Porous bamboo‐like CNTs prepared by a simple and low‐cost steam activation for supercapacitors,International Journal of Energy Research

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Porous bamboo‐like CNTs prepared by a simple and low‐cost steam activation for supercapacitors
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-07-06 , DOI: 10.1002/er.5672
Yang Gao ₁ , Yakun Tang ₁ , Wei Liu ₁ , Lang Liu ₁ , Xingyan Zeng ₁

Affiliation

How to prepare porous carbons with appropriate structure for supercapacitors is a big challenge. In general, activation is the simplest way to obtain porous carbons. Porous bamboo‐like CNTs were fabricated by simple activating sulfonated polymer nanotubes with steam at 800°C. Compared with the un‐activated one, activated carbon nanotubes (ACNTs) have good tubular structure, larger specific surface area and rich porosity thanks to the protection of steam during the activation. The ACNTs electrode for supercapacitors displays a specific capacity of 276 F g⁻¹ at 1 A g⁻¹. When assembling ACNTs into a symmetrical supercapacitor, the specific capacity of the device can retain 98% after 10 000 cycles, and this result shows the great application prospect of ACNTs for supercapacitors.

中文翻译：

通过简单且低成本的蒸汽活化制备超级电容器用竹类多孔碳纳米管

如何制备具有适合超级电容器结构的多孔碳是一个巨大的挑战。通常，活化是获得多孔碳的最简单方法。通过在800°C的蒸汽中简单活化磺化的聚合物纳米管，即可制得多孔竹状CNT。与未活化的碳纳米管相比，活化碳纳米管（ACNT）具有良好的管状结构，较大的比表面积和丰富的孔隙度，这要归功于活化过程中的蒸汽保护。的定向碳纳米管电极，用于超级电容器的显示器276 F G的比容量^-1 1 A G ^-1。当将ACNTs组装成对称的超级电容器时，在10 000次循环后，器件的比容量可以保持98％，这一结果表明了ACNTs在超级电容器中的巨大应用前景。

更新日期：2020-07-06

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