Shlyakhtin, OA Yoon, YS Choi, SH Oh, YJ 2024-01-21T06:05:11Z 2024-01-21T06:05:11Z 2021-09-05 2004-11-30 0013-4686 https://pubs.kist.re.kr/handle/201004/137035 The influence of several processing conditions on the phase formation and electrochemical performance of LiNi0.5Mn0.5O2 powders, obtained by freeze drying method, is studied. Thermal processing in pellets at maximum heating rate promotes better crystallographic ordering of hexagonal LiNi0.5Mn0.5O2 and maximum capacity values irrespectively of chemical composition of the precursor. Instead, intense mechanical processing of precursors exerts considerable negative effect on the electrochemical performance. Cathode materials containing superstoichiometric amount of lithium (Li1.3Mn0.5Ni0.5O2+delta) demonstrate reversible capacity values up to 190 mAh/g between 2.5 and 4.6 V. (C) 2004 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD SITU X-RAY ELECTROCHEMICAL PROPERTIES LITHIUM PERFORMANCE Freeze drying synthesis of LiNi0.5Mn0.5O2 cathode materials Article 10.1016/j.electacta.2004.05.051 1 ELECTROCHIMICA ACTA, v.50, no.2-3, pp.505 - 509 ELECTROCHIMICA ACTA 50 2-3 505 509 scie scopus 000225261000051 2-s2.0-9444235653 Electrochemistry Electrochemistry Article; Proceedings Paper SITU X-RAY ELECTROCHEMICAL PROPERTIES LITHIUM PERFORMANCE lithium nickel manganese oxide cathode materials Li-ion batteries freeze drying chemical prehistory