低温热处理制备介孔NiO、Co_3O_4及超电容性能研究  

Synthesis of Mesoporous NiO and Co_3O_4 by Low-temperature Heat-treatment and Their Application to Supercapacitor

作　　者：郑明波[1] 凌宗欣[1] 廖书田[1] 杨振江[1] 姬广斌[1] 曹洁明[1] 陶杰[1] 

机构地区：[1]南京航空航天大学材料与科学技术学院纳米材料研究所,南京210016

出　　处：《化学学报》2009年第10期1069-1074,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(No.50701024);江苏省自然科学基金(No.BK2006195);江苏省高校研究生科技创新计划(No.BCXJ06-13)资助项目

摘　　要：在不使用有机试剂的条件下,通过简单的水热法制备了纳米结构的Ni(OH)2与Co(OH)2,低温热处理得到NiO与Co3O4.透射电子显微镜及N2等温吸附-脱附测试结果表明金属氧化物具有无序的介孔结构及高比表面积.电化学测试结果表明介孔金属氧化物具有良好的超电容性能,介孔NiO,Co3O4在5mA放电电流下的比电容分别达176,298F·g-1.Ni（OH）2 and Co（OH）2 with a nanostructure were synthesized by an easy hydrothermal method without using any organic reagent. NiO and Co3O4 were obtained via heat-treatment of the hydrates at 250 ℃ and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption-desorption analysis. The characterization results indicate that the metal oxides have a disordered mesoporous structure and high BET surface area. The results of electrochemical tests show that the mesoporous metal oxides have fine supercapacitive behaviors and their specific capacitance values at the discharging current of 5 mA are 176 and 298 F·g^-1, respectively.

关 键 词：介孔金属氧化物 纳米结构 超级电容器 

分 类 号：TM53[电气工程—电器] TG161.91[金属学及工艺—热处理]