无机材料学报2018，Vol.33Issue(5)：501-506,6.DOI:10.15541/jim20170287
镍掺杂四氧化三钴纳米线阵列的制备及其超级电容特性
Synthesis and Supercapacitor Property of Ni-doped Co3O4Nanowire Array
摘要
Abstract
The novel Ni-doped Co3O4nanowire array was synthesized successfully by electrochemical deposition with the aid of anodic aluminum oxide (AAO) template, followed by oxidation at high temperature. The phase composition and morphology were characterized by X-ray diffraction, scanning electron microscope and high reso-lution transmission electron microscope. The results show that as-prepared Ni-doped Co3O4nanowire array perpen-dicular to the substrate displays highly uniform shape and size, with an average diameter of 80 nm and length of 1.4 μm. The nanowire with coarse surface is composed of small crystalline nanoparticles. Average atom ratio of Co to Ni in the nanowire is 20 : 1. Electrochemical characterization was performed using cyclic voltammetry and galvanostatic charge-discharge in a 2 mol/L KOH aqueous solution electrolyte. The test results indicate that the Ni-doped Co3O4 nanowire array exhibits a specific capacitance of 173 mF/cm2at current density of 10 mA/cm2, and a good cycling stability with 98% capacity retention over 1000 cycles. Excellent electrochemical performance can be attributed to the large specific surface area and the enhanced conductivity achieved by incorporating of Ni.关键词
纳米线/四氧化三钴/掺杂/模板法/超级电容Key words
nanowires/Co3O4/doping/template method/supercapacitor分类
化学化工引用本文复制引用
王军霞,赵建伟,秦丽溶,赵秉林,蒋正艳..镍掺杂四氧化三钴纳米线阵列的制备及其超级电容特性[J].无机材料学报,2018,33(5):501-506,6.基金项目
国家自然科学基金(11204246) （11204246）
重庆市基础与前沿研究计划项目(cstc2016jcyjA0125)National Natural Science Foundation of China(11204246) （cstc2016jcyjA0125）
Chongqing Research Program of Basic Research and Frontier Technology(cstc2016jcyjA0125) （cstc2016jcyjA0125）
