Abstract: A plant protein-based triboelectric nanogenerator (TENG), and a fabrication method and use thereof are provided. The TENG includes a triboelectric negative layer and a protein film, where the protein film and the triboelectric negative layer are stacked surface-to-surface; and an electrode is adhered to or plated on a back surface of each of the protein film and the triboelectric negative layer, or only a back surface of either of the protein film and the triboelectric negative layer is provided with a grounded electrode. A protein powder is dissolved in water or an ethanol aqueous solution, then a plasticizing agent is added, and the protein is denatured through thermal treatment to obtain an extended structure required for film formation; and the solvent is evaporated, and a resulting product is dried to obtain the protein film with uniform texture and excellent transparency and flexibility. The TENG is used in crop growth.

Abstract: The invention discloses a method for improving triboelectric output performance of a protein film by changing a protein structure. Indissolvable protein powder and a trace amount of another protein powder are co-dissolved in a strong alkaline aqueous solution and maintained for a period of time, and then acidifying treatment is performed to achieve neutral condition to allow charge redistribution to induce refolding of the protein, which results in burying of hydrophobic groups of the protein and exposure of charged groups. Therefore, the solubility of the protein is remarkably improved, and a uniform protein solution is formed under a neutral condition. The plant protein structure is changed through a pH cycle process, a surface group exposure condition is adjusted, and the output performance of the plant protein film is greatly improved.

Abstract: A plant protein-based triboelectric nanogenerator (TENG), and a fabrication method and use thereof are provided. The TENG includes a triboelectric negative layer and a protein film, where the protein film and the triboelectric negative layer are stacked surface-to-surface; and an electrode is adhered to or plated on a back surface of each of the protein film and the triboelectric negative layer, or only a back surface of either of the protein film and the triboelectric negative layer is provided with a grounded electrode. A protein powder is dissolved in water or an ethanol aqueous solution, then a plasticizing agent is added, and the protein is denatured through thermal treatment to obtain an extended structure required for film formation; and the solvent is evaporated, and a resulting product is dried to obtain the protein film with uniform texture and excellent transparency and flexibility. The TENG is used in crop growth.