草酸镍纳米棒成型—分解—烧结制备亚微米多孔镍薄片（英文）

Preparation of Submicro-porous Nickel Wafers by Molding-Decomposition-Sintering Method Using Nickel Oxalate Nano-Rods as Precursors

以离子液相沉淀技术制备的草酸镍纳米棒为前驱体,采用成型-分解-烧结技术,在氩气气氛炉中,于360？C温度分解反应10 min,然后分别于420,450,480和510℃温度条件下烧结反应10 min,制备出具有亚微米级尺寸多孔结构的金属镍薄片。红外光谱分析表明前驱体为较纯的草酸镍粉体,X射线衍射谱分析表明制备的多孔镍薄片样品具有面心立方晶体结构,扫描电子显微镜和原子力显微镜分析表明金属镍薄片样品显现出烧结状的多孔结构,孔结构不规则、不均匀,孔洞尺寸范围为100-1000 nm,孔壁是由直径100-300 nm的纤维状金属镍构成。

Submicro-porous nickel wafers were prepared by a molding-decomposition-sintering method, using nickel oxalate nano-rods synthesized via a liquid phase precipitation process as precursors, keeping the decomposition temperature of 360 °C for 10 min, and sintering temperature of 420, 450,480 and 510 °C for 10 min, in a tubular oven filled with Ar gas. The study of Infrared spectroscopy（IR） indicates that the as-prepared precursor was pure nickel oxalate. The results of X-ray diffractions（XRD） indicate that the as-treated grey wafers were nickel, which has face-centered cubic crystal structure. The images of scanning electron microscopy（SEM） and atomic force microscopy（AFM） show that the morphology of metal nickel wafers exhibit an obvious porous structure. The structure of pores is irregular with 100-1000 nm in diameter, and the pore walls are composed of fiber-like nickel with 100-300 nm in diameter.