有色金属科学与工程2025，Vol.16Issue(3)：337-346,10.DOI:10.13264/j.cnki.ysjskx.2025.03.002
溶剂热法合成钴酸镍及其电化学性能
Study on solvothermal synthesis of nickel cobaltite and its electrochemical properties
摘要
Abstract
With cobalt nitrate and nickel nitrate as raw materials,ethanol and isopropanol of different concentrations as solvents,the precursor was synthesized on foam nickel by solvothermal method and calcined to obtain nickel cobaltite,to investigate the effects of solvent type and concentration on the morphology and electrochemical properties of the synthesized products.The sample was characterized by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy(SEM)to determine the phase composition and to observe its micromorphology.The electrochemical properties of the sample were tested by cyclic voltammetry(CV),galvanostatic charge-discharge(GCD)and electrochemical impedance spectroscopy(EIS).The results show that the nickel cobaltite synthesized in 50%volume concentration of ethanol solution and isopropanol solution both have a regular nanowire structure,which is conducive to the redox reaction,contributing to the good electrochemical properties of the material.The nickel cobaltite synthesized in 50%volume concentration of ethanol solution shows better electrochemical performance,with a specific capacitance of 627 F/g at the current density of 1 A/g,and a capacity retention rate of 94%after 500 cycles at the current density of 10 A/g.关键词
钴酸镍/溶剂热法/乙醇/异丙醇/电化学性能Key words
Nickel cobaltite/solvothermal method/ethanol/isopropanol/electrochemical performance分类
矿业与冶金引用本文复制引用
王碧侠,韩家浩,于翔,党晓娥,梁李斯..溶剂热法合成钴酸镍及其电化学性能[J].有色金属科学与工程,2025,16(3):337-346,10.基金项目
陕西省自然科学基础研究资助项目(2021JM-374) （2021JM-374）
