均匀沉淀法制备NiO超细粉末及其电化学性能
来源期刊：中国有色金属学报2008年增刊第1期
论文作者：何则强 孙新阳 熊利芝 刘文萍 陈上 吴显明 黄可龙
文章页码：301 - 305
关键词：氧化镍；均匀沉淀法；超细粉体；负极材料
Key words：nickel oxide; homogeneous precipitation method; superfine powder; anode material
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。
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.
基金信息：国家自然科学基金资助项目
中国博士后科学基金资助项目
湖南省自然科学基金资助项目
湖南省教育厅科学研究资助项目
中南大学博士后科学基金资助项目
