Bio-inspired sandwich-structured all-day-round solar evaporator for synergistic clean water and electricity generation
发布时间：2023-10-22
点击次数：
- 论文类型：
- 期刊论文
- 第一作者：
- Ran Niu
- 通讯作者：
- Jiang Gong,Jiakang Min
- 合写作者：
- Jiaxin Ren,J. Justin Koh,Ling Chen,Jinping Qu,Xiaodong Xu,Jalal Azadmanjiri
- 发表刊物：
- Advanced Energy Materials
- 收录刊物：
- SCI、EI
- 学科门类：
- 工学
- 一级学科：
- 材料科学与工程
- 文献类型：
- J
- 发表时间：
- 2023-10-16
- 影响因子：
- 27.8
- 摘要：
- The integration of solar-driven interfacial evaporation and electricity co-generation is considered a promising approach to simultaneously alleviate freshwater scarcity and the energy crisis. However, affected by intermittent solar irradiation/uncontrollable weather, the overall performance of solar-driven evaporation in the real world is greatly reduced. Herein, inspired by antifreeze proteins in beetles that survive in extreme climates, all-weather solar-driven interfacial evaporators with a sandwich structure are designed. The top and bottom layers composed of MnO2-modified cotton cloth are used for photothermal conversion and water transport, meanwhile, the middle layer made of a phase change microcapsule/hydrogel composite serves for heat storage and release. Under 1 kW m−2 irradiation, the evaporator exhibits a high evaporation rate of 2.67 kg m−2 h−1 and an efficiency of 89.5%. In the dark, the heat released from the phase change layer supports an evaporation rate of 0.43 kg m−2 h−1, 3.6 times that of pure water. Additionally, assembled with a thermoelectric module, the hybrid device achieves a stable output electricity power of 0.42 W m−2 under 1-sun illumination and a prolonged output for 30 min in the dark. This work provides a novel approach for full-time solar-powered steam-electricity co-generation and a proof of concept for biomimetic steam generation/heat management integration.