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Easily Repairable and High-Performance Carbon Nanostructure Absorber for Solar Photothermoelectric Conversion and Photothermal Water Evaporation
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-02-06 , DOI: 10.1021/acsami.2c22077 Pengfei Cheng 1 , Dong Wang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-02-06 , DOI: 10.1021/acsami.2c22077 Pengfei Cheng 1 , Dong Wang 1
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Carbon materials are a category of broadband solar energy harvesting materials that can convert solar energy into heat under irradiation, which can be used for photothermal water evaporation and photothermoelectric power generation. However, destruction of the carbon nanostructure during usage will significantly decrease the light-trapping performance and, thus, limit their practical applications. In this article, an easily repairable carbon nanostructure absorber with full-solar-spectrum absorption and a hierarchically porous structure is prepared. The carbon absorber shows a superhigh light absorption of above 97% across the whole solar spectrum because of multiple scatterings within the carbon nanostructure and photon interaction with the carbon nanoparticles. The excellent light absorption performance directly leads to a good photothermal effect. As a consequence, the carbon absorber integrated with a thermoelectric module can obtain a large power (133.3 μW cm–2) output under 1 sun. In addition, the carbon absorber combined with the sponge can achieve a high photothermal water evaporation efficiency of 83.6% under 1 sun. Its high-efficiency solar-to-electricity and photothermal water evaporation capabilities demonstrate that the carbon absorber with superhigh absorption, simple fabrication, and facile repairability shows great potential for practical fresh water production and electric power generation.
中文翻译：
用于太阳能光热电转换和光热水蒸发的易于修复的高性能碳纳米结构吸收器
碳材料是一类宽带太阳能收集材料，可在照射下将太阳能转化为热能，可用于光热水蒸发和光热发电。然而，碳纳米结构在使用过程中的破坏会显着降低光捕获性能，从而限制其实际应用。在这篇文章中，制备了一种具有全太阳光谱吸收和分级多孔结构的易于修复的碳纳米结构吸收剂。由于碳纳米结构内的多重散射以及光子与碳纳米颗粒的相互作用，碳吸收剂在整个太阳光谱中显示出超过 97% 的超高光吸收。优异的吸光性能直接导致良好的光热效应。因此，与热电模块集成的碳吸收器可以获得大功率（133.3 μW cm–2 ) 在 1 个阳光下输出。此外，与海绵结合的碳吸收剂可在1个太阳下实现83.6%的高光热水蒸发效率。其高效的太阳能发电和光热水蒸发能力表明，具有超高吸收性、制造简单和易于修复的碳吸收器在实际淡水生产和发电方面具有巨大潜力。
更新日期：2023-02-06
中文翻译：
用于太阳能光热电转换和光热水蒸发的易于修复的高性能碳纳米结构吸收器
碳材料是一类宽带太阳能收集材料，可在照射下将太阳能转化为热能，可用于光热水蒸发和光热发电。然而，碳纳米结构在使用过程中的破坏会显着降低光捕获性能，从而限制其实际应用。在这篇文章中，制备了一种具有全太阳光谱吸收和分级多孔结构的易于修复的碳纳米结构吸收剂。由于碳纳米结构内的多重散射以及光子与碳纳米颗粒的相互作用，碳吸收剂在整个太阳光谱中显示出超过 97% 的超高光吸收。优异的吸光性能直接导致良好的光热效应。因此，与热电模块集成的碳吸收器可以获得大功率（133.3 μW cm–2 ) 在 1 个阳光下输出。此外，与海绵结合的碳吸收剂可在1个太阳下实现83.6%的高光热水蒸发效率。其高效的太阳能发电和光热水蒸发能力表明，具有超高吸收性、制造简单和易于修复的碳吸收器在实际淡水生产和发电方面具有巨大潜力。
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