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CN104703921B Li-Ni复合氧化物颗粒粉末和非水电解质二次电池 有权

Li-Ni复合氧化物颗粒粉末和非水电解质二次电池
Abstract:
本发明涉及Li‑Ni复合氧化物颗粒粉末及其制造方法，该Li‑Ni复合氧化物颗粒粉末的特征在于：组成为Lix(NiyCo2(1‑y)/5Mn3(1‑y)/5)1‑zMzO2(1.00≤x≤1.10，0.65＜y＜0.82，0≤z≤0.05，M为选自Al、Zr、Mg中的至少一种元素)。本发明的Li‑Ni复合氧化物颗粒粉末在用作非水电解质二次电池的正极活性物质的情况下，初期放电容量高且初次的充放电效率优异。
Abstract(English):

The present invention relates to Li-Ni composite oxide particles having a composition of Li x (Ni y Co 2(1-y)/5 Mn 3(1-y)/5 ) 1-z M z O 2 wherein x, y and z represent 1.00 ‰¤ x ‰¤ 1.10; 0.65 < y < 0.82; and 0 ‰¤ z < 0.05, respectively; and M is at least one element selected from the group consisting of Al, Zr and Mg. The Li-Ni composite oxide particles of the present invention exhibit a high initial discharge capacity and are excellent in first-cycle charge/discharge efficiency when used as a positive electrode active substance for non-aqueous electrolyte secondary batteries.

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