Wu Ke, Yang Wenjie, Guo Lulu, Yang Zhimin, Jiao Mingzhi
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, P. R. China.
School of Life Science and Technology, Shandong Second Medical University, Weifang, 261053, P. R. China.
Small. 2024 Nov;20(47):e2404160. doi: 10.1002/smll.202404160. Epub 2024 Aug 23.
Dual-mode humidity sensors have received wide attention in recent years due to their great potential in multifunction applications. Herein, following a "two birds with one stone" strategy, a dual-mode and self-powered low humidity sensor based on LiBr-MOF-801 with high response and power generation is proposed. The optimized LiBr-MOF-801-based sensor exhibits impedance-voltage dual-mode sensitivity in the low humidity range of 0-23% relative humidity (RH) with high response (57.1 and 0.61 V), small hysteresis (0.3% RH) and good long-term stability at room temperature (20 °C). Moreover, an integrated humidity power generator is obtained by series connection of the self-powered humidity sensor within 15 cm, and the output voltage reaches 2.6 V with an output power density of 110 nW cm, and can be used as energy, supplying power to commercial electronic equipment even in low humidity. This work provides a new sight for fabricating high-performance, dual-mode, and self-powered low-humidity sensors.
近年来，双模湿度传感器因其在多功能应用中的巨大潜力而受到广泛关注。在此，遵循“一石二鸟”策略，提出了一种基于LiBr-MOF-801的具有高响应和发电功能的双模自供电低湿度传感器。优化后的基于LiBr-MOF-801的传感器在0-23%相对湿度（RH）的低湿度范围内表现出阻抗-电压双模灵敏度，具有高响应（57.1和0.61 V）、小滞后（0.3%RH）以及在室温（20°C）下良好的长期稳定性。此外，通过在15 cm内串联自供电湿度传感器获得了集成湿度发电机，输出电压达到2.6 V，输出功率密度为110 nW/cm²，并且即使在低湿度环境下也可作为能源为商用电子设备供电。这项工作为制造高性能、双模和自供电的低湿度传感器提供了新的视角。
