Kim, S.H. Lee, K.H. Seong, B.S. Kim, G.-H. Kim, J.S. Yoon, Y.S. 2024-01-21T02:04:14Z 2024-01-21T02:04:14Z 2021-09-02 2006-11 0256-1115 https://pubs.kist.re.kr/handle/201004/134986 Recently, lithium titanium oxide material has gained renewed interest in electrodes for lithium ion rechargeable batteries. We investigated the influence of excess Li on the structural characteristics of lithium titanium oxide synthesized by the conventional powder calcination method, considering the potential for mass production. The lithium excess ratio is controlled by using different weight of Li2CO3 powder during calcination. X-ray diffraction (XRD) measurement for the synthesized powder showed that the lithium titanium oxide material with excess lithium content had a spinel crystal structure as well as a different crystal one. In addition, high resolution transmission electron microscopy (HRTEM) and field emission scanning electron microscopy (FESEM) measurement revealed that the lithium titanium oxide powders with a lithium excess ratio of 5-20% exhibited a two phase formation. Inductively coupled plasma -atomic emission spectrometer (ICP-AES) and energy dispersive x-ray spectroscopy (EDX) measurements were used to analyze composition of the lithium titanium oxide powder. These results suggested that the conventional calcination method, considering the potential for mass production, formed two phases according to the Li excess amount in initial raw materials. English KOREAN INST CHEM ENGINEERS Synthesis and structural properties of lithium titanium oxide powder Article 10.1007/s11814-006-0015-1 1 Korean Journal of Chemical Engineering, v.23, no.6, pp.961 - 964 Korean Journal of Chemical Engineering 23 6 961 964 scie scopus kci ART001119223 000242756700015 2-s2.0-33847752725 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article SOL-GEL METHOD ELECTROCHEMICAL CHARACTERISTICS ION BATTERIES LI4TI5O12 SPINEL TRANSITION INSERTION ANODE HRTEM ICP-AES Li excess Lithium titanium oxide Mass production Rechargeable battery