Noh, Jae-Kyo Kim, Soo Kim, Haesik Choi, Wonchang Chang, Wonyoung Byun, Dongjin Cho, Byung-Won Chung, Kyung Yoon 2024-01-20T10:00:16Z 2024-01-20T10:00:16Z 2021-09-04 2014-05-02 2045-2322 https://pubs.kist.re.kr/handle/201004/126802 Core/shell-like nanostructured xLi(2)MnO(3)center dot(1-x) LiMO2 (M=Ni, Co, Mn) composite cathode materials are successfully synthesized through a simple solid-state reaction using a mechanochemical ball-milling process. The LiMO2 core is designed to have a high-content of Ni, which increases the specific capacity. The detrimental surface effects arising from the high Ni-content are countered by the Li2MnO3 shell, which stabilizes the nanoparticles. The electrochemical performances and thermal stabilities of the synthesized nanocomposites are compared with those of bare LiMO2. In particular, the results of time-resolved X-ray diffraction (TR-XRD) analyses of xLi(2)MnO(3)center dot(1-x) LiMO2 nanocomposites as well as their differential scanning calorimetry (DSC) profiles demonstrate that the Li2MnO3 shell is effective in stabilizing the LiMO2 core at high temperatures, making the nanocomposites highly suitable from a safety viewpoint. English NATURE PUBLISHING GROUP CATHODE MATERIAL ELECTROCHEMICAL PROPERTIES THERMAL-STABILITY LINI0.5CO0.2MN0.3O2 CATHODE ELECTRODE MATERIALS PERFORMANCE LINI1/3CO1/3MN1/3O2 IMPROVEMENT COMPLEXITY MECHANISM Mechanochemical Synthesis of Li2MnO3 Shell/LiMO2 (M = Ni, Co, Mn) Core-Structured Nanocomposites for Lithium-Ion Batteries Article 10.1038/srep04847 1 SCIENTIFIC REPORTS, v.4 SCIENTIFIC REPORTS 4 scie scopus 000335216500003 2-s2.0-84899788799 Multidisciplinary Sciences Science & Technology - Other Topics Article CATHODE MATERIAL ELECTROCHEMICAL PROPERTIES THERMAL-STABILITY LINI0.5CO0.2MN0.3O2 CATHODE ELECTRODE MATERIALS PERFORMANCE LINI1/3CO1/3MN1/3O2 IMPROVEMENT COMPLEXITY MECHANISM Mechanochemical Synthesis Li2MnO3 LiMO2 Nanocomposites Core-Shell