Wang Haiyan, He Tiancheng, Hao Xuanzhang, Huang Yaxin, Yao Houze, Liu Feng, Cheng Huhu, Qu Liangti
Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
Nat Commun. 2022 May 9;13(1):2524. doi: 10.1038/s41467-022-30156-3.
Environment-adaptive power generation can play an important role in next-generation energy conversion. Herein, we propose a moisture adsorption-desorption power generator (MADG) based on porous ionizable assembly, which spontaneously adsorbs moisture at high RH and desorbs moisture at low RH, thus leading to cyclic electric output. A MADG unit can generate a high voltage of 0.5 V and a current of 100 μA at 100% relative humidity (RH), delivers an electric output (0.5 V and ~50 μA) at 15 ± 5% RH, and offers a maximum output power density approaching to 120 mW m. Such MADG devices could conduct enough power to illuminate a road lamp in outdoor application and directly drive electrochemical process. This work affords a closed-loop pathway for versatile moisture-based energy conversion.
环境自适应发电在下一代能量转换中可发挥重要作用。在此，我们提出一种基于多孔可电离组件的吸湿-解吸发电机（MADG），它在高相对湿度（RH）下自发吸附水分，在低相对湿度下解吸水分，从而产生循环电输出。一个MADG单元在100%相对湿度（RH）下可产生约0.5 V的高电压和100 μA的电流，在15±5% RH下提供电输出（约0.5 V和约50 μA），并提供接近120 mW m的最大输出功率密度。这种MADG装置在户外应用中可为路灯供电，并直接驱动电化学过程。这项工作为基于水分的通用能量转换提供了一条闭环途径。
