PAA络合法制备NiO薄膜的结构和形貌研究
Study on Structure and Morphology of NiO Thin Film Prepared by PAA Complexation Method
蔡 羽1, 朱金娥2, 吴朝阳2, 赵胜利2
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作者单位：1. 河南科技大学 信息管理研究所, 河南 洛阳 471003; 2. 河南科技大学 材料学院, 河南 洛阳 471003
中文关键字：锂离子电池； NiO薄膜； PAA络合法
英文关键字：lithium ion battery; NiO thin film; PAA complexation
中文摘要：采用高分子络合法在不锈钢片上沉积了NiO薄膜，利用热重-差热(TG-DSC)、X射线衍射(XRD)和扫描电镜(SEM)等对前驱体的热分解行为、薄膜的结构和形貌进行表征。结果表明：在烧结过程中，凝胶前驱体在450 ℃完全分解并逐渐形成NiO纳米晶。在较高温度下进行干燥并降低烧结升温速率可显著减少NiO表面缺陷；在升温速率为0.5 ℃/min，200 ℃干燥2 h后经500 ℃烧结2 h获得了晶体结构完整、表面均匀、致密、光滑的NiO薄膜，有望作为阳极材料用于全固态薄膜锂离子电池。
英文摘要：The thermal decomposition behavior of gel precursor, the structure, morphology and electrochemical properties of NiO thin film prepared by PAA complexation were characterized by thermogravimetric, differential scanning calorimetry (TG-DSC), XRD, SEM and constant current charge-discharge techniques. The results show that the gel precursor completely decomposes and gradually forms the nanocrystalline NiO at 450 ℃ during the sintering. The surface deficiency of NiO thin film can be reduced prepared at high drying temperature and low heating rate. A smooth, uniform, free of cracks and structure integrity NiO thin film is obtained at drying at 200 ℃ for 2 h and sintering at 500 ℃ for 2 h with a heating rate of 0.5 ℃/min, promising to be used in Li-ion battery as anode material.