A Portable Device Utilizing High-Entropy Perovskite Aerogels for Efficient Energy Conversion from Atmospheric Water

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-01-02 DOI:10.1007/s42765-024-00504-7

Yi Lu, Zongze Li, Guangyao Zhang, Hao Zhang, Deqi Fan, Ming Zhao, Han Zhu, Xiaofei Yang

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引用次数: 0

Abstract

Water and energy scarcity present significant global challenges in arid and remote regions, therefore, it is imperative to develop a sustainable approach that harnesses atmospheric moisture and sunlight to generate both water and energy. A portable system was presented, which directly harvests water from atmospheric moisture and generates energy using cellulose aerogels–high-entropy perovskite La(Cr_0.2Mn_0.2Fe_0.2Co_0.2Ni_0.2)O₃–lithium chloride (CA–LB5O3–LiCl). The system captures water from moist air during the night and facilitates solar-driven water evaporation and electrocatalytic water splitting during the day. The CA integrated with LiCl achieves efficient moisture absorption even in arid conditions due to its combined hydrophilic structure and entrapped water. The high-entropy perovskite LB5O3 promotes the lattice oxygen mechanism by weakening the metal–oxygen bond, resulting in an overpotential of 290 mV at 10 mA·cm⁻². Furthermore, its excellent solar absorption and photothermal conversion enhance water uptake to 1.01 g·g⁻¹ at 60% relative humidity (RH) as well as increase water evaporation rates to 2.1 kg·h⁻¹·m^–2. This process simultaneously generates O₂ and H₂ from moist airflow, providing both clean water and green fuel. This flexible and sustainable system offers a new pathway for producing water and energy in resource-scarce environments with potential applications in arid and remote regions.

Graphical Abstract

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一种利用高熵钙钛矿气凝胶进行大气水高效能量转换的便携式装置

水和能源短缺是干旱和偏远地区面临的重大全球挑战，因此，必须开发一种利用大气湿度和阳光来产生水和能源的可持续方法。提出了一种利用纤维素气凝胶-高熵钙钛矿La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2) o3 -氯化锂（CA-LB5O3-LiCl）直接从大气水分中获取水分并产生能量的便携式系统。该系统在夜间从潮湿的空气中捕获水分，并在白天促进太阳能驱动的水蒸发和电催化水分解。与LiCl集成的CA由于其亲水性结构和夹持水的结合，即使在干旱条件下也能实现有效的吸湿。高熵钙钛矿LB5O3通过削弱金属-氧键促进晶格氧机制，在10 mA·cm−2下产生290 mV的过电位。此外，在60%相对湿度（RH）下，其优异的太阳能吸收和光热转换使水分吸收率提高到1.01 g·g−1，水分蒸发率提高到2.1 kg·h−1·m-2。这个过程同时从潮湿的气流中产生O2和H2，提供清洁的水和绿色的燃料。这种灵活和可持续的系统为在资源稀缺的环境中生产水和能源提供了一条新的途径，在干旱和偏远地区具有潜在的应用前景。图形抽象

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.