Abstract:
본 발명은 화학식 Mg x Mn y SiO 4 (1≤x≤1.2, 0.8≤y≤1.0)로 표시되고 표면이 탄소로 코팅된 마그네슘 이차전지용 양극활물질 및 이의 제조방법을 제공한다. 본 발명의 마그네슘 이차전지용 양극활물질은 표면을 탄소로 코팅함으로써 입자의 성장을 억제하여 균일한 입자를 형성시키고, 높은 표면적을 가지게 되어 입자간의 이온의 이동이 용이하게 됨으로써 전기 전도성이 향상될 뿐만 아니라, 이와 같은 마그네슘 이차전지용 양극활물질을 포함하는 전극의 구조적 안정성을 개선시켜, 마그네슘 이차 전지의 초기용량 및 고율특성 등을 향상시킨다.
Abstract:
The present invention relates to a cathode material for a non-aqueous lithium secondary battery by using a spherical transition metal composite carbonate, and a manufacturing method thereof, which are to be able to realize a high capacity more than 200 mAh/g by improving the electrochemical activity of the final cathode material by manufacturing a spherical transition metal composite carbonate uniformly including nano-sized titanium dioxide by using a precipitation reaction in liquid. According to the present invention, a cobalt material, a nickel material, a manganese material, a carboxyl group material, a hetero-metal material for substitution and an ammonia material are precipitated to have a composition ratio of the chemical formula, Ni_xCo_yMn_1-x-y-zTi_2CO_3 (0.0
Abstract:
본 발명은 구형의 수산화코발트를 이용한 비수계 리튬이차전지용 양극재료의 제조 방법에 관한 것으로, 액상에서의 침전반응을 이용하여 이종금속이 균일하게 치환되어 있는 구형의 수산화코발트를 제조함으로써 최종 양극재료의 고전압에서의 구조 붕괴를 억제하여 수명특성을 향상시키기 위한 것이다. 본 발명에 따르면, 코발트원료, 수산화기원료, 치환용 이종금속원료 및 아민계원료를 화학식, Co 1-x M x (OH) 2 (0.00
Abstract:
PURPOSE: A cathode material for a secondary battery is provided to obtain a positive electrode material which can conduct insertion/separation of lithium/sodium by conducting a blending treatment by only one synthetic process without complex process. CONSTITUTION: A cathode material comprises a composite of LiMnPO4 and Na2MNPO4F. The mixing ratio of the composite is xLiMnPO4/(1-x)Na2MnPO4F, where X is 0
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