Abstract:
PURPOSE: A non-aqueous positive electrode material for lithium secondary battery using spherical porous oxide cobalt is provided to improve lifetime performance and to facilitate diffusion of lithium by obtaining structural stability even under 4.5 V. CONSTITUTION: A manufacturing method of a non-aqueous positive electrode material for lithium secondary battery comprises a spherical cobalt hydroxide with substituted hetero metal by impregnating aqueous solution in which cobalt raw material, hydroxyl group raw material, hetero metal raw material and ammonia raw material are mixed; and a step of manufacturing a porous oxide cobalt by heat-treating oxide cobalt. In the oxide cobalt manufacturing step, the oxide cobalt has a composition ratio of Co_(1-x)M_x(OH)_2 and average particle diameter of 5-25 micron, and in here 0.00
Abstract translation:本发明涉及一种使用球形过渡金属络合物碳酸盐的锂二次电池用非水系阴极材料及其制备方法。 本发明是为了确保优异的预期寿命,同时通过用纳米尺寸的金属氧化物涂覆球形过渡金属络合物碳酸盐的表面来实现250mAh / g以上的高容量,以提高结构稳定性 最终阴极材料。 根据本发明,通过使用钴材料,镍材料,锰材料,羧基材料和氨材料制备的球形过渡金属络合物碳酸盐的表面涂覆有二氧化钛, 制备具有表面涂覆有粒径为5-25μm的过渡金属氧化物的表面和由化学式表示的组成比的球形过渡金属络合物碳酸盐:Ni x Co y Mn 1-xy Ti z CO 3(0.0 < x‰¤0.3,0.0
Abstract:
본 발명은 리튬 이차전지용 양극 활물질 및 그의 제조 방법에 관한 것으로, 특히 니켈 고함량(Ni-rich) 양극 활물질의 표면에 실리콘 산화물이 코팅된 양극 재료를 제공함으로써, 상기 실리콘 화합물로 인해 열안정성과 전지 특성이 현저히 향상된 리튬 이차전지용 양극 활물질 및 그의 제조 방법에 관한 것이다. 본 발명에 따르면, 니켈 고함량(Ni-rich) 양극 활물질의 표면에 실리콘 산화물을 균일하게 코팅해줌으로써, 전해액의 부반응이 억제되어 사이클 특성 및 출력특성이 우수하며 열안정성이 효과적으로 개선된 리튬 이차전지를 제조할 수 있다.
Abstract:
The present invention relates to a manufacturing method of cathode material for Mg secondary batteries, and cathode material for Mg secondary batteries manufactured thereby, more specifically to a manufacturing method of cathode material for Mg secondary batteries which has Chevreul structure and which is coated with carbon, and Chevreul structured cathode material for Mg secondary batteries manufactured thereby. The method suppresses the growth of particles to form even particles by evenly coating the surface of the Chevreul structured cathode active material; the particles increases the spreading speed of Mg ions into the Chevreul structure by having a large surface area, which leads an improvement of conductivity. In addition, the present invention can improve: the structural safety of electrodes comprising the cathode material for Mg secondary batteries; the initial capacity of Mg secondary batteries; and the high efficiency property of Mg secondary batteries.