High performance temperature difference triboelectric nanogenerator

作者：Bolang Cheng, Qi Xu, Yaqin Ding, Suo Bai, Xiaofeng Jia, Yangdianchen Yu, Juan Wen, Yong Qin · 发表于：Nature Communications · 年份：2021 · DOI：10.1038/s41467-021-25043-2 · 被引用次数：195 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Conducting polymers and applications、Supercapacitor Materials and Fabrication

Abstract Usually, high temperature decreases the output performance of triboelectric nanogenerator because of the dissipation of triboelectric charges through the thermionic emission. Here, a temperature difference triboelectric nanogenerator is designed and fabricated to enhance the electrical output performance in high temperature environment. As the hotter friction layer’s temperature of nanogenerator is 0 K to 145 K higher than the cooler part’s temperature, the output voltage, current, surface charge density and output power are increased 2.7, 2.2, 3.0 and 2.9 times, respectively (from 315 V, 9.1 μA, 19.6 μC m −2 , 69 μW to 858 V, 20 μA, 58.8 μC m −2 , 206.7 μW). With the further increase of temperature difference from 145 K to 219 K, the surface charge density and output performance gradually decrease. At the optimal temperature difference (145 K), the largest output current density is 443 μA cm −2 , which is 26.6% larger than the reported record value (350 μA cm −2 ).