{"title":"超耐久太阳能驱动海水电解实现可持续制氢","authors":"Zhaolong Wang, Ciwei Wu, Xiaolong Wang, Mingzhu Xie, Yinfeng Li, Ziheng Zhan, Yong Shuai","doi":"10.1002/adfm.202416014","DOIUrl":null,"url":null,"abstract":"Ions in seawater hinder direct sewage electrolysis due to the extreme corrosion of Cl<sup>−</sup> to the anode and reaction of Mg<sup>2+</sup> and Ca<sup>2+</sup> on the cathode producing solid substances, which reduce the electrolytic efficiency. However, traditional desalination consuming fossil fuel with massive CO<sub>2</sub> emissions threatens human survival. Therefore, zero-carbon emission, ultra-durable, large-scale production of freshwater from seawater for water electrolysis is urgently needed. Herein, a multifunctional system for seawater is demonstrated electrolysis based on ultra-durable solar desalination outdoors. The solar evaporators reach an evaporation flux of 1.88 kg m<sup>−2</sup> h<sup>−1</sup> with a photothermal conversion efficiency of solar energy as high as 91.3% with excellent ultra-durable salt resistance even for saturated saltwater due to the Marangoni effects. Moreover, the condensation of pure water from solar desalination based on the evaporation system reaches 0.54 L m<sup>−2</sup> h<sup>−1</sup> outdoors, which is suitable for a 20 cm × 20 cm engineered electrode equipped with a Janus membrane powered by a solar panel to produce H<sub>2</sub> outdoors. The ultrafast unidirectional transport of H<sub>2</sub> bubbles enabled by Janus membranes can greatly improve the H<sub>2</sub> production efficiency at a rate approaching 85 mL h<sup>−1</sup> for continuous 24 h outdoors.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":null,"pages":null},"PeriodicalIF":18.5000,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultra-Durable Solar-Driven Seawater Electrolysis for Sustainable Hydrogen Production\",\"authors\":\"Zhaolong Wang, Ciwei Wu, Xiaolong Wang, Mingzhu Xie, Yinfeng Li, Ziheng Zhan, Yong Shuai\",\"doi\":\"10.1002/adfm.202416014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ions in seawater hinder direct sewage electrolysis due to the extreme corrosion of Cl<sup>−</sup> to the anode and reaction of Mg<sup>2+</sup> and Ca<sup>2+</sup> on the cathode producing solid substances, which reduce the electrolytic efficiency. However, traditional desalination consuming fossil fuel with massive CO<sub>2</sub> emissions threatens human survival. Therefore, zero-carbon emission, ultra-durable, large-scale production of freshwater from seawater for water electrolysis is urgently needed. Herein, a multifunctional system for seawater is demonstrated electrolysis based on ultra-durable solar desalination outdoors. The solar evaporators reach an evaporation flux of 1.88 kg m<sup>−2</sup> h<sup>−1</sup> with a photothermal conversion efficiency of solar energy as high as 91.3% with excellent ultra-durable salt resistance even for saturated saltwater due to the Marangoni effects. Moreover, the condensation of pure water from solar desalination based on the evaporation system reaches 0.54 L m<sup>−2</sup> h<sup>−1</sup> outdoors, which is suitable for a 20 cm × 20 cm engineered electrode equipped with a Janus membrane powered by a solar panel to produce H<sub>2</sub> outdoors. The ultrafast unidirectional transport of H<sub>2</sub> bubbles enabled by Janus membranes can greatly improve the H<sub>2</sub> production efficiency at a rate approaching 85 mL h<sup>−1</sup> for continuous 24 h outdoors.\",\"PeriodicalId\":112,\"journal\":{\"name\":\"Advanced Functional Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":18.5000,\"publicationDate\":\"2024-10-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Functional Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/adfm.202416014\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adfm.202416014","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
海水中的离子会阻碍直接电解污水,因为 Cl- 对阳极的极度腐蚀以及 Mg2+ 和 Ca2+ 在阴极上的反应会产生固体物质,从而降低电解效率。然而,传统的海水淡化消耗化石燃料,排放大量二氧化碳,威胁着人类的生存。因此,迫切需要零碳排放、超耐久、大规模的海水电解淡水生产技术。在此,展示了一种基于户外超耐久太阳能海水淡化的多功能海水电解系统。太阳能蒸发器的蒸发通量达到 1.88 kg m-2 h-1,太阳能的光热转换效率高达 91.3%,由于马兰戈尼效应,即使是饱和盐水也具有出色的超耐久耐盐性。此外,基于蒸发系统的太阳能海水淡化所产生的纯水在室外的凝结量达到 0.54 L m-2 h-1,适合在室外用太阳能电池板驱动一个装有 Janus 膜的 20 cm × 20 cm 工程电极来生产 H2。Janus 膜实现了 H2 气泡的超快单向传输,可大大提高 H2 的生产效率,室外连续 24 小时的生产率接近 85 mL h-1。
Ultra-Durable Solar-Driven Seawater Electrolysis for Sustainable Hydrogen Production
Ions in seawater hinder direct sewage electrolysis due to the extreme corrosion of Cl− to the anode and reaction of Mg2+ and Ca2+ on the cathode producing solid substances, which reduce the electrolytic efficiency. However, traditional desalination consuming fossil fuel with massive CO2 emissions threatens human survival. Therefore, zero-carbon emission, ultra-durable, large-scale production of freshwater from seawater for water electrolysis is urgently needed. Herein, a multifunctional system for seawater is demonstrated electrolysis based on ultra-durable solar desalination outdoors. The solar evaporators reach an evaporation flux of 1.88 kg m−2 h−1 with a photothermal conversion efficiency of solar energy as high as 91.3% with excellent ultra-durable salt resistance even for saturated saltwater due to the Marangoni effects. Moreover, the condensation of pure water from solar desalination based on the evaporation system reaches 0.54 L m−2 h−1 outdoors, which is suitable for a 20 cm × 20 cm engineered electrode equipped with a Janus membrane powered by a solar panel to produce H2 outdoors. The ultrafast unidirectional transport of H2 bubbles enabled by Janus membranes can greatly improve the H2 production efficiency at a rate approaching 85 mL h−1 for continuous 24 h outdoors.
期刊介绍:
Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week.
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