有色金属材料与工程2024，Vol.45Issue(2)：27-38,12.DOI:10.13258/j.cnki.nmme.20230321001
沸石咪唑骨架衍生空心纳米电极材料可控制备及其电化学性能研究
Controllable preparation of hollow nanoelectrode materials derived from zeolitic imidazolate framework and study of their electrochemical properties
摘要
Abstract
Supercapacitor is a new type of energy storage device between rechargeable batteries and traditional electrostatic capacitors.It has the advantages of high power density,fast charging and discharging speed,and environmental friendliness.Among many electrode materials used in supercapacitors,metal organic framework material is considered as one of the most ideal electrode materials due to their large specific surface area,flexible composition and structure,and is also one of the ideal templates for preparing nanostructured electrode materials due to its easy synthesis,unique structure,and reaction characteristics.In this paper,hollow CoMo layered double hydroxides(LDH)nanocage structures were successfully prepared using zeolitic imidazolate frameworks(ZIF)-67 as a precursor by etching with sodium molybdate dihydrate solution.The effect of sodium molybdate content on the morphology and properties of the final product was also discussed.When used as an electrode material for supercapacitors,the prepared hollow Co1Mo5 LDH can provide a specific capacitance up to 578 F/g at 1 A/g,and the specific capacitance remains at 332 F/g when the current density increases to 10 A/g.After assembling an asymmetric supercapacitor with activated carbon,the energy density of the energy storage device can reach a maximum of 21.25 W·h/kg at a power density of 750 W/kg.At a current density of 5A/g,it retains almost 90%of its initial capacity after 15000 charge-discharge cycles.关键词
ZIF-67/纳米材料/空心纳米笼/层状双金属氢氧化物Key words
ZIF-67/nanomaterials/hollow nanocages/layered double hydroxides分类
化学工程引用本文复制引用
李雅月,赵斌..沸石咪唑骨架衍生空心纳米电极材料可控制备及其电化学性能研究[J].有色金属材料与工程,2024,45(2):27-38,12.基金项目
上海市自然科学基金资助项目(21ZR1445700) （21ZR1445700）
