T23:04:27Z 2024-01-19T23:04:27Z 2021-09-03 2018-03-01 0378-7753 https://pubs.kist.re.kr/handle/201004/121623 Accelerated capacity fading of LiNi1/3Co1/3Mn1/3O2 (NCM111) electrode by the chemical migration of lithium (Li) or transition metals (TMs), and surface reconstruction in the surface during electrochemical cycling were evaluated by correlative analysis of atom probe tomography (APT) and transmission electron microscopy (TEM). The cycled NCM111 showed a lack of Li at surface which provides the driving force for long-range Ni migration toward surface. A schematic model for phase transformation and the kinetics of TM migration within the layered structure by density functional theory (DFT) calculations was proposed. This study provides insights into capacity loss and voltage fade upon electrochemical charge-discharge process of NCM111 by measuring the variation of Li composition away from the surface. English ELSEVIER SCIENCE BV LITHIUM-ION BATTERIES AUGMENTED-WAVE METHOD SPECIMEN PREPARATION ELECTRON-MICROSCOPY CATHODE MATERIALS NICKEL-OXIDE TRANSITION SPECTROSCOPY PARTICLES CELLS Three-dimensional evaluation of compositional and structural changes in cycled LiNi1/3Co1/3Mn1/3O2 by atom probe tomography Article 10.1016/j.jpowsour.2018.01.042 1 JOURNAL OF POWER SOURCES, v.379, pp.160 - 166 JOURNAL OF POWER SOURCES 379 160 166 scie scopus 000427217200019 2-s2.0-85041429787 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article LITHIUM-ION BATTERIES AUGMENTED-WAVE METHOD SPECIMEN PREPARATION ELECTRON-MICROSCOPY CATHODE MATERIALS NICKEL-OXIDE TRANSITION SPECTROSCOPY PARTICLES CELLS