Here, we present a fully biodegradable triboelectric nanogenerator (BD-TENG) based on gelatin film and electrospun polylactic acid nanofiber membrane. By optimizing the material properties of the gelatin and PLA polymer films, an output voltage up to 500 V, a short circuit current density of 10.6 mA/m² and a maximum power density over 5 W/m² are achieved with a device dimension of 4 × 4 cm². Performance of the BD-TENGs using different material combinations under various test conditions are investigated and analyzed. The BD-TENGs show excellent mechanical stability and reliability upon cyclical contact for up to 15,000 times. Biodegradation experiments show that all the materials of the TENG could be degraded completely into water in about 40 days. The BD-TENGs provide a promising green micro-power source for environment monitoring, biomedical implants through harvesting energy from wind, heart motion et al., yet they can dissolve with no adverse effect to environment or human body.

在这里，我们提出了一种基于明胶膜和电纺聚乳酸纳米纤维膜的完全可生物降解的摩擦电纳米发生器（BD-TENG）。通过优化明胶和PLA聚合物薄膜的材料性能，在器件尺寸为的情况下，可实现高达500 V的输出电压，10.6 mA / m ^2的短路电流密度和5 W / m ²的最大功率密度。 4×4厘米²。对在不同测试条件下使用不同材料组合的BD-TENG的性能进行了研究和分析。BD-TENG在循环接触时表现出出色的机械稳定性和可靠性，可达15,000次。生物降解实验表明，TENG的所有材料都可以在约40天之内完全降解为水。BD-TENGs提供了一种有前途的绿色微动力源，用于环境监测，通过从风，心动等方面收集能量来进行生物医学植入，但是它们可以溶解而不会对环境或人体造成不利影响。