Carbon nanotubes, as a one-dimensional nanomaterial with a special structure, are composed of single or multiple layers of graphene layers curled around a central axis, and have shown great application potential in many fields.
In terms of industrial applications, ultrasonically sprayed carbon nanotubes benefit the manufacturing of transistors, sensors, and other electronic devices, improving their performance. In composite materials, they serve as reinforcing and conductive materials, enhancing their overall performance. In energy storage, supercapacitors and battery electrodes utilize this technology, improving energy storage efficiency and service life. In the biomedical field, drug delivery and biosensors utilize this technology to achieve more precise and efficient operation. For example, in fuel cell catalyst layer coating, ultrasonically sprayed platinum/carbon nanotube catalysts achieve uniformity errors of less than ±3%, significantly improving electrode reaction efficiency.
During the preparation process, the addition of strong oxidants and prolonged ultrasonic treatment can damage the carbon nanotube wall structure, resulting in a decrease in the film's electrical performance. Carbon nanotubes tend to aggregate in solutions, affecting their dispersion and stability, and thus limiting the coating quality.
Ultrasonic spraying of carbon nanotubes holds great potential for development. Researchers are actively exploring improved methods, such as optimizing the preparation process and identifying more suitable dispersants, to address existing challenges. Technological advancements are expected to enable more precise coating control, further improving material utilization and reducing costs. This technology is poised to play a greater role in emerging fields such as flexible electronics and wearable devices, driving innovation and upgrading in related industries.
