Wind energy harvester based on coaxial rotatory freestanding triboelectric nanogenerators for self-powered water splitting
Wind energy harvester based on coaxial rotatory freestanding triboelectric nanogenerators for self-powered water splitting
复制标题
基于同轴旋转独立式摩擦纳米发电机的自供电水分解风能采集器
DOI：
10.1016/j.nanoen.2018.06.002
复制
发表时间：
2018-08-01
期刊：
影响因子：
17.6
通讯作者：
Wang, Weijia
中科院分区：
文献类型：
--
作者：
Ren, Xiaohu;Fan, Huiqing;Wang, Weijia
电解水是一种环境友好的制氢(H-2)方法。电解时，必须配备外部电源来驱动H2O分子的氧化或还原反应。从我们的生活环境中收集能量用于电解水分解是一种成本效益高的大规模生产H-2的技术。介绍了一种以PVDF纳米纤维膜为摩擦电材料的同轴旋转式独立式摩擦电纳米发电机(CRF-TENG)风能收集器。在此基础上，提出了一种基于CRF-TENG的全自力式制氢水裂解系统。通过清除周围的风能，所产生的电力被用来分解水来生产H-2，而不是外部电源。用气体循环系统和气相色谱仪测定了氢气的生成量，并计算了氢气的析出速率。当风速为10米/S时，1M氢氧化钾溶液中的产氢速率达到6.9685亩L/分钟，为环境机械能转化为氢能提供了一条容易放大和高效的途径。这种自给式分水系统为更多的能源应用开辟了一条新的道路。
Electrolysis of water is utilized as an environment friendly approach for production of hydrogen (H-2). An external power supply for driving the oxidation or reduction reactions of H2O molecules is mandatory for electrolysis. Harvesting energy from our living environment for electrolytic water splitting is a cost-effective technology for mass production of H-2. Here, a coaxial rotatory freestanding triboelectric nanogenerator (CRF-TENG) wind energy harvester was demonstrated, in which the electrospinning PVDF nanofibrous membrane served as triboelectric material. And then a fully self-powered water splitting system for hydrogen production was presented based on the CRF-TENG. By scavenging ambient wind energy, the generated electricity is used for water splitting to produce H-2, instead of the external power source. The amounts of H-2 were measured by a gas circulation system and gas chromatograph and the H-2 evolution rates were calculated. When the wind speed is 10 m/s, the hydrogen generation rate reaches 6.9685 mu L/min in the 1 M KOH solution, suggesting an easy scale-up and efficient route for converting ambient mechanical energy into hydrogen energy. Such self-powered water splitting system opens up a new road to more energy applications.