摘要:
A cathode material with excellent capacity and output characteristies and safety, and a lithium ion secondary battery using the same is provided. The invention relates to a cathode material which includes a mixture of a cathode active material having a large primary particle size with excellent capacity characteristics and represented by the composition formula: Li x1 Ni a1 Mn b1 Co c1 O 2 , where 0.2 ≤ x1 ≤ 1.2, 0.6 ≤ a1, 0.05 ≤ b1 ≤ 0.3, 0.05 ≤ c1 ≤ 0.3, and another cathode active material having a small primary particle size with excellent output characteristics and represented by the composition formula: Li x2 Ni a2 Mn b2 Co c2 O 2 , where 0.2 ≤ x2 ≤ 1.2, a2 ≤ 0.5, 0.05 ≤ b2 ≤ 0.5, 0.05 ≤ c2 ≤ 0.5. The invention also relates to a lithium ion secondary battery using the cathode material. Fig. 1
摘要翻译:提供具有优异的容量和输出征及其安全性,和使用其的锂离子二次电池的阴极材料。 本发明涉及一种包括具有大的一次粒径具有优异的容量特性的正极活性物质的混合物,并且由组成式表示的阴极材料:锂X1的Ni A1锰B1钴C1 O 2,其中0.2‰¤X 1‰ ¤1.2,0.6‰¤A1,00:05‰¤B1‰¤0.3,12:05‰¤C1‰¤0.3,并且具有小的一次粒径具有优良的输出特性和由组成式表示的另一种阴极活性材料为Li x2镍A2 锰钴B2 C2 O 2,其中0.2×2‰¤¤‰1.2,α2‰¤0.5,00:05‰¤¤‰B2 0.5,12:05‰¤¤‰C2 0.5。 因此本发明涉及使用该正极材料的锂离子二次电池。 图1