Study on friction-electrification coupling in sliding-mode triboelectric nanogenerator
Study on friction-electrification coupling in sliding-mode triboelectric nanogenerator
复制标题
DOI：
10.1016/j.nanoen.2018.04.007
复制
发表时间：
2018-06-01
期刊：
影响因子：
17.6
通讯作者：
Wang, Pengfei
中科院分区：
文献类型：
--
作者：
Zhang, Weiqiang;Diao, Dongfeng;Wang, Pengfei
摩擦电纳米发电机（TENG）被认为是一种革命性的低成本清洁能源技术。本文设计了基于石墨烯片嵌入碳（GSEC）和非晶碳（a-C）薄膜的滑动模式TENG，并研究了其摩擦-带电耦合特性。GSEC和a-C薄膜是在电子回旋共振（ECR）等离子体系统中通过电子辐照辅助物理气相沉积制备的。为研究滑模变结构TENG的摩擦-带电耦合特性，设计并搭建了一套能够同时测量摩擦力、输出电压和输出电流的新型试验平台。在GSEC和a-C膜相对于聚四氟乙烯（PTFE）膜滑动的情况下，基于GSEC膜的TENG的开路输出电压、短路输出电流密度、峰值功率密度和最大瞬时能量转换效率分别为13.5V、0.35 μ A/cm（2）、0.63 mW/cm（2）和8.61%，基于GSEC膜的TENG的开路输出电压、短路输出电流密度、峰值功率密度和最大瞬时能量转换效率分别为8.5V、0.35 μ A/cm（2）、0.63 mW/cm（2）和8.61%。对于a-C膜基TENG，分别为0.24 μ A/cm（2）、0.5 mW/cm（2）和7.71%。结果表明，GSEC薄膜具有比a-C薄膜更高的电输出性能。基于GSEC膜的TENG的高电输出性能的起源归因于石墨烯片的边缘和沟道效应。这些研究结果为碳膜在摩擦纳米能源领域的应用提供了参考。
Triboelectric nanogenerator (TENG) is regarded as a revolutionary technology for harvesting clean and sustainable energy with low cost. Here, sliding-mode TENGs based on both graphene sheets embedded carbon (GSEC) and amorphous carbon (a-C) films were designed and their friction-electrification coupling properties were studied. The GSEC and a-C films were fabricated by electron irradiation assisted physical vapor deposition in an electron cyclotron resonance (ECR) plasma system. A novel testing platform that can simultaneously measure friction force, output voltage and output current was designed and assembled for studying the friction-electrification coupling of sliding-mode TENG. In the case of GSEC and a-C films slid against Polytetrafluoroethylene (PTFE) film, the open-circuit output voltage, the short-circuit output current density, the peak power density and the maximum instantaneous energy conversion efficiency were 13.5 V, 0.35 mu A/cm(2), 0.63 mW/cm(2) and 8.61% for the GSEC film based TENG, and 8.5 V, 0.24 mu A/cm(2), 0.5 mW/cm(2) and 7.71% for the a-C film based TENG, respectively. The results implied that the GSEC film exhibited a higher electric output performance compared with the a-C film. The origin of high electric output performance of the GSEC film based TENG was ascribed to the edge and channel effects of graphene sheets. These findings shed light on the application of carbon films in friction-induced nanoenergy field.