The present invention discloses a high compact density nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and methods of its preparation. A preparation method of this battery cathode material is as follows: (A) preparing a nickel-cobalt-manganese multi-element intermediate with dopants by co-precipitation or chemical synthesis; (B) preparing a mixture by mixing said multi-element intermediate with a lithium sa (C) pre-treating the said mixture, then adding into it polyvinyl alcohol and mixing uniformly; (D) pressing the resulting material into lumps, calcining the lumps at 800950° C., cooling after its removal from the furnace, crushing, passing through a 400 mesh sieve; (E) calcining the resulting power at 700800° C., cooling after its removal from the furnace, crushing and sieving to obtain a product. The lithium battery cathode material obtained using the above-described method has the formula LiNixCoyMnzM(1-x-y-z)O2. The cathode material has non-agglomerated single crystal particles. The material has a particle size ranging from 0.630 m, a compact density of 3.53.7 g/cm3, and an initial discharge capacity of 150165 mAh/g, with excellent cycling and safety performance.
展开▼
机译：本发明公开了一种具有掺杂剂的高致密密度镍钴锰多元素锂离子电池正极材料及其制备方法。该电池正极材料的制备方法如下：（A）通过共沉淀或化学合成制备具有掺杂剂的镍钴锰多元素中间体。 （B）通过将所述多元素中间体与锂盐混合来制备混合物; （C）预处理所述混合物，然后向其中加入聚乙烯醇并均匀混合; （D）将所得材料压成块，将其在800950℃下煅烧，从炉中取出后冷却，粉碎，通过400目筛; （E）在700800℃下煅烧所得功率，将其从炉中移出后冷却，粉碎并过筛以获得产物。使用上述方法获得的锂电池正极材料具有式LiNixCoyMnzM（1-x-y-z）O2。阴极材料具有非团聚的单晶颗粒。该材料的粒径为0.630 m，紧密密度为3.53.7 g / cm3，初始放电容量为150165 mAh / g，具有出色的循环和安全性能。
展开▼
