Microsupercapacitors (MSCs) are recognized as suitable energy storage devices for the internet of things (IoTs) applications. Herein is described the work conducted to assess the areal energy and power densities of MSCs with 2, 10, 20, and 40 interdigital finger electrodes on a fixed device footprint area (the finger interspacing is fixed at 40 μm, and the finger width and length are allowed to vary to fit the footprint area). The MSCs are based on reduced graphene oxide (rGO) materials and fabricated with a spin‐coating and etch method. The performance evaluation indicates a strong dependency of areal capacitance and energy density on the number of fingers, and the maximum (impedance match) power density is also influenced to a relatively large extent, whereas the average power density is not sensitive to the configuration parameters in the present evaluation settings (scan rate 20–200 mV s⁻¹ and current density of 100 μA cm⁻²). For the rGO‐based devices, the equivalent distributed resistance may play an important role in determining the device resistance and power‐related performance.

中文翻译：

---

手指数量和设备性能：还原氧化石墨烯微超级电容器的案例研究

微型超级电容器（MSC）被公认为是物联网（IoT）应用程序的合适储能设备。本文描述了为评估在固定设备覆盖区域（手指的间距固定为40μm，手指的宽度和长度）上具有2、10、20和40个叉指电极的MSC的面能量和功率密度而进行的工作。允许更改以适合占地面积）。MSC基于还原的氧化石墨烯（rGO）材料，并采用旋涂和蚀刻方法制造。性能评估表明，面积电容和能量密度对手指数量的依赖性很强，并且最大（阻抗匹配）功率密度也受到较大影响，^-1和100μAcm ^-2的电流密度）。对于基于rGO的设备，等效的分布电阻可能在确定设备电阻和与电源相关的性能中起重要作用。