Nissan is in the testing phase of a groundbreaking automotive paint that could significantly reduce both the surface and interior temperatures of vehicles. This innovative paint, developed in collaboration with Rot Cool, a company known for its cooling products, uses electromagnetic waves to achieve its cooling effects.
Radiative paint technology, while not new, has typically been used on buildings to help maintain cooler indoor temperatures. However, the paint used in such applications is thick, lacks the durability of automotive finishes, and is applied using rollers—methods unsuitable for vehicles. Nissan’s new formula, on the other hand, is specifically designed for automotive use, allowing it to be applied with spray guns and used with standard clear top coats. Despite its advancements, this new paint is still six times thicker than conventional automotive finishes.
The secret to this paint’s cooling capability lies in its unique microstructure components. The first component reflects near-infrared rays, a common technique used to reduce heat. The second component is where the true innovation occurs—it generates electromagnetic waves that counteract the sun’s rays, preventing heat transfer to other parts of the car.
“My dream is to create cooler cars without consuming energy,” said Dr. Susumu Miura, the senior manager leading this project. This development is particularly crucial in the era of electric vehicles (EVs), where the strain on the battery from air conditioning during hot weather can significantly impact the vehicle’s range.
While Nissan hasn’t disclosed the exact mechanisms behind the electromagnetic wave generation, the early results are promising. Tests have shown a 12°C drop in exterior surface temperature, with the interior also being 5°C cooler.
As for when this technology will be available to consumers, Nissan is still refining the paint, aiming to make it thinner for easier application. If it reaches production, this special paint will likely be offered as an option for select vehicles.