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Efficient Solar-osmotic Power Generation from Bioinspired Anti-fouling 2D WS2 Composite Membranes |
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| Authors: | Dr Qingchen Wang Dr Yadong Wu Dr Congcong Zhu Dr Yuhao Hu Dr Lin Fu Dr Yongchao Qian Dr Zhe-Hua Zhang Dr Tingyang Li Dr Xin Li Prof Xiang-Yu Kong Prof Lei Jiang Prof Zhen Zhang Prof Liping Wen |
| Institution: | 1. CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China;2. CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China
School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China;3. CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123 P. R. China School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China;4. School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026 P. R. China |
| Abstract: | Nanofluidic reverse electrodialysis provides an attractive way to harvest osmotic energy. However, most attention was paid to monotonous membrane structure optimization to promote selective ion transport, while the role of external fields and relevant mechanisms are rarely explored. Here, we demonstrate a Kevlar-toughened tungsten disulfide (WS2) composite membrane with bioinspired serosa-mimetic structures as an efficient osmotic energy generator coupling light. As a result, the output power could be up to 16.43 W m−2 under irradiation, outperforming traditional two-dimensional (2D) membranes. Both the experiment and simulation uncover that the generated photothermal and photoelectronic effects could synergistically promote the confined ion transport process. In addition, this membrane also possesses great anti-fouling properties, endowing its practical application. This work paves new avenues for sustainable power generation by coupling solar energy. |
| Keywords: | Ion Transport Osmotic Energy Photo-Thermal Surface Charge Synergy Effect |