Superhydrophobic modified film and modification method, and triboelectric nanogenerator (TENG) composed thereof and preparation method

A preparation method for a greenhouse film-based TENG, comprising:

• i) preparing a superhydrophobic modified film with a superhydrophobic property on an upper surface of the superhydrophobic modified film;
• ii) preparing a lower electrode;
• iii) preparing an upper electrode;
• and
• iv) connecting the upper electrode and the lower electrode;
• wherein the greenhouse film-based TENG comprises the superhydrophobic modified film, the lower electrode, and the upper electrode, wherein the lower electrode is arranged on a lower surface of the superhydrophobic modified film, the upper electrode is arranged on the upper surface of the superhydrophobic modified film, and the superhydrophobic modified film is modified by a superhydrophobic modification method for a greenhouse film;
• wherein the superhydrophobic modification method comprises:
• 1) placing a polyethylene (PE) film in an inductively coupled plasma (ICP) etcher;
• 2) etching an upper surface of the PE film for a first predetermined time by the ICP etcher, wherein a nano-textured structure is formed on the upper surface of the PE film;
• and
• 3) depositing the upper surface of the PE film for a second predetermined time by the ICP etcher, wherein a fluorocarbon layer is deposited on the nano-textured structure to complete a modification and take out the PE film;
• wherein step iii) comprises:
• sticking a piece of thin conductive copper tape on the upper surface of the superhydrophobic modified film at a center line of the lower electrode to prepare the upper electrode on the upper surface of the superhydrophobic modified film.

A preparation method for a greenhouse film-based TENG, comprising:

• i) preparing a superhydrophobic modified film with a superhydrophobic property on an upper surface of the superhydrophobic modified film;
• ii) preparing a lower electrode;
• iii) preparing an upper electrode;
• and
• iv) connecting the upper electrode and the lower electrode with two pieces of copper tape, respectively to lead out an output electrical signal,
• wherein the greenhouse film-based TENG comprises the superhydrophobic modified film, the lower electrode, and the upper electrode, wherein the lower electrode is arranged on a lower surface of the superhydrophobic modified film, the upper electrode is arranged on the upper surface of the superhydrophobic modified film, and the superhydrophobic modified film is modified by a superhydrophobic modification method for a greenhouse film;
• wherein the superhydrophobic modification method comprises:
• 1) placing a polyethylene (PE) film in an inductively coupled plasma (ICP) etcher;
• 2) etching an upper surface of the PE film for a first predetermined time by the ICP etcher, wherein a nano-textured structure is formed on the upper surface of the PE film;
• and
• 3) depositing the upper surface of the PE film for a second predetermined time by the ICP etcher, wherein a fluorocarbon layer is deposited on the nano-textured structure to complete a modification and take out the PE film.