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首页> 外文期刊>International Journal of Electrochemical Science >High Performance Pseudocapacitor Electrode Material Fabricated by Pulse Electro-Synthesized Cobalt Oxide Nanostructures
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High Performance Pseudocapacitor Electrode Material Fabricated by Pulse Electro-Synthesized Cobalt Oxide Nanostructures

机译：脉冲电合成氧化钴纳米结构制备的高性能伪电容器电极材料

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摘要

High surface Co3O4 nanosheets were prepared were synthesized by a facile two-step approach,including a pulsed cathodic deposition without any surfactant and followed calcination of precursor.The as-deposited material was composed of pure -cobalt hydroxide with sheet-like morphology. Thecalcined product was cubic spinel Co3O4 phase with sheet texture according to X-ray diffraction andscanning electron microscopy. The oxide formation on heating was discussed based on thethermogravimetric data. Brunauer-Emmett-Teller (BET) measurement showed the high surface area of2 about 164 m g for the prepared cobalt oxide nanosheets. The pseudocapacitor capacitance of the prepared electrode was as high as 501.6 F g at a current density of 2 A g , and the cycling stabilityremained about 89.9% after 2000 cycles. The fabricated electrode delivered energy and powerdensities of 29.43Wh/Kg and 0.33 W/g, respectively. These results confirmed the highpseudocapacitive performance of the prepared active nanomaterials.
机译：通过简便的两步法合成高表面Co3O4纳米片，包括不使用任何表面活性剂的脉冲阴极沉积和随后的前体煅烧。沉积的材料由具有片状形态的纯氢氧化钴组成。根据X射线衍射和扫描电子显微镜观察，煅烧产物为立方尖晶石Co 3 O 4相，具有片状织构。根据热重数据讨论了加热时的氧化物形成。 Brunauer-Emmett-Teller（BET）测量显示，所制备的氧化钴纳米片的表面积约为2 164 m g。制备的电极的假电容器电容在2 A g的电流密度下高达501.6 F g，并且在2000次循环后循环稳定性保持在约89.9％。制成的电极的能量和功率密度分别为29.43Wh / Kg和0.33 W / g。这些结果证实了所制备的活性纳米材料的高伪电容性能。

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