基于有序结构镍钴双金属氧族化合物纳米阵列/碳泡沫复合材料的柔性不对称超级电容器  

Flexible Asymmetric Supercapacitors Based on Well-ordered Bimetallic Nickel-cobalt Chalcogenides Nanoarray/Carbon Foam Composites

作　　者：孙义民 易荣华 段纪青 周爱军[1] SUN Yimin;YI Ronghua;DUAN Jiqing;ZHOU Aijun(Hubei Key Laboratory of Plasma Chemistry and Advanced Materials,School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学材料科学与工程学院,等离子体化学与新材料湖北省重点实验室,武汉430205

出　　处：《材料导报》2021年第16期16001-16007,共7页Materials Reports

基　　金：湖北省自然科学基金面上项目(2019CFB415)。

摘　　要：以碳化三聚氰胺泡沫为柔性基底,负载高度有序的镍钴双金属氧/硫/硒化物纳米棒阵列和氧化铋纳米片阵列,分别作为正负极构筑了一系列不对称柔性超级电容器。研究表明,镍钴硒化物电容性能明显优于氧化物和硫化物,所制备的不对称电容器在1 mA/cm^(2)电流密度下面积电容可以达到620.9 mF/cm^(2),功率密度和能量密度分别为3.75 mW/cm^(3)和0.97 mWh/cm^(3),循环6000次电容保持率为91.2%,重复弯折200次后,仍保留88.6%的初始比电容。因此,基于镍钴硒化物和氧化铋的不对称超级电容器在高性能柔性储能器件领域具有潜在的应用价值。Aseries of flexible asymmetric supercapacitors were constructed by using carbonized melamine foam as flexible substrate,which was decorated by high-ordered nickel cobalt oxide/sulfide/selenide nanorods arrays and bismuth oxide nanosheets and used as positive and negative electrode respectively.The performance of Ni-Co selenide is better than those of oxide and sulfide,hence the as-obtained asymmetric supercapacitor shows a high area capacitance of 620.9 mF/cm^(2) at 1 mA/cm^(2),the power density and energy density are 3.75 mW/cm^(3) and 0.97 mWh/cm^(3),respectively,and the capacity retention rate of 6000 cycles is 91.2%.After bending for 200 times,the device still maintains 88.6%of its initial capacitance.Therefore,the asymmetric supercapacitor based on Ni-Co selenide and bismuth oxide has great potential in the field of high-performance flexible energy storage devices.

关 键 词：镍钴氧族化合物 氧化铋 纳米阵列 多孔碳泡沫 不对称超级电容器 

分 类 号：TM53[电气工程—电器]