摘要:
A negative active material for a rechargeable lithium battery includes a compound represented by the following Formula 1: Li1+xTi1−x−yMyO2+z (1) wherein, in the above Formula 1, 0.01≦x≦0.5, 0≦y≦0.3, −0.2≦z≦0.2, and M is an element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, W, Ag, Sn, Ge, Si, Al, and combinations thereof. The negative active material has high capacity and excellent cycle-life characteristics, and particularly, can provide a rechargeable lithium battery having high capacity at high-rate charge and discharge.
摘要翻译:用于可再充电锂电池的负极活性材料包括由下式1表示的化合物:<?in-line-formula description =“In-line formula”end =“lead”?> Li 1 + x < (1)<?in-line-formula description =“在线公式(1) “end =”tail“?>其中,在上述式1中,0.01 <= x <=0.5,0≤y≤0.3,0.2≤z≤0.2,M是选自组 由V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Zr,Nb,Mo,W,Ag,Sn,Ge,Si,Al及其组合组成。 负极活性物质具有高容量和优异的循环寿命特性,特别是能够提供高容量充放电时的高容量的可再充电锂电池。
摘要:
A negative active material for a rechargeable lithium battery includes a compound represented by the following Formula 1: Li1+xTi1−x−yMyO2+z (1) wherein, in the above Formula 1, 0.01≦x≦0.5, 0≦y≦0.3, −0.2≦z≦0.2, and M is an element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, W, Ag, Sn, Ge, Si, Al, and combinations thereof. The negative active material has high capacity and excellent cycle-life characteristics, and particularly, can provide a rechargeable lithium battery having high capacity at high-rate charge and discharge.
摘要:
Negative active materials for rechargeable lithium batteries, manufacturing methods thereof, and rechargeable lithium batteries including the negative active materials are provided. The negative active material includes a compound represented by the Formula Li1+xV1-x-yMyO2+z. In one embodiment, the compound has an average particle size ranging from about 50 nm to about 30 μm. In another embodiment, the negative active material has a ratio of (003) plane diffraction intensity to (104) plane diffraction intensity ranging from about 1:1 to about 1:0.01 when measured using a Cu K α X-ray. According to another embodiment, after five charge/discharge cycles performed at 0.5C, a specific surface area of the negative active material increases to less than about 20 times a specific surface area before the five charge/discharge cycles. The negative active materials may improve battery capacity, and cycle-life characteristics.
摘要翻译:提供了用于可再充电锂电池的负极活性材料,其制造方法和包括负极活性材料的可再充电锂电池。 负极活性材料包括由式Li 1 + x 1 O 2-x M 2 O 2 O 2 + z 2表示的化合物, / SUB>。 在一个实施方案中,化合物具有约50nm至约30μm的平均粒度。 在另一个实施方案中,当使用CuKαX射线测量时,负极活性材料的(003)平面衍射强度与(104)平面衍射强度之比为约1:1至约1:0.01。 根据另一个实施方案,在0.5℃下进行五次充电/放电循环之后,负极活性物质的比表面积在五次充电/放电循环之前增加到小于约20倍的比表面积。 负极活性材料可以提高电池容量和循环寿命特性。
摘要:
Negative active materials for rechargeable lithium batteries are provided. One negative active material includes at least one Si active particle and a metal matrix surrounding the Si active particle. The metal matrix does not react with the Si active particle. The negative active material has a martensite phase when X-ray diffraction intensity is measured using a CuKα ray. The negative active material has improved efficiency and cycle-life.
摘要:
Negative active materials and rechargeable lithium batteries including the negative active materials are provided. The negative active material includes an intermetallic compound of Si and a metal, and a metal matrix including Cu and Al. The negative active material may provide a rechargeable lithium battery having high capacity and excellent cycle-life and cell efficiency.
摘要:
The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.
摘要:
A negative active material for a lithium rechargeable battery is provided. The negative active material includes an active metal core and a crack inhibiting layer disposed on a surface of the active metal core. The crack inhibiting layer includes a metal oxide.
摘要:
A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
摘要:
A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.