中熵钼酸盐(MnCoNiZn)MoO4的制备及其电化学性能研究

宋超, 罗涵琼, 胡全丽*

化工新型材料 ›› 2025, Vol. 53 ›› Issue (10) : 196 -200.

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化工新型材料 ›› 2025, Vol. 53 ›› Issue (10) : 196-200. DOI: 10.19817/j.cnki.issn1006-3536.2025.10.012
科学研究

中熵钼酸盐(MnCoNiZn)MoO4的制备及其电化学性能研究

    宋超, 罗涵琼, 胡全丽*
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Preparation and electrochemical performance of medium-entropy molybdate (MnCoNiZn)MoO4

  • Song Chao, Luo Hanqiong, Hu Quanli
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摘要

“中熵”是近年来出现的材料设计理念,中熵材料具有独特的性能。采用简单的固相反应法制备了中熵钼酸盐(MnCoNiZn)MoO4,采用扫描透射电子显微镜、X射线多晶粉末衍射仪、X射线光电子能谱仪对其微观形貌、晶体结构和元素组成进行了分析和表征。将(MnCoNiZn)MoO4用于超级电容器电极并研究了其电化学性能。结果表明:电流密度为1A/g时,(MnCoNiZn)MoO4的比电容为407F/g;电流密度增加到15A/g时其比电容为321F/g;经过10000次充放电循环后,(MnCoNiZn)MoO4的比电容保持值为73.4%,表现出较高的比电容保持率。

Abstract

Medium-entropy is a material design concept that has emerged in recent years.The medium-entropy materials possess unique properties.Medium-entropy molybdate (MnCoNiZn)MoO4 was synthesized by a facile solid-state reaction method.The microstructure,crystallinity,and elemental composition were characterized and analyzed by scanning transmission electron microscopy,polycrystalline powder X-ray diffractometer and X-ray photoelectron spectroscopy.The electrochemical performances of (MnCoNiZn)MoO4 as supercapacitor electrodes were investigated.At a current density of 1A/g,the specific capacitance of (MnCoNiZn)MoO4 electrode was 407F/g.When the current density increased to 15A/g,the specific capacitance of the electrode was 321F/g.After undergoing 10000 charge-discharge cycles,(MnCoNiZn)MoO4 retained 73.4% of its initial specific capacitance,thereby proving an impressively high capacitance retention rate.

关键词

中熵 / 钼酸盐 / 超级电容器

Key words

medium-entropy / molybdate / supercapacitor

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中熵钼酸盐(MnCoNiZn)MoO4的制备及其电化学性能研究[J]. 化工新型材料, 2025, 53(10): 196-200 DOI:10.19817/j.cnki.issn1006-3536.2025.10.012

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基金资助

国家自然科学基金地区项目(22261043);内蒙古自然科学基金青年项目(2022QN02016);内蒙古自治区高等学校科学技术研究自然科学重点项目(NJZZ22461);内蒙古民族大学博士启动基金(BS456)

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