Solar energy used to evaporate seawater and purify fresh water is regarded as an innovative way to address water scarcity. In this paper, high-performance porous wood-carbonized solar steam evaporation (SSE) is proposed by regulating the surface carbonization process, and the evaporation performance of the SSE under different carbonization degrees is studied. The results show that the variation in carbonization degree treatment can significantly affect the photothermal conversion characteristics, which in turn affect the evaporation efficiency of solar steam evaporation. Surprisingly, at 1 sun equivalent input, this evaporator exhibits a low thermal conductivity (0.17 W m⁻¹ K⁻¹), high solar energy absorption rate (92.5%), high surface temperature (49.5 °C) and evaporation efficiency (78%). When the surface carbonization degree of the SSE is 20%, an excellent thermal conductivity coefficient (0.33 W m⁻¹ K⁻¹) is available by the efficient water conduction ability. Additionally, an outstanding evaporation rate (1.8 kg m⁻² h⁻¹) of the SSE can be obtained, which is significantly superior to that of the reported wood-based evaporators. Due to its simple preparation, wood-based SSE with recyclability, low-cost and extraordinary performance can be expected to provide potential fresh water for commercial and renewable applications.

用来蒸发海水和净化淡水的太阳能被认为是解决缺水的一种创新方法。本文通过调节表面碳化过程，提出了高性能的多孔木材碳化太阳蒸汽蒸发技术，并研究了不同碳化程度下SSE的蒸发性能。结果表明，碳化程度处理的变化会显着影响光热转化特性，进而影响太阳蒸汽蒸发的蒸发效率。令人惊讶的是，在1个太阳当量输入下，该蒸发器显示出较低的热导率（0.17 W m ^-1  K ^-1），高太阳能吸收率（92.5％），高表面温度（49.5°C）和蒸发效率（78％）。当SSE的表面碳化度为20％时，通过有效的水传导能力可获得优异的导热系数（0.33W m ^-1  K ^-1）。另外，可以获得SSE的优异的蒸发速率（1.8kg m ^-2  h ^-1），这明显优于所报道的基于木材的蒸发器的蒸发速率。由于其制备简单，具有可回收性，低成本和出色性能的木质SSE有望为商业和可再生应用提供潜在的淡水。