We report here the development of MnO2 nanostructure electrode for electrochemical energy storage application. MnO2 nanoparticles synthesized by a facile and efficient precipitation approach have been investigated for supercapacitor application. The structures and morphologies of MnO2 nanoparticles were systematically studied using X-ray diffraction, Raman spectroscopy and transmission electron microscopy. The synthesized nanoparticles are observed spherical in shape with uniform size distribution. The electrochemical properties were studied in two-electrode configuration by cyclic voltammetry process. A specific capacitance of 52.8[Formula: see text]F/g has been obtained for MnO2 nanoparticles at scan rate of 100[Formula: see text]mV/s. The electrode is able to deliver a power density of 0.66[Formula: see text]kW/kg and energy density of 1.8[Formula: see text]Wh/kg.

中文翻译：

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通过基于溶液的电化学电容器方法制备 MnO2 纳米颗粒

我们在这里报告 MnO 的发展2用于电化学储能应用的纳米结构电极。二氧化锰2已经研究了通过简便有效的沉淀方法合成的纳米颗粒用于超级电容器的应用。MnO的结构和形貌2使用 X 射线衍射、拉曼光谱和透射电子显微镜系统地研究了纳米颗粒。合成的纳米粒子呈球形，尺寸分布均匀。通过循环伏安法研究了双电极配置中的电化学性能。MnO 的比电容为 52.8[公式：见正文]F/g2扫描速率为 100 [公式：见正文]mV/s 的纳米粒子。该电极能够提供0.66[公式：见正文]kW/kg的功率密度和1.8[公式：见正文]Wh/kg的能量密度。