Simultaneous Solar-driven Steam and Electricity Generation by Cost-effective, Easy-scale up MnO2-based Flexible Membranes
作者：Jiaxin Ren, Yang Ding, Jiang Gong*, Jinping Qu, Ran Niu*
關鍵字：Solar-driven Steam, Electricity Generation
論文來源：期刊
具體來源：Energy & Environmental Materials
發表時間：2022年
Harvesting solar energy in an effective manner for steam and electricity generation is a promising technique to simultaneously cope with energy and water crises. However, construction of efficient and easy-scale up photothermal materials for steam and electricity cogeneration remains challenging. Herein, we report a facile and cost-effective strategy to prepare MnO2-decorated cotton cloth (MCx). The wide adsorption spectrum and excellent photothermal conversion ability of the in-situ formed MnO2 nanoparticles make the MCx to be advanced photothermal materials. Consequently, the hybrid device integrated of MCx as the photothermal layer and the thermoelectric (TE) module for electricity power conversion exhibits an extremely high evaporation rate of 2.24 kg m-2 h-1 under 1 kW m-2 irradiation, which is ranked among the most powerful solar evaporators. More importantly, during solar evaporation, the hybrid device produces an open-circuit voltage of 0.3 V and a power output of 1.6 W m-2 under 3 Sun irradiation, and outperforms most of previously reported solar-driven electricity generation devices. Therefore, the integrated device with synergistic solar-thermal utilization opens up a green way towards simultaneous solar vapor and electricity power generation in remote and resource constrained areas.