School of Light Industry and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Wushan Rd., 381#, Tianhe District, Guangzhou, Guangdong, 510640, China.
Adv Sci (Weinh). 2023 Mar;10(9):e2206483. doi: 10.1002/advs.202206483. Epub 2023 Jan 22.
The conversion of ubiquitous hygrothermal resources into renewable energy offers significant potential for cable-free, self-powered systems that can operate worldwide without regard to climatic or geographic limitations. Here, an all-printed flexible hygro-thermoelectric paper generator is demonstrated that uses bifunctional mobile ions and electrons to make the moist-diffusion effect, the Soret effect, and the Seebeck effect work synergistically. In the ordinary hygrothermal settings, it generates an unconventional hygro-thermoelectric output pattern and shows almost a dozen-fold increase in positive hygro-thermopower of 26.70 mV K and also another negative hygro-thermopower of -15.71 mV K compared to pure thermopower. A single paper generator can produce a giant 680 mV displaying typical cyclic sinusoidal waveform characters with volt-sized amplitudes. The ion-electron conductive ink is easily printable and consists primarily of a Bi Te /PEDOT:PSS thermoelectric matrix modulated with a hygroscopic glycerol that releases ion charges for moist-diffusion effect and Soret effect, as well as electron charges for Seebeck effect. The emerged hygro-thermoelectric harvesting strategy from surrounding hygrothermal resources offers a revolutionary approach to the next generation of hybrid energy with cost-efficiency, flexibility, and sustainability, and also enables large-scale roll-to-roll production.
将无处不在的湿热资源转化为可再生能源，为无需电缆、自供电的系统提供了巨大的潜力，这些系统可以在全球范围内运行，而不受气候或地理限制的影响。在这里，展示了一种全印刷的柔性湿热电纸发电机，它利用双功能移动离子和电子使湿扩散效应、索雷特效应和塞贝克效应协同工作。在普通的湿热环境下，它产生了一种非传统的湿热电输出模式，与纯热电相比，正湿热电势增加了近 12 倍，达到 26.70 mV K，负湿热电势也增加了 15.71 mV K。单个纸发电机可以产生 680 mV 的巨大电压，显示出典型的循环正弦波特征，幅度为伏特级。离子-电子导电油墨易于印刷，主要由 Bi Te/PEDOT:PSS 热电矩阵调制而成，其中含有吸湿甘油，用于湿扩散效应和索雷特效应释放离子电荷，并用于塞贝克效应释放电子电荷。这种从周围湿热资源中收集湿热电的新兴策略为下一代混合能源提供了一种具有成本效益、灵活性和可持续性的革命性方法，也能够实现大规模的卷对卷生产。
