摘 要：以碳酸盐为沉淀剂，采用共沉淀法合成 Ni_1/3Co_1/3Mn_1/3CO₃ 前 驱体，再按照一定的锂配比将其烧结合成层状 Li(Ni_1/3Co_1/3Mn_1/3)O₂。 通 过 SEM 及电性能测试仪等方法研究了碳酸盐前躯体的合成条件，考 察了碳酸盐前躯体的振实密度与合成的 pH 值、溶液浓度以及反应时 间的关系。 经过实验分析，在 pH=8、溶液浓度为 2 mol·L^-1 ，反应 时 12～13 h 时合成的碳酸盐前躯体 Ni_1/3Co_1/3Mn_1/3CO₃振实密度达到最高 值 0.98 g·cm^-3。 

关键词：共沉淀；前驱体；合成 

Abstract: The precursor Ni_1/3Co_1/3Mn_1/3CO₃ was synthesized by carbonate co-precipitation，and then mixed it with certain LiOH·H₂O. The layered Li(Ni_1/3Co_1/3Mn_1/3)O₂ was obtained by high temperature solid state reaction. The powder was characterized by scanning electron microscopy (SEM). The synthesis condition of precrusor Ni_1/3Co_1/3Mn_1/3CO₃ was studied. The influences of pH， reactant concentration and reaction time on the density of precursor Ni_1/3Co_1/3Mn_1/3CO₃ were investigated.The resrlts showed that the density was the maximum when the pH=8～9， c= 2 mol·L-1 and t= 12～13 h. 

Keywords: co-precipitation； precursor； synthesis