应用化学2019，Vol.36Issue(1)：75-82,8.DOI:10.11944/j.issn.1000-0518.2019.01.180034
不同形貌氧化镍纳米材料的合成及其电化学性能
Synthesis and Electrochemical Properties of NiO Nanomaterials with Different Morphologies
摘要
Abstract
NiO nanosheets have been synthesized via a facile solvothermal route using water-ethylene glycol as solvent and polyvinyl pyrrolidone (PVP) as surfactant. These NiO nanosheets were interweaved with each other to form hierarchical flower-shaped structures. Nanocubes and nanospheres were also obtained through changing the reaction temperature and solvent. The electrochemical tests were conducted using a three-electrode system in 6 mol/L KOH with the as-synthesized NiO as the working electrode. Electrochemical properties were characterized by cyclic voltammetry, galvanostatic charge/discharge measurements, and electrochemical impedance spectroscopy. NiO nanosheets exhibit the highest specific capacitance (402 F/g at current density of 0. 5 A/g) and the best rate capability (80. 1％ capacitance retention from 0. 5 A/g to 4 A/g) . NiO nanosheets also show excellent cycle stability, only lost 9. 7％ after 1000 cycles.关键词
溶剂热/NiO纳米材料/超级电容器/电容性能Key words
solvothermal/NiO nanomaterials/supercapacitors/capacitive performance分类
化学化工引用本文复制引用
符婉琛,李倩,冯冬冬,王伟..不同形貌氧化镍纳米材料的合成及其电化学性能[J].应用化学,2019,36(1):75-82,8.基金项目
国家自然科学基金 (51678059) （51678059）
陕西省自然科学基金 (2016JM5065) （2016JM5065）
中央高校基本科研业务费 (300102298202) 资助 （300102298202）
