能量收集
微电子
功勋
电压
电气工程
能量(信号处理)
电子工程
功率(物理)
工程类
计算机科学
材料科学
光电子学
物理
量子力学
作者
Juliane Irine Preimesberger,Sun-Kyung Kang,Craig B. Arnold
出处
期刊:Joule
[Elsevier]
日期:2020-09-01
卷期号:4 (9): 1893-1906
被引量:18
标识
DOI:10.1016/j.joule.2020.07.019
摘要
Mechanical micro-energy harvesting is a promising technology that could provide energy to small-scale sensors and other microelectronics without the need for traditional power sources. One such mechanism, called the piezoelectrochemical (PEC) effect, is of particular interest because many PEC systems have higher theoretical energy densities than other mechanical energy harvesters. This energy-harvesting mechanism has been demonstrated in multiple systems, including commonly used electrodes for lithium-ion batteries. However, due to the large variety of materials, it is difficult to consistently compare the utility of PEC systems, which makes the selection and optimization of PEC energy harvesters challenging. Here, we propose using figures of merit including short-circuit current (ΔISC), open-circuit voltage (ΔVOC),fill factor (FF), and efficiency (ηEC), which provide a unifying scheme to quantify the performance of different PEC systems. We experimentally validate this approach and demonstrate ways to increase voltage and current outputs of these harvesters.
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