(1. 吉首大學 化學化工學院，吉首 416000；
2. 中南大學 化學化工學院，長沙 410083)
摘 要: 以Ni(NO3)2·6H2O為主要原料，以尿素為沉淀劑，采用均勻沉淀法制備超細氧化鎳，并通過熱重−差熱(TG/DTA)、X射線衍射(XRD)、掃描電子顯微鏡(SEM)等分析手段對其進行了表征。采用此方法可以得到粒徑為1~3 μm的超細氧化鎳粉末。NiO的首次放電容量達到670.5 mA∙h/g，80次循環(huán)后每次循環(huán)的容量損失僅為0.031%，結(jié)果表明均勻沉淀法制備的NiO是一種優(yōu)秀的鋰離子電池負極材料。
關(guān)鍵字: 氧化鎳；均勻沉淀法；超細粉體；負極材料
（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
