Bioinspired gradient-structured wood interfaces achieving efficient ion diffusion to generate electricity from natural evaporation
Literature Information
The silent yet ubiquitous natural evaporation of water stores immense energy, and electrical double layers from the hydrolysis of oxygen-containing functional groups are the key to power generation at the solid–liquid interface of evaporation. However, slow ion diffusion in evaporation-driven water transport limits efficient energy harvesting for electricity generation. In contrast to the typical homogeneous interfacial oxygen-containing functional groups (OCGs), we present a high-performance wood-based interfacial evaporation-driven nanogenerator (W-IENG) with significantly distributed OCG gradients, which is constructed through a rational process design using bioinspired self-assembled multilayer nanofiber membranes. Based on the abundance of reactive OCGs contained in wood derivatives, our design is simply constructed by gradient reduction in the number of hydrolysis sites of OCGs using different materials. In particular, this porous interface exhibits lower charge transfer resistance and higher ionic conductivity. As a result, the power density of our device is approximately 7.5 times higher than the average value of previously reported W-IENGs. These findings provide novel insights into the optimization of efficient evaporative power generation systems through the functional coupling of evaporation interfaces using the OCG gradient and facilitate the effective utilization of energy in the natural environment.
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment














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