Precision Preparation of Nanocoatings: Applications and Core Competitiveness of Ultrasonic Spraying Technology

1. New Energy Field

(1) Lithium-ion Battery Electrode Coating: Spraying nano-active material coatings (such as nanoparticles, silicon-carbon nanocomposite materials) onto the surface of positive/negative current collectors (copper foil, aluminum foil) in lithium-ion batteries, or preparing nanoscale electrolyte coatings and separator functional coatings.

Ultrasonic spraying technology produces coatings with uniform thickness (within ±5%), allowing precise control of areal density, improving electrode conductivity and lithium-ion migration efficiency, increasing battery capacity and cycle life; it is compatible with flexible current collectors, supporting the fabrication of soft-pack batteries and ultra-thin batteries.

(2) Proton Exchange Membrane Coating for Fuel Cells (PEMFC): Spraying nanoscale platinum-based catalyst coatings (such as Pt/C nanoparticles) onto the surface of the proton exchange membrane, or preparing alcohol inhibition layers and gas diffusion layers. Catalyst utilization is increased by more than 30% (avoiding agglomeration), coating thickness is controllable (nanoscale), reducing the amount of precious metals used; the performance stability of membrane electrode assemblies (MEAs) is significantly improved. (3) Solar Cell Coatings: Spraying nano-perovskite precursor coatings onto perovskite solar cell substrates, or preparing anti-reflection coatings for silicon-based solar cells. The coatings are pinhole-free, with a coverage of over 90%, improving light absorption efficiency; low-temperature processing (<150℃) is compatible with flexible substrates, supporting mass production of flexible solar cells.

2. Electronics and Semiconductor Fields

(1) Chip Packaging and Functional Coatings: Spraying nano-insulating coatings, thermally conductive coatings (such as graphene/carbon nanotube composite coatings), or preparing nanoscale passivation layers onto chip surfaces. Coating thickness is precise to the nanometer level, without damaging the chip's fine structure; excellent insulation/thermal conductivity improves chip reliability and heat dissipation efficiency.

(2) Printed Electronics (Flexible Electronics): Spraying nano-silver wire/graphene conductive coatings onto PET/PI flexible substrates to prepare flexible circuit boards, flexible sensors, and OLED display electrodes. Non-contact spraying avoids substrate damage, and the coating uniformity is good (sheet resistance deviation < 5%), enabling large-area, roll-to-roll continuous fabrication. 

3. Biomedical Field

(1) Functional Coatings for Medical Devices: Spraying nano-antibacterial coatings and biocompatible coatings (such as hydroxyapatite nano-coatings) onto the surfaces of medical catheters and implants (e.g., artificial joints, cardiac stents). The coatings are thin and uniform (nanoscale), with strong adhesion to the substrate and no risk of detachment.

(2) Drug-Release Coatings: Spraying nano-drug coatings (such as paclitaxel nanoparticle coatings) onto the surfaces of drug carriers (e.g., microspheres, medical stents) to achieve controlled drug release. Drug loading and coating thickness can be precisely controlled, and the release period is adjustable (from a few days to several months), reducing drug toxicity and side effects.

4. Optics and Protection Field

(1) Functional Coatings for Optical Devices: Spraying nano-antireflective coatings (nano-coatings), anti-fouling coatings (nano-hydrophobic coatings), and infrared absorption coatings (ITO nano-coatings) onto the surfaces of lenses, optical fibers, and laser devices.

(2) Self-Cleaning Coatings: Spraying nano-TiO₂ photocatalytic self-cleaning coatings and superhydrophobic nano-coatings onto architectural glass, photovoltaic panels, and automotive paint surfaces. The coating has photocatalytic degradation of organic matter or superhydrophobic properties, enabling self-cleaning, anti-fogging, and anti-icing; it also has high efficiency for large-area spraying.

‍‍‍Shanghai Yangmi's ultrasonic spraying technology, with its characteristics of "precision, efficiency, gentleness, and controllability," perfectly matches the requirements of nanomaterial coating preparation for fineness, uniformity, and material compatibility. It has become a core process for nanomaterial coating preparation in high-end fields such as new energy, electronics, biomedicine, and optics. Its advantages are not only reflected in improved coating performance but also in reduced material costs and the ability to achieve large-scale production, making it a key supporting technology for the industrial application of nanomaterials.‍‍‍