摘要:
음극활물질, 이를채용한음극및 리튬전지, 그리고상기음극활물질의제조방법이개시된다. 상기음극활물질은 Si, Ti, Ni 및 Fe 성분으로구성된실리콘계합금을포함하며, 상기실리콘계합금은비활성상으로서 TiNi 상을포함하며, 기존보다낮은함량의활성실리콘을포함한다. 상기음극활물질은리튬전지의방전용량및 수명특성을향상시킬수 있다.
摘要:
PURPOSE: A negative electrode active material is provided to maintain high capacity and to have excellent battery lifetime, by having a small volume expansion in charging and discharging process. CONSTITUTION: A negative electrode active material contains 66 at% or more of Si. A part of the Si includes crystalline Si-metal alloy. The crystalline Si has a crystal particle size of 30 nm. A secondary battery includes a case; an electrode assembly which is accommodated in the case and includes a negative electrode, positive electrode, and a separator between the electrodes; and an electrode assembly including the non-aqueous electrolyte. The negative electrode includes the negative electrode active material.
摘要:
PURPOSE: An electrode for a lithium secondary battery is provided to manufacture a lithium secondary battery with improved efficiency, capacity maintenance, and lifetime by effectively conducting an impregnation with an electrolyte solution. CONSTITUTION: An electrode for a lithium secondary battery includes a silicon-based alloy, has a surface roughness of 1-10 micron, and has a surface roughness deviation of 5 micron or lower. The silicon content of the silicon-based alloy is 60-72 atom%. The alloy for the silicon-based alloy includes active silicon and non-aqueous silicon. The content of the active silicon is 40-80 atom% based on the total content of the active silicon and non-aqueous silicon. A lithium secondary battery includes a first electrode including the electrode, a second electrode, and an electrolyte. [Reference numerals] (AA,BB) Electrolyte solution
摘要:
음극 활물질, 이를 채용한 음극 및 리튬 전지, 그리고, 상기 음극 활물질의 제조방법이 개시된다. 상기 음극 활물질은 Si, Al 및 Cu로 구성된 실리콘계 합금을 포함하며, 상기 실리콘계 합금은 비활성 상으로서 AlCu 및 Al 2 Cu를 소정 비율로 포함함으로써 리튬 전지의 수명 특성을 향상시킬 수 있다.
摘要:
Disclosed are an anode active material, a lithium secondary battery employing the same, and a manufacturing method of the anode active material. The anode active material is an alloy containing Si, Ti and Ni elements, wherein the alloy contains Si-phase and an alloy phase, and the ratio (I_(111)/I_(220)) of the peak intensity of the (111) surface to the peak intensity of the (220) surface in the X-ray diffraction spectrum of the Si-phase is 1.0-1.5.