For the past few years, triboelectric nanogenerators (TENGs) have been demonstrated as an unprecedented method as self-powered, power generation and blue energy. The materials and electrodes used to fabricate TENGs are usually polymer materials and metals. The article demonstrates a new TENG that use entirely bio- and environmental degradable materials. The basic ingredients of the TENG are wheat bread and vegetable leaves for fabricating a sandwich structured TENG (S-TENG). The maximum voltage and current of this S-TENG can reach about 15 V and 3 μA, respectively, when it works in the single electrode mode under the optimal conditions. Additionally, the effects of linear motor frequency, different triboelectric layers, and the area of triboelectric layers on the output of S-TENG were investigated in this work. Several application experiments have confirmed that the S-TENG is capable of driving commercial LED and initiating an alarm apparatus. This work provides a new prospect for the extensiveness of power objects and proves the potential of natural materials applied to the aspect of environmental-friendly power sources and harvesting the green energy.

在过去的几年中，摩擦电纳米发电机（TENGs）已被证明是一种前所未有的方法，例如自供电，发电和蓝色能源。用于制造TENG的材料和电极通常是聚合物材料和金属。本文演示了一种完全使用可生物降解和可环境降解的材料的新型TENG。TENG的基本成分是小麦面包和蔬菜叶，用于制造三明治结构的TENG（S-TENG）。当S-TENG在最佳条件下以单电极模式工作时，其最大电压和电流分别可以达到约15 V和3μA。此外，这项工作还研究了线性电动机频率，不同的摩擦电学层以及摩擦电学层的面积对S-TENG输出的影响。几个应用实验已经证实S-TENG能够驱动商用LED并启动警报设备。这项工作为动力对象的广泛应用提供了新的前景，并证明了天然材料在环境友好型能源和绿色能源采集方面的潜力。