Kim, Soo Kim, Chunjoong Jhon, Young-In Noh, Jae-Kyo Vemuri, Sesha Hari Smith, Robert Chung, Kyung Yoon Jhon, Myung S. Cho, Byung-Won 2024-01-20T13:32:14Z 2024-01-20T13:32:14Z 2021-09-04 2012-12 0959-9428 https://pubs.kist.re.kr/handle/201004/128629 Li2MnO3-stabilized LiCoO2 electrode materials were synthesized using the method of mechanochemical process. Li2MnO3 was prepared and the mechanochemical process was carried out with LiCoO2, which yielded the layered-layered integrated structure nanocomposites. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and high-resolution transmission electron microscopy studies confirmed the structural integration of 0.5Li(2)MnO(3)center dot 0.5LiCoO(2) electrode materials. We also performed the high temperature heat treatment, where our 0.5Li(2)MnO(3)center dot 0.5LiCoO(2) electrode materials showed improvement in the discharge capacity (similar to 180 mA h g(-1)) with good cycleability. To obtain a physical insight into the performance of the nanocomposite structure, we carried out first principles calculations to obtain activation energy barriers of Li+ de-/intercalation, which suggested that utilizing both Li2MnO3 and LiCoO2 components can enhance the Li+ diffusion for the layered-layered integrated structure. English ROYAL SOC CHEMISTRY LICOO2 CATHODE MATERIAL HIGH-ENERGY CATHODE LITHIUM BATTERIES SOLID-SOLUTIONS ELECTROCHEMICAL PROPERTIES POSITIVE-ELECTRODE HIGH-CAPACITY HIGH-POWER MN NI Synthesis of layered-layered 0.5Li(2)MnO(3)center dot 0.5LiCoO(2) nanocomposite electrode materials by the mechanochemical process and first principles study Article 10.1039/c2jm35654f 1 JOURNAL OF MATERIALS CHEMISTRY, v.22, no.48, pp.25418 - 25426 JOURNAL OF MATERIALS CHEMISTRY 22 48 25418 25426 scie scopus 000311970800055 2-s2.0-84870011006 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article LICOO2 CATHODE MATERIAL HIGH-ENERGY CATHODE LITHIUM BATTERIES SOLID-SOLUTIONS ELECTROCHEMICAL PROPERTIES POSITIVE-ELECTRODE HIGH-CAPACITY HIGH-POWER MN NI Li2MnO3-stabilized LiCoO2 nanocomposite first principles