fig12

Figure 12. Large-scale manufacturing of electric generation layer by coating technology. (A) BPF prepared by casting and spraying process^[105]. Reproduced with permission. Copyright 2021, Springer Nature Limited; (B) Large-scale manufacturing of array electric generation layers by scrape coating method^[172]. Reproduced with permission. Copyright 2023, John Wiley & Sons; (C) Large-area protein film obtained by drop coating strategy^[40]. Reproduced with permission. Copyright 2023, Royal Society of Chemistry; (D) Preparation process of coaxial yarns with radial gradient of PSSA/PVA^[129]. Reproduced with permission. Copyright 2025, John Wiley & Sons. BPF: Bilayer polymer film; PSSA: poly(4-benzenesulfonic acid); PVA: polyvinyl alcohol; PDDA: poly(diallyl dimethyl ammonium chloride); PSS: polystyrene sulfonic acid; PVDF-HFP: poly(vinylidene fluoride)-hexafluoropropylene; CNT: carbon nanotube; PET: poly (ethylene terephthalate); PEG: polyethylene glycol.