【摘要】 采用沉淀转化法制备纳米结构β-氢氧化镍,用X射线衍射(XRD)、比表面仪(BET)、场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)等进行结构和形貌表征。结果显示,所得β-氢氧化镍呈片状和棒状的混合纳米结构,片层厚度约为35 nm,棒长为50~80 nm,且比表面积约为68 m2/g。用线性电位扫描对β-氢氧化镍与二氧化锰复合电极的电催化性能进行研究,发现含有10%M nO2/10%N i(OH)2的催化材料,在-0.7 V(vs.SCE)的极化电位下可获得约87 mA/cm2的电流密度,与单一的M nO2催化材料(约68 mA/cm2)相比有更佳的催化活性。更多还原

【Abstract】 Nanostructured β-nickel hydroxide powder is synthesized by a precipitate-transformation method.The structure and the morphology of the synthesized products are studied by X-ray diffraction（XRD）,BET surface area,field emission scaning electron microscope（FE-SEM）,Transmission electron microscope（TEM）.Experimental results show that β-nickel hydroxide submits a mixed structure of nanosheets and nanorods,the thickness of the sheet is about 35 nm,and the length of the rod is in（50-80） nm.The specific surface area is about 68 m²/g.The electrocatalytical properties of the complex electrode consisted of β-nickel hydroxide and manganese dioxide are studied by using the linear potential sweep.It is found that the current density of positive materials including 10%MnO₂/10%Ni（OH）₂ is about 87 mA/cm² at-0.7 V（vs.SCE）.Compared with single manganese dioxide positive materials（about 68 mA/cm²） it has better electrocatalytical properties.更多还原