Thin niobium and iron–graphene oxide composite metal–organic framework electrodes for high performance supercapacitors,New Journal of Chemistry

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Thin niobium and iron–graphene oxide composite metal–organic framework electrodes for high performance supercapacitors
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-07-02 , DOI: 10.1039/d0nj02793f
T. Eswaramoorthi _{1,

2,

3,

4,

5} , S. Ganesan _{1,

2,

3,

4,

5} , M. Marimuthu _{1,

2,

3,

4,

5} , K. Santhosh _{1,

2,

3,

4,

5}

Affiliation

A new composite NbOF–GO and FeOF–GO electrode material was synthesized by the screw-capped pressure tube method for a supercapacitor with specific capacitance values of 599 and 459 F g⁻¹ at current densities of 0.5 and 0.2 A g⁻¹. The NbOF–GO electrode has excellent cycling stability (capacitance retention of 88% after 5500 cycles at a current density of 5 A g⁻¹), possesses a cubic morphology and excellent surface area, and it improves the number of ions near the surface area for charge storage, in addition to shortening the ion distance over a thin dimension and it is reported to have excessive specific capacitance. The synthesized asymmetric supercapacitor (ASC) device produces a maximum voltage of up to 1.2 V, a high specific energy of 51 W h kg⁻¹ and a specific power of 1496 W kg⁻¹, with an excellent cycling lifespan of only 2% capacitance loss after 10 000 cycles.

中文翻译：

高性能超级电容器用薄薄的铌和铁-氧化石墨烯复合金属-有机骨架电极

一个新的复合NbOF-GO和FEOF-GO电极材料是由螺旋盖压力管方法对于具有599和459 F G特定电容值的超级电容器合成^-1在0.5和0.2 A克电流密度^-1。NbOF–GO电极具有出色的循环稳定性（在5 A g ^-1的电流密度下，经过5500次循环后电容保持率达88％），具有立方形态和出色的表面积，并改善了表面积附近的离子数量除了在薄尺寸上缩短离子距离外，还用于电荷存储，据报道它具有过大的比电容。合成的非对称超级电容器（ASC）器件产生的最大电压高达1.2 V，比能量为51 W h kg^-1和1496 W kg^-1的比功率，在1万次循环后具有极佳的循环寿命，电容损耗仅为2％。

更新日期：2020-07-27

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