Biomimetic deep-sea fish micro-nanosphere porous media carriers for enhancing the degree of reaction and efficiency of solar thermochemistry

IF 9.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management Pub Date : 2025-04-04 DOI:10.1016/j.enconman.2025.119778

Jintao Song , Fuqiang Wang , Weifeng Meng , Jiaxin Du , Yaping Fan , Guoliang Zhang , Ziming Cheng , Hongliang Yi , Yong Shuai , Hao Zhang

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Abstract

The porous medium serves as a light energy receiver and catalyst carrier for direct solar thermochemical hydrogen production. Improving its absorption rate can directly increase the final solar thermochemical efficiency. Guided by biomimetic thinking and inspired by the micro-nano structure of the skin of deep-sea fish with ultra-high absorption rate, the research proposes a biomimetic micro-nanosphere porous medium. The aim is to directly increase the surface absorptivity of the porous medium, thus achieving an increase in the thermochemical energy storage efficiency. The research result shows that the proposed structure achieves a vertical incidence absorptivity of 99.15% in the simulation, which is an improvement of 15.90%. The multi-angle absorptivity reaches 89.16%, which is an improvement of 15.99%. Moreover, it is experimentally found that the absorptivity of the etched out flat plate with micro-nano structure reaches 98.35%. In terms of solar thermochemistry, with the proposed structure, the solar absorptivity can be increased by 10.80%, methane conversion can be increased by 2.68%, and fuel efficiency can be increased by 2.29%. The biomimetic thought guide can provide new ideas for porous media design. And the proposed biomimetic structure promotes the industrialization of solar thermochemical energy storage applications.

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仿生深海鱼类微纳球多孔介质载体，提高太阳热化学反应程度和效率

多孔介质作为光能接收器和催化剂载体，用于直接太阳能热化学制氢。提高其吸收率可以直接提高最终的太阳能热化效率。本研究以仿生思维为指导，以深海鱼类皮肤超高吸收率的微纳结构为灵感，提出了一种仿生微纳球多孔介质。其目的是直接提高多孔介质的表面吸收率，从而实现热化学储能效率的提高。研究结果表明，该结构在模拟中垂直入射吸收率达到99.15%，提高了15.90%。多角度吸光率达到89.16%，提高了15.99%。此外，实验发现蚀刻出的微纳结构平板的吸光率达到98.35%。在太阳能热化学方面，采用该结构，太阳能吸收率可提高10.80%，甲烷转化率可提高2.68%，燃油效率可提高2.29%。仿生思维导向可以为多孔介质设计提供新的思路。所提出的仿生结构促进了太阳能热化学储能应用的产业化。

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来源期刊

Energy Conversion and Management 工程技术-力学

CiteScore

19.00

自引率

11.50%

发文量

1304

审稿时长

17 days

期刊介绍： The journal Energy Conversion and Management provides a forum for publishing original contributions and comprehensive technical review articles of interdisciplinary and original research on all important energy topics. The topics considered include energy generation, utilization, conversion, storage, transmission, conservation, management and sustainability. These topics typically involve various types of energy such as mechanical, thermal, nuclear, chemical, electromagnetic, magnetic and electric. These energy types cover all known energy resources, including renewable resources (e.g., solar, bio, hydro, wind, geothermal and ocean energy), fossil fuels and nuclear resources.