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hmsun7828

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注册: 2008-10-22
专业: 生化分析及生物传感

[求助] 关于超级电容器的比电容

刚接触超级电容器，很多知识和概念都不太理解。在看文献时遇到点困难，就想下面这段文章。作者是在强调FGC-modified gold electrode有较高的比电容，明明是最大88 F g-1，可是graphene (135 F g1)，作者的FGC-modified gold electrode怎么会比前人报道的多呢？请高手指教，不胜感激。。。。。

原文如下：

The specific capacitances can be calculated from the CV curves (Fig. 5a, b).
Compared to the case of a bare gold electrode (327 mF cm2 at
0.25 V), a higher (about 149 times) double layer capacitance
(48844 mF cm2, 85 F g1) was obtained from the FGC-modified gold
electrode at 0.25 V. However, when the gold electrode was
modified by only graphene sheets or only Fe3O4 NCs, we observe
much lower capacitance values than that of the gold electrode
modified with FGC (Fig. 5a). Furthermore, a higher (about 160
times that of a bare gold electrode) double layer capacitance
(50867 mF cm2, 88 F g1) of the FGC-modified gold electrode
was obtained at 0.30 V (Figure S5†

. The specific capacitances
calculated from the CVs of the FGC modified electrode reported
here exceeded those of graphene (135 F g1) and carbon
materials (65 F g1)7in the literature。

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