Ubiquitous moisture is of particular attraction for sustainable power generation. However, rigorous assembly procedures limit the efficient large-scale integration for moisture-enabled electric generators (MEGs). Herein, we develop fully printed planar MEG (PMEG) arrays using modulated polycation and polyanion inks, which maximize access to moisture and make it free of strict assembly and device packaging. Thus, a PMEG unit (only 0.3 cm²) generates an open-circuit voltage of up to 1.1 V, along with a power density of 2.6 μW cm⁻². A small piece of sheet with 200 PMEG units offers a maximum voltage of 200 V and a current of 1.3 mA. A standard power module is constructed to meet the on-demand power supply requirements of compact electronics. Furthermore, scalable and customizable PMEG arrays can be compatibly integrated with flexible circuits, as demonstrated by a fully printed self-powered functional system including PMEG arrays and energy-storage and electrochromic devices.

无处不在的水分对可持续发电具有特别的吸引力。然而，严格的组装程序限制了湿气发电机 (MEG) 的高效大规模集成。在此，我们使用调制的聚阳离子和聚阴离子油墨开发全印刷平面 MEG (PMEG) 阵列，可最大限度地获取水分并使其免于严格的组装和设备包装。因此，PMEG 单元（仅 0.3 cm ²）可产生高达 1.1 V 的开路电压以及 2.6 μW cm ^{−2的功率密度}. 一小块带有 200 个 PMEG 单元的薄片可提供 200 V 的最大电压和 1.3 mA 的电流。构建标准电源模块以满足紧凑型电子产品的按需供电要求。此外，可扩展和可定制的 PMEG 阵列可以与柔性电路兼容集成，如包括 PMEG 阵列、储能和电致变色设备在内的全印刷自供电功能系统所证明的那样。