(1. 吉首大学 化学化工学院，吉首 416000；
2. 中南大学 化学化工学院，长沙 410083)
摘 要: 以Ni(NO3)2·6H2O为主要原料，以尿素为沉淀剂，采用均匀沉淀法制备超细氧化镍，并通过热重−差热(TG/DTA)、X射线衍射(XRD)、扫描电子显微镜(SEM)等分析手段对其进行了表征。采用此方法可以得到粒径为1~3 μm的超细氧化镍粉末。NiO的首次放电容量达到670.5 mA∙h/g，80次循环后每次循环的容量损失仅为0.031%，结果表明均匀沉淀法制备的NiO是一种优秀的锂离子电池负极材料。
关键字: 氧化镍；均匀沉淀法；超细粉体；负极材料
（1. College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China;
2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China）
Abstract:Superfine NiO powders were prepared by a homogeneous precipitation method with an aqueous solution of nickel nitrate hexahydrate and urea. The microstructure, surface morphology of NiO were characterized by thermogravimertric (TG) analysis and differential thermal analysis (DTA), X-ray diffractometry (XRD), scanning electron microscopy (SEM), and infrared (IR) spectroscopy. Superfine NiO with particle size of 1−3 μm can be obtained by this method. NiO delivers a discharge capacity of more than 670.5 mA∙h/g, and the capacity loss per cycle after 80 times is only 0.031%, suggesting that superfine NiO derived from this method is an excellent anode material for lithium ion batteries.
Key words: nickel oxide; homogeneous precipitation method; superfine powder; anode material
