Exploring the theoretical and experimental optimization of high-performance triboelectric nanogenerators using microarchitectured silk cocoon films
Exploring the theoretical and experimental optimization of high-performance triboelectric nanogenerators using microarchitectured silk cocoon films
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DOI：
10.1016/j.nanoen.2020.104882
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发表时间：
2020-08-01
期刊：
影响因子：
17.6
通讯作者：
Yu, Jae Su
中科院分区：
文献类型：
--
作者：
Dudem, Bhaskar;Dharmasena, R. D. Ishara G.;Yu, Jae Su
使用环保天然材料而不是传统电子材料开发的摩擦纳米发电机（TENG）更适合生物相容性应用，并且从可持续生命周期分析的角度来看。具有高表面粗糙度和出色的失去电子能力的微结构蚕丝蛋白薄膜被用来设计 TENG。采用酒精退火处理来增强丝膜（SF）的耐湿性和水溶性。在此，首次采用距离相关电场理论模型来优化TENG参数以实现高输出，这与基于SF的TENG的实验输出表现出良好的一致性。经过酒精处理的微结构 SF (AT-MASF) 具有聚四氟乙烯正极触点，即使在恶劣的环境下也能表现出稳定和高的电力输出。这些研究可以让我们更接近实现可生物降解的 TENG 系统的诱人未来愿景，即使在真实/潮湿的环境下也能利用/感测各种生物力学活动。所提出的基于 AT-MASF 的 TENG 的潜在和实时应用通过直接利用其电力来驱动许多低功耗便携式电子设备以及用于以人体为中心的活动进行传感来展示。
Triboelectric nanogenerators (TENGs) developed using eco-friendly natural materials instead of traditional electronic materials are more favorable for biocompatible applications, as well as from a sustainable life-cycle analysis perspective. Microarchitectured silkworm fibroin films with high surface roughness and an outstanding ability to lose electrons are used to design TENGs. An alcohol-annealing treatment is utilized to strengthen the resistance of the silk film (SF) against humidity and aqueous solubility. Herein, for the first time, the distance-dependent electric field theoretical model is employed to optimize the TENG parameters to achieve high output, which shows excellent agreement with the experimental outputs of SF-based TENG. The alcohol- treated microarchitectured SF (AT-MASF) with a polytetrafluoroethylene positive contact exhibits a stable and high electrical output even in harsh environments. These studies can lead us closer to the attractive future vision of realizing biodegradable TENG systems for harness/sensing various biomechanical activities even under real/ humid environments. The potential and real-time application of the proposed AT-MASF-based TENG is demonstrated by directly employing its electric power to drive a number of low-power portable electronics and for sensing in human-body centric activities.