Environmental moisture, a ubiquitous and renewable resource, presents a promising avenue for green and sustainable power generation. Current moisture-enabled electric generators (MEGs) often exhibit low per-unit current output. Our study introduces a high-current, bendable, and tunable MEG. At 90% relative humidity, our MEG unit achieves a current density of 0.625 mA cm⁻², significantly surpassing previous MEGs by an order of magnitude. It also maintains 90% electric performance after one month, with a stable power output above 3 W m⁻². We have streamlined the fabrication process by directly coating a functional layer on flexible printed circuit boards (FPCB), enhancing the feasibility of industrial production. Furthermore, we demonstrate a low-power, wearable, wireless acceleration/strain monitoring system that operates exclusively on ambient humidity or human sweat with a reliable sampling frequency of 100 Hz. This device, with its simplicity, flexibility, electrical tunability, and superior current density, opens new avenues in sustainable energy, especially for wearable electronics.

中文翻译：

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用于无线可穿戴电子产品的高电流、可调湿气发电机


环境水分是一种普遍存在的可再生资源，为绿色和可持续发电提供了一条有前途的途径。目前的湿气发电机 (MEG) 通常表现出较低的单位电流输出。我们的研究介绍了一种高电流、可弯曲且可调谐的 MEG。在相对湿度为 90% 时，我们的 MEG 装置可实现 0.625 mA cm ^-2的电流密度，明显超过之前的 MEG 一个数量级。一个月后电性能仍保持90%，功率输出稳定在3 W m ^-2以上。我们通过直接在柔性印刷电路板（FPCB）上涂覆功能层来简化制造工艺，提高了工业生产的可行性。此外，我们还展示了一种低功耗、可穿戴、无线加速度/应变监测系统，该系统专门针对环境湿度或人体汗液运行，可靠的采样频率为 100 Hz。该器件凭借其简单性、灵活性、电气可调性和卓越的电流密度，开辟了可持续能源的新途径，特别是对于可穿戴电子产品。