Kim, Soo Kim, Chunjoong Noh, Jae-Kyo Yu, Seungho Kim, Su-Jin Chang, Wonyoung Choi, Won Chang Chung, Kyung Yoon Cho, Byung-Won 2024-01-20T13:30:36Z 2024-01-20T13:30:36Z 2021-09-04 2012-12-15 0378-7753 https://pubs.kist.re.kr/handle/201004/128545 A strategy of facile route to prepare the Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrode materials, cathode materials for Lithium secondary batteries that can be operated at the high voltage greater than 4.5 V. is proposed using the method of mechanochemical process. Li2MnO3 was synthesized at 400 degrees C, followed by the mechanochemical process with LiMO2 to form nanocomposite with the layered-layered structure. Structures and morphologies of xLi(2)MnO(3)center dot(1-x)LiMO2 are investigated to confirm the layered-layered structural integration. Various mole ratios of our xLi(2)MnO(3)center dot(1-x)LiMO2 electrode materials exhibit a large discharge capacity about 200 mAh g(-1) at the room temperature. The cycle performances and the specific discharge capacities are improved by the secondary heat treatment for the xLi(2)MnO(3)center dot(1-x)LiMO2 composite electrodes where x <= 0.5. Our experimental results suggest the mechanochemical process is an easy and effective tool to form the nanocomposite of two components with controlled composition, especially, for the layered layered integrated structure of xLi(2)MnO(3)center dot(1-x)LiMO2 system. (C) 2012 Elsevier BM. All rights reserved. English ELSEVIER SCIENCE BV RECHARGEABLE LITHIUM BATTERIES HIGH-ENERGY CATHODE ION BATTERIES COPRECIPITATION COMPLEXITY CAPACITY LI2MNO3 LICOO2 XPS Synthesis of layered-layered xLi(2)MnO(3)center dot(1-x)LiMO2 (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process Article 10.1016/j.jpowsour.2012.07.135 1 JOURNAL OF POWER SOURCES, v.220, pp.422 - 429 JOURNAL OF POWER SOURCES 220 422 429 scie scopus 000309990300058 2-s2.0-84865494568 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article RECHARGEABLE LITHIUM BATTERIES HIGH-ENERGY CATHODE ION BATTERIES COPRECIPITATION COMPLEXITY CAPACITY LI2MNO3 LICOO2 XPS Lithium secondary battery Cathodes Mechanochemical process Nanocomposite