碳化温度对泡沫碳光热水蒸发性能的影响

作者：Yuan Jiaxiang; Fang Wei^*; Chen Hui; Wang Daheng; Du Xing; He Xuan; Li Weixin; Zhao Lei

来源：Journal of Functional Materials, 2023, 54(1): 1186-1193.

DOI：10.3969/j.issn.1001-9731.2023.01.027

• carbon foam
• carbonization temperature
• light absorption
• solar steam evaporation performance
• thermal management

A three-dimensional porous carbon foam absorber was prepared by surfactant foaming method. The relative content of organic matter/C for carbon foam was adjusted by varying the carbonization temperature. The relationship of organic matter/C, light absorption and thermal conductivity was studied to find an optimal equilibrium for comprehensively optimizing the solar steam evaporation performance. Results show that the carbonization temperature has a great effect on the relative content of organic matter/C and pore structure of carbon foam. With reducing relative content of organic matter/C, it demonstrates a significant improvement for light absorption, but also suffers a decrease of thermal insulation performance, which worsens the thermal management ability of solar evaporation system. When carbonized at 600 °C, the carbon foam absorber can acquire a optimal equilibrium between light absorption and thermal management, which reveals the highest absorption rate (96.5%) and best solar steam evaporation performance (1.0391 kg/(m2· h)). The vapor evaporation rate is 2.08 times higher than that of pure water. ? 2023 Journal of Functional Materials.

• 单位
  武汉科技大学