物理化学学报2012，Vol.28Issue(2)：387-392,6.DOI:10.3866/PKU.WHXB201111241
Co3O4纳米线的丙三醇辅助合成及其电化学性质
Glycerol-Assisted Synthesis and Electrochemical Properties of Co3O4 Nanowires
摘要
Abstract
Cobalt oxide (Co3O4) nanowires were controllably synthesized using glycerol and Co(NO3)2 as reagents and adjustment of the experimental parameters.The morphology and structure of the asprepared products were characterized by a series of techniques such as X-ray podwer diffraction (XRD),scanning electron microscopy (SEM),and transmission electron microscopy (TEM).Electrochemical performance of the nanowires was studied by cyclic voltammetry (CV) and galvanostatic charge-discharge measurements.It was found that two pairs of redox peaks appeared in the CV curves of Co3O4 nanowire electrodes at low scan rates.The specific capacitance of the Co3O4 nanowire electrodes was 163 F·g-1 at a current density of 1 A· g-1,according to the galvanostatic charge-discharge measurements.Cycle stability tests showed that the specific capacitance increased over the first tens of cycles and then reduced slowly.After 1000 cycles,the capacitance retention was over 98％ at 1 A· g-1 and 80％ at 4 A· g-1; it then decreased obviously with further increase in cycle number.In Li-ion battery measurements,Co3O4 nanowire electrodes showed a discharge capacitance of 1124 mAh·g-1 which decreased rapidly during the cycle test.The formation mechanism and the relationship between the structure and electrochemical properties of Co3O4 nanowires were discussed based on the experimental results.关键词
电极/电容量/Co3O4/纳米线/丙三醇Key words
Electrode/Capacitance/Co3O4/Nanowire/Glycerol分类
化学化工引用本文复制引用
张国梁,赵丹,郭培志,位忠斌,赵修松..Co3O4纳米线的丙三醇辅助合成及其电化学性质[J].物理化学学报,2012,28(2):387-392,6.基金项目
国家自然科学基金(20803037,21143006),山东省自然科学基金(ZR2009BM013)和青岛市应用基础研究项目(11-2-4-2-(8)-jch)资助The project was supported by the National Natural Science Foundation of China (20803037,21143006).Natural Science Foundation of Shandong Province.China (ZR2009BM013),and Foundation of Qingdao Municipal Science and Technology Commission,China (11-2-4-2-(8)-jch). （20803037,21143006）
