Nature of Power Generation and Output Optimization Criteria for Triboelectric Nanogenerators
Nature of Power Generation and Output Optimization Criteria for Triboelectric Nanogenerators
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DOI：
10.1002/aenm.201802190
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发表时间：
2018-11-05
影响因子：
27.8
通讯作者：
Silva, S. Ravi P.
中科院分区：
文献类型：
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作者：
Dharmasena, R. D. Ishara G.;Deane, Jonathan H. B.;Silva, S. Ravi P.
摩擦纳米发电机 (TENG) 处于下一代能量收集技术的前沿，已被证明是能量收集和自供电传感领域众多应用的领先候选者。然而，影响 TENG 输出行为的关键参数及其优化尚不清楚。在此，通过大力分析 TENG 的阻抗行为作为激励源和器件参数的函数，首次全面揭示了 TENG 的功率输出特性。在本文中，诺顿定理首次于 1926 年针对两端线性电气网络提出，现已扩展到表示 TENG，从而可以通过小信号分析准确地可视化其动态功率输出行为。引入 TENG 阻抗图是为了准确确定给定设计的峰值功率点，这对于理解和改进 TENG 至关重要。对这些变化的经验理解有助于为未来应用设计和构建更高效的 TENG 设备。
Triboelectric nanogenerators (TENGs) are in the forefront of next-generation energy harvesting technologies, having been demonstrated as a leading candidate for numerous applications in energy harvesting and self-powered sensing. However, critical parameters affecting TENG output behavior and their optimization are not well understood. Herein, for the first time, the power output characteristics of TENGs are fully unveiled by vigorously analyzing their impedance behavior as a function of excitation source and device parameters. In this paper, Norton's theorem, first presented in 1926 for two terminal linear electrical networks, is extended to represent TENGs, allowing accurate visualization of their dynamic power output behavior via small signal analysis. TENG impedance plots are introduced to accurately determine the peak power point of a given design, which holds paramount importance in understanding and improving TENGs. The knowledge with empirical understanding for these variations results in the design and construction of more efficient TENG devices for future applications.