Nano Energy ( IF 17.6 ) Pub Date : 2020-01-08 , DOI: 10.1016/j.nanoen.2020.104458 Seunggen Yang , Kyoungah Cho , Sangsig Kim
In this study, we demonstrate an energy device that consists of a thermoelectric generator (TEG) and a micro supercapacitor (MSC); electricity generated by the TEG is directly stored in the MSC. In this energy device, an interdigitated MSC is directly linked to a ring-patterned TEG with 80 pn modules that consist of p-Ag2Te and n-Ag2Se thin films. The ring-patterned TEG is designed for the effective use of thermal energy; a circular metal pad is added in its central area to maximize the absorption of thermal energy from a finger and from solar heat. The voltage of the MSC is rapidly raised up to 169 mV at a temperature difference of 8.6 K for the ring-patterned TEG; a volumetric energy density of 1.1 mJ/cm3 and a power density of 89.5 mW/cm3 are exhibited. In addition, our ring-patterned energy device generates and stores a voltage of 100 mV from the thermal energy of a finger with a raising rate of 0.1 V/min. Moreover, we examine the feasibility of the energy device consisting of a metal pad coated with solar-heat-absorption material when sunlight is used as the thermal energy source.
中文翻译:
手指和太阳能产生和储存电能的能量装置
在这项研究中,我们演示了一种由热电发生器(TEG)和微型超级电容器(MSC)组成的能量设备;TEG产生的电直接存储在MSC中。在这种能量装置中,一个相互交叉的MSC直接链接到具有80 pn模块的环形图案TEG,该模块由p -Ag 2 Te和n -Ag 2 Se薄膜组成。环形TEG设计用于有效利用热能。在其中心区域添加了圆形金属垫,以最大程度地吸收手指和太阳热能。对于环形图案的TEG,在8.6 K的温差下,MSC的电压迅速升高到169 mV。体积能量密度为1.1 mJ / cm如图3所示,功率密度为89.5mW / cm 3。此外,我们的环形图案能量设备会以0.1 V / min的上升速率从手指的热能生成并存储100 mV的电压。此外,我们研究了在将太阳光用作热能源时,由覆盖有太阳热吸收材料的金属垫组成的能量装置的可行性。