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Impurity containing cathode material with preferred morphology and method to prepare from impurity containing metal carbonate
Impurity containing cathode material with preferred morphology and method to prepare from impurity containing metal carbonate
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机译:具有优选形态的含杂质阴极材料和由含杂质金属碳酸盐制备的方法
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摘要
A carbonate precursor compound for manufacturing a lithium metal (M)-oxide powder usable as an active positive electrode material in lithium-ion batteries, M comprising 20 to 90 mol % Ni, 10 to 70 mol % Mn and 10 to 40 mol % Co, the precursor further comprising a sodium and sulfur impurity, wherein the sodium to sulfur molar ratio (Na/S) is 0.4Na/S2. Thes lithium metal (M)-oxide powder has a particle size distribution with 10 μm≤D50≤20 μm, a specific surface with 0.9≤BET≤5, the BET being expressed in g/cm2, the powder further comprises a sodium and sulfur impurity, wherein the sum (2*Nawt)+Swt of the sodium (Nawt) and sulfur (Swt) content expressed in wt % is more than 0.4 wt % and less than 1.6 wt %, and wherein the sodium to sulfur molar ratio (Na/S) is 0.4Na/S2.
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机译:用于制造可用作锂离子电池中的活性正极材料的锂金属(M)-氧化物粉末的碳酸酯前体化合物,M包含20至90 mol%的Ni,10至70 mol%的Mn和10至40 mol%的Co ,所述前体进一步包含钠和硫杂质,其中钠与硫的摩尔比(Na / S)为0.4 <Na / S <2。该氧化锂金属粉末的粒径分布为10μm≤D50≤20μm,比表面积为0.9≤BET≤5,BET以g / cm 2 Sup>表示,该粉末还包含钠和硫杂质,其中钠(Na wt Sub>)的总和为(2 * Na wt Sub>)+ S wt Sub>且以重量%表示的硫(S wt Sub>)含量大于0.4重量%且小于1.6重量%,且钠硫比(Na / S)为0.4 展开▼