Chae, Yujin Lee, Joong Kee Choi, Wonchang 2024-01-20T09:01:14Z 2024-01-20T09:01:14Z 2021-09-02 2014-09-15 1572-6657 https://pubs.kist.re.kr/handle/201004/126348 Lithium-nickel-manganese-oxide was coated using sputtering equipment on spinel LiMn2O4 cathode electrodes prepared by a conventional tape-casting method. Surface modification of the electrodes was confirmed by field emission scanning electron microscopy and field-emission electron-probe microanalysis. Electrochemical evaluations were performed in constant current mode and the galvanostatic intermittent titration technique revealed that surface coating improved the rate capability of electrode in lithium cells. The surface-modified electrode exhibited better capacity retention and suppressed the impedance increase during the storage test at 60 degrees C in a fully charged state as compared to the bare electrode. Also, the lithium-nickel-manganese-oxide deposition improves the thermal stability of electrodes as confirmed by differential scanning calorimetry. (C) 2014 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA DISSOLUTION Surface coating of spinel LiMn2O4 cathode electrode with lithium-nickel-manganese-oxide by RF sputtering method for lithium-ion batteries Article 10.1016/j.jelechem.2014.07.026 1 JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.730, pp.20 - 25 JOURNAL OF ELECTROANALYTICAL CHEMISTRY 730 20 25 scie scopus 000342955900004 2-s2.0-84906486365 Chemistry, Analytical Electrochemistry Chemistry Electrochemistry Article DISSOLUTION Surface modification Sputtering method Spinel lithium manganese oxide Lithium-nickel-manganese-oxide Lithium-ion battery