材料科学
纳米片
超级电容器
剥脱关节
纳米线
纳米复合材料
复合数
电容
热液循环
化学工程
储能
纳米技术
水热合成
功率密度
电极
复合材料
石墨烯
功率(物理)
化学
物理
物理化学
量子力学
工程类
作者
Dhirendra Sahoo,Jyoti Shakya,Sudipta Choudhury,Susanta Sinha Roy,Lalita Devi,Budhi Singh,Pawan Kumar Srivastava,Bhaskar Kaviraj
出处
期刊:ACS omega
[American Chemical Society]
日期:2022-05-16
卷期号:7 (20): 16895-16905
被引量:22
标识
DOI:10.1021/acsomega.1c06852
摘要
To improve the production rate of MoS2 nanosheets as an excellent supercapacitor (SC) material and enhance the performance of the MoS2-based solid-state SC, a liquid phase exfoliation method is used to prepare MoS2 nanosheets on a large scale. Then, the MnO2 nanowire sample is synthesized by a one-step hydrothermal method to make a composite with the as-synthesized MoS2 nanosheets to achieve a better performance of the solid-state SC. The interaction between the MoS2 nanosheets and MnO2 nanowires produces a synergistic effect, resulting in a decent energy storage performance. For practical applications, all-solid-state SC devices are fabricated with different molar ratios of MoS2 nanosheets and MnO2 nanowires. From the experimental results, it can be seen that the synthesized nanocomposite with a 1:4 M ratio of MoS2 nanosheets and MnO2 nanowires exhibits a high Brunauer-Emmett-Teller surface area (∼118 m2/g), optimum pore size distribution, a specific capacitance value of 212 F/g at 0.8 A/g, an energy density of 29.5 W h/kg, and a power density of 1316 W/kg. Besides, cyclic charging-discharging and retention tests manifest significant cycling stability with 84.1% capacitive retention after completing 5000 rapid charge-discharge cycles. It is believed that this unique, symmetric, lightweight, solid-state SC device may help accomplish a scalable approach toward powering forthcoming portable energy storage applications.
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