Patent ID: 8658314
Filing Date: 2014-02-25
Classification: H01M,Y02E

Abstract:
1. A method of preparing the lithium-manganese-tin-oxide of formula (I): wherein, 0<x ≦0.05, the method comprising the steps of: a) mixing powders of Li, Mn and Sn compounds to obtain a mixed powder, wherein the amounts of the Li, Mn, and Sn compounds mixed together comprise 18.0 to 26.0 wt%, 72.4 to 81.9 wt%, and 0.1 to 1.6 wt%, respectively, based on the total weight of the mixed powder, and the Sn compound is selected from the group consisting of SnO, Sn(CH b) first-milling the mixed powder; c) calcining the first-milled powder; d) second-milling the calcined powder; e) pressing the second-milled powder; and f) sintering the pressed mixture.