摘要
通过简单的高温固相法制备了(MnCoNiCu)MoO_(4)中熵钼酸盐,对其微观形貌、晶体结构和化学组成进行了深入研究。将其作为超级电容器电极材料,进行了相关电化学性能测试。测试结果表明,在1 A/g的电流密度下,(MnCoNiCu)MoO_(4)中熵钼酸盐的比电容值为438.3 F/g;在15 A/g的电流密度下,经过10000次循环充放电,初始比电容保持率为83.3%。证明了(MnCoNiCu)MoO_(4)中熵钼酸盐材料在超级电容器中的潜在应用。
In recent years,with the transformation of energy structure,higher requirements have been put forward for energy conversion and storage devices.As an important component of energy storage devices,electrode material is the focus of current research.In this study,medium-entropy molybdate material of(MnCoNiCu)MoO_(4)was prepared by simple solid state reaction.The microstructure,crystal structure,and chemical composition of(MnCoNiCu)MoO_(4)were studied in detail.As the supercapacitor electrode material,the electrochemical tests were carried out.(MnCoNiCu)MoO_(4)electrode exhibited typical pseudocapacitive characteristics owing to the Faradaic redox reactions of Mn^(2+)Mn^(3+),Co^(2+)Co^(3+),Ni^(2+)Ni^(3+),and Cu^(2+)Cu^(3+).The results showed that the specific capacitance of(MnCoNiCu)MoO_(4)was 438.3 F/g at 1 A/g,and the specific capacitance maintained to 83.3%at 15 A/g after 10000 cycles.This study demonstrates the potential application of the medium-entropy molybdate(MnCoNiCu)MoO_(4)in supercapacitors.
作者
苏旺
胡全丽
刘景海
Su Wang;Hu Quanli;Liu Jinghai(Nano Innovation Institute,Inner Mongolia Key Laboratory of Carbon Nanomaterials,Inner Mongolia Engineering Research Center of Lithium-Sulfur Battery Energy Storage,College of Chemistry and Materials Science,Inner Mongolia Minzu University,Tongliao 028000,China)
出处
《山东化工》
CAS
2023年第21期1-5,共5页
Shandong Chemical Industry
基金
国家自然科学基金(22261043)
内蒙古民族大学博士启动基金(BS456)
内蒙古自治区高等学校科学技术研究项目(NJZZ22461)
内蒙古自治区自然科学基金青年基金项目(2022QN02016)。
关键词
中熵
钼酸盐
超级电容器
medium-entropy
molybdate
supercapacitor
