Energy and the environment are two of the main issues facing the world today. As a consequence abundant renewable green energy sources such as wave energy, have become hot topics. Here, a multiple‐frequency triboelectric nanogenerator based on the water balloon (WB‐TENG) is proposed for harvesting water wave energy in any direction. Owing to the high elasticity of the water balloon, the WB‐TENG can realize a multiple‐frequency response to low‐frequency external mechanical simulations to generate high‐frequency electrical output. In addition, the water balloon can achieve self‐support without any additional supporting structure because of its tension, to make WB‐TENG still produce electrical output under slight vibration, which can also bring high energy conversion efficiency. Moreover, the fabricated WB‐TENG generates a maximum instantaneous short‐circuit current and an open‐circuit voltage of 147 µA and 1221 V, respectively. Most noteworthy, under the same conditions, the total transferred charge of WB‐TENG is 28 times than that of traditional TENG based on double plate structure during one working cycle. Therefore, this design can provide an effective way to promote the development of TENGs in blue energy.

中文翻译：

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基于水囊的全频高输出摩擦电纳米发电机，用于全天候水波能量收集

能源和环境是当今世界面临的两个主要问题。因此，丰富的可再生绿色能源（例如波浪能）已成为热门话题。在此，提出了一种基于水气球的多频摩擦电纳米发电机（WB-TENG），用于收集任何方向的水波能量。由于水囊的高弹性，WB‐TENG可以实现对低频外部机械模拟的多频响应，从而产生高频电输出。此外，由于其张力，水囊无需任何额外的支撑结构即可实现自支撑，从而使WB-TENG在轻微振动下仍能产生电输出，这也可以带来很高的能量转换效率。此外，装配好的WB-TENG产生的最大瞬时短路电流和开路电压分别为147 µA和1221V。最值得注意的是，在相同条件下，WB-TENG的总转移电荷是一个工作循环中基于双板结构的传统TENG的总转移电荷的28倍。因此，该设计可以为促进蓝色能源中腾格的发展提供有效途径。