Fully Printable Manufacturing of Miniaturized, Highly Integrated, Flexible Evaporation-Driven Electricity Generator Arrays

IF 14.3 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Qun Liu, Panwang Guo, Xinyu Zhang, Hehe Ren, Jing Liang, Quancai Li, Weinan Tang, Wei Wu
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Abstract

Harvesting sustainable clean energy from natural water evaporation holds great promise to provide continuous power for portable and wearable electronics. However, poor portability and complex fabrication processes hinder the low-cost and large-scale integration of flexible evaporation-driven electricity generators (FEEGs). Herein, a fully-printed flexible evaporation-driven generator (PFEEG) is developed. Utilizing custom-formulated functional inks, the asymmetric structures, current collectors, and hygroscopic water storage units can be manufactured by a patternable, scalable, and layer-by-layer deposition technique of screen printing. Thus, a PFEEG unit (0.5 cm × 1 cm × 38 µm) can generate a voltage of ≈0.8 V over a wide relative humidity (RH) range from 20% to 90%, and a maximum power density of 1.55 µW cm−2 at 70% RH. An array of 200 PFEEGs connected in series or parallel can produce voltages up to 152.41 V or a current up to 1.02 mA. Furthermore, the scalable PFEEG array can not only be seamlessly connected with the printed flexible circuit but can also be integrated with a humidity sensor and display arrays to form a self-powered printed flexible sensing system. This work presents a practical strategy for continuous power supply of portable and wearable electronics.

Abstract Image

小型化、高度集成、柔性蒸发驱动发电机阵列的完全可打印制造。
从自然蒸发的水中收集可持续的清洁能源,为便携式和可穿戴电子产品提供持续的动力,前景广阔。然而,便携性差和制造工艺复杂阻碍了柔性蒸发驱动发电机(FEEGs)的低成本和大规模集成。本文研制了一种全打印柔性蒸发驱动发电机(PFEEG)。利用定制配方的功能性油墨,非对称结构、电流收集器和吸湿性储水单元可以通过可定图化、可扩展和逐层沉积的丝网印刷技术来制造。因此,PFEEG单元(0.5 cm × 1cm × 38µm)在20% ~ 90%的相对湿度(RH)范围内可以产生≈0.8 V的电压,在70% RH下可以产生1.55µW cm-2的最大功率密度。一个由200个pfeg串联或并联的阵列可以产生高达152.41 V的电压或高达1.02 mA的电流。此外,可扩展的PFEEG阵列不仅可以与印刷柔性电路无缝连接,还可以与湿度传感器和显示阵列集成,形成自供电的印刷柔性传感系统。本文提出了一种实用的便携式和可穿戴电子设备连续供电策略。
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来源期刊
Advanced Science
Advanced Science CHEMISTRY, MULTIDISCIPLINARYNANOSCIENCE &-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
18.90
自引率
2.60%
发文量
1602
审稿时长
1.9 months
期刊介绍: Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.
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