Abstract The supercapacitors are a static energy storage device that can stock and supply energy at an enhanced rate. They exhibit a high-power density coupled with long cycling life which are highly significant for the superior energy storage platforms. In such a way, we prepared cobalt oxide nanostructures using mesoporous silica (M41) as template and used as an electrochemical supercapacitor. The synthesized M41/m-Co3O4 nanobuds were thoroughly characterized for its crystallinity, morphology, composition and surface area. The M41/m-Co3O4 nanobuds were utilized as a modified electrode material in the electrochemical system and studied in 1 M KOH as an electrolyte solution for cyclic voltammetry (CV) and electro impedance spectroscopy studies (EIS). The EIS ensures the effortless charge transfer mechanism which facilitates rapid ion diffusion leading to the high accumulation of charges. Thus, an impressive specific capacitance of 228.87 F g−1 with excellent cycling stability of 87.5% over 1000 cycles was achieved through our investigation.

中文翻译：

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模板辅助 (MCM-41) 介孔 Co3O4 纳米结构的研究及其优异的超级电容保持能力

摘要 超级电容器是一种静态储能装置，能够以更高的速度储存和供应能量。它们表现出高功率密度和长循环寿命，这对于卓越的储能平台非常重要。以这种方式，我们使用介孔二氧化硅（M41）作为模板制备了氧化钴纳米结构并用作电化学超级电容器。合成的 M41/m-Co3O4 纳米芽对其结晶度、形态、组成和表面积进行了彻底的表征。M41/m-Co3O4 纳米芽被用作电化学系统中的改性电极材料，并在 1 M KOH 中作为循环伏安法 (CV) 和阻抗谱研究 (EIS) 的电解质溶液进行研究。EIS 确保轻松的电荷转移机制，促进快速离子扩散，导致电荷大量积累。因此，通过我们的研究，获得了令人印象深刻的 228.87 F g-1 比电容，并且在 1000 次循环中具有 87.5% 的优异循环稳定性。