fig5

Figure 5. Biomass materials for MEGT. (A) Schematic of the device based on lignosulfonic acid and property^[113]. Reproduced with permission. Copyright 2025, American Chemical Society; (B) Schematic diagram of the printing paper-based device and its working mechanism^[114]. Reproduced with permission. Copyright 2019, Royal Society of Chemistry; (C) Preparation process of PNMEG^[115]. Reproduced with permission. Copyright 2022, Elsevier B.V; (D) Schematic diagram of water absorption in protein-based device and optical image of protein powder^[40]. Reproduced with permission. Copyright 2023, Royal Society of Chemistry; (E) The structure of the device with a G.s-PSII hybrid film as the power-generating layer^[119]. Reproduced under CC BY 4.0 license from Guoping Ren, 2022, Research. MEGT: Moisture-electric generation textile; PNMEG: protein nanofibrils-moisture electric generator; PSII: photosystem II; ITO: indium tin oxide; HPEG: hydrovoltaic-photovoltaic electricity generator.