Kim, Seon Hye Lee, Kook Jae Shim, Kwang Bo Kim, Chang Sam 2024-01-19T13:38:05Z 2024-01-19T13:38:05Z 2022-03-07 2007 0255-5476 https://pubs.kist.re.kr/handle/201004/116375 Lithium manganese oxide (LiMn2O4) powders for lithium ion batteries were synthesized from two separate raw material pairs, LiOH/MnO and LiOH/MnO2. The prepared powders and their electrochemical properties were investigated. Powders calcined at 780 degrees C were composed of a single-phase spinet structure but those treated at 850 degrees C showed a higher intensity ratio of I-400 to I-311, a slightly larger lattice parameter, and an increased discharge capacity by 10% under 3.0 similar to 4.3V voltage range. The XPS study on the oxidation states of manganese repealed that powders made from LiOH/MnO had less Mn3+ ion and gave better battery performances than those from LiOH/MnO2. English TRANS TECH PUBLICATIONS LTD Oxidation state of manganese in LiMn2O4 powders and its effect on electrochemcal properties Conference 10.4028/www.scientific.net/MSF.534-536.1473 1 Power Metallurgy World Congress and Exhibition 2006, v.534-536, pp.1473 - + Power Metallurgy World Congress and Exhibition 2006 534-536 1473 + SZ Busan, SOUTH KOREA 2006-09-24 PROGRESS IN POWDER METALLURGY, PTS 1 AND 2 000244522400367 2-s2.0-38349140334 Proceedings Paper