Interface solar-driven evaporation is a very promising technology used in solar energy harvesting, seawater desalination and water purification. However, salt accumulation is still a serious problem that hinders the long-term stable operation of the evaporator. Herein, we use natural wood with inherent porosity to develop a flexible cellulose aerogel, which can be used as efficient and stable solar evaporator for desalination after simple surface carbonization. This aerogel evaporator achieves a solar steam efficiency of 83.4% and an evaporation rate of 1.40 kg m⁻² h⁻¹ under the sunlight intensity of 1 kW m⁻². In the simulated evaporation experiment for 7 days, the evaporator shows a stable evaporation rate (about 1.39 kg m⁻² h⁻¹), indicating the potential for long-term operation. In addition, the evaporator has the ability to resist salt accumulation and self-cleaning. The low cost, simple preparation and multiple functions make the evaporator promising to be a continuous and stable installation for solar desalination.

界面太阳能驱动蒸发是一种非常有前途的技术，用于太阳能收集、海水淡化和水净化。然而，盐分的积累仍然是阻碍蒸发器长期稳定运行的严重问题。在此，我们利用具有固有孔隙率的天然木材开发了一种柔性纤维素气凝胶，经过简单的表面碳化后，可用作高效稳定的太阳能蒸发器进行海水淡化。该气凝胶蒸发器在1 kW m ^-2的阳光强度下实现了83.4%的太阳能蒸汽效率和1.40 kg m ^-2  h ^-1的蒸发率。在7天的模拟蒸发实验中，蒸发器显示出稳定的蒸发速率（约1.39 kg m ^-2  h⁻¹ )，表明长期经营的潜力。此外，蒸发器具有抗盐分积累和自清洁能力。成本低、制备简单、功能多样，使蒸发器有望成为太阳能海水淡化的连续稳定装置。