Lithium-Nickel-Oxid Herstellungsverfahren und dieses enthältende nichtwasserige Sekundärbatterie

摘要

A process of preparing lithium nickel oxide which may be used as a positive electrode active material comprises dissolving a water-soluble lithium compound and a water-soluble nickel compound in water to form a homogenous aqueous solution; co-precipitating from the aqueous solution slightly water-soluble salts of lithium and nickel and calcining the co-precipitate to obtain lithium nickel oxide. The calcination is carried out at a temperature of 500 to 1000 DEG C, and the lithium nickel oxide product has the formula LixNiO2 in which 0.8 ≤ x ≤ 1.2. The co-precipitation is achieved by addition of an organic acid such as oxalic, malonic, succinic, maleic, fumaric, malic, citramalic or tartaric acid. A lithium compound may be added to the co-precipitate before calcination.