A rapid surge in the research on self-powered bio-electronics is occurring toward the challenge that the state-of-the-art bio-devices require obsolete bulky batteries, which limit device miniaturization and lifespan. Among them, flexible piezoelectric materials that enable mechanical-to-electrical energy conversion, stimulate tremendous attraction to harvest mechanical energy from the motions of human and organs. Here, we report a cost-effective one-step process based on unique two-dimensional mica substrates to fabricate flexible piezoelectric energy harvesters, extending beyond prior art for all-inorganic flexible piezoelectric materials. As an exemplary demonstration, an all-inorganic, large scale, flexible piezoelectric Pb(Zr_0.52Ti_0.48)O₃ energy harvester is fabricated with an outstanding performance (i.e., open-circuit voltage of 120 V, short-circuit current density of 150 μA cm⁻² and power density of 42.7 mW cm⁻³), which are comparable to those via conventional “grow-transfer” technique from rigid substrates to organic soft ribbons, and are much greater by one to four orders of magnitude than previous reported ones based on piezoelectric nanofibers and organic thick films. In particular. This unique process provides a new perspective to fabricate all-inorganic piezoelectric energy harvesters for battery-free bio-electronics.

自供电生物电子学的研究正在迅速发展，以应对最先进的生物设备需要陈旧的笨重电池的挑战，这限制了设备的小型化和使用寿命。其中，可实现机械能至电能转换的柔性压电材料，激发了巨大的吸引力，可从人体和器官的运动中收集机械能。在这里，我们报告了一种基于独特的二维云母基板的经济高效的一步法来制造柔性压电能量收集器，这超出了现有技术的全无机柔性压电材料的范围。作为示例性演示，全无机大型柔性压电Pb（Zr _0.52 Ti _0.48）O ₃能量收集器具有出色的性能（例如，开路电压为120 V，短路电流密度为150μAcm ^-2，功率密度为42.7 mW cm ^-3），与传统的“成长”技术相当。 “转移”技术从刚性基材到有机软带，比以前报道的基于压电纳米纤维和有机厚膜的技术大一到四个数量级。尤其是。这种独特的工艺为制造用于无电池生物电子的全无机压电能量收集器提供了新的视角。