Robust reverse-electrowetting based energy harvesting on slippery surface,RSC Advances

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Robust reverse-electrowetting based energy harvesting on slippery surface
RSC Advances ( IF 3.9 ) Pub Date : 2023-10-30 , DOI: 10.1039/d3ra06099c
Haimei Cheng _{1,

2} , Wan Shao _{1,

2} , Jing Jin _{1,

2} , Junjun Wu _{1,

2} , Manhong Zhao _{1,

2} , Biao Tang _{1,

2} , Guofu Zhou _{1,

2,

3}

Affiliation

Reversed-electrowetting based droplet electricity generator (REWOD-DEG) shows merits in high power densities, tunable output formats, and wide adaptability to diverse mechanical energies. However, the surface charge trapping and dielectric failure, which are also common challenges for electrowetting system, hinders the development of reliable REWOD-DEGs for long-term running. We innovatively introduce a slippery lubricant-infused porous surface (SLIPS) into REWOD-DEG. Benefits from the significant inhibitory effect for surface charge trapping and ambient contamination, self-healing characteristic given by SLIPS, and robust reversed-electrowetting based energy harvesting were achieved. The SLIPS enhanced REWOD-DEG experienced 100 days of intermittent energy harvesting without deterioration. In addition, the device shows robust performances when exposed to a variety of extreme working conditions, like low temperature, pH, humidity, fouling, and even scratching. This work may address the core application challenges of REWOD based devices, and inspire the development of other robust droplet-based electricity generators.

中文翻译：

光滑表面上基于鲁棒反向电润湿的能量收集

基于反向电润湿的液滴发电机（REWOD-DEG）具有功率密度高、输出格式可调和对不同机械能的广泛适应性等优点。然而，表面电荷捕获和介电故障也是电润湿系统面临的常见挑战，阻碍了长期运行的可靠 REWOD-DEG 的开发。我们创新地将光滑的注入润滑剂的多孔表面 (SLIPS) 引入 REWOD-DEG。得益于对表面电荷捕获和环境污染的显着抑制作用、SLIPS 提供的自愈特性以及基于反向电润湿的强大能量收集。SLIPS 增强型 REWOD-DEG 经历了 100 天的间歇性能量收集而没有恶化。此外，该设备在暴露于各种极端工作条件（如低温、pH、湿度、污垢甚至刮擦）时表现出强大的性能。这项工作可能会解决基于 REWOD 的设备的核心应用挑战，并激发其他强大的基于液滴的发电机的开发。

更新日期：2023-10-31

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