Boron nitride nanosheets (blue and white atoms) act as insulators to protect the lanthanum nitrate (green and purple atoms) in the middle layer in high temperature energy storage

The outer layer of the SSN-X interlayer is a material synthesized from boron nitride nanosheets on a c-BCB polymer matrix. The outer layer of this composite acts as an insulator, preventing charging from the electrodes of the capacitor device. Due to the nature of the outer layer material, scientists have focused on adjusting the central layer material formulation synthesized by barium titanate nanoparticles and c-BCB to have a high dielectric constant for the center layer material. The adjustment of the sandwich structure and the central layer formulation greatly increases the energy density and power density of the SSN-X sandwich composite.
Wang Qing, a materials scientist and principal researcher at Pennsylvania State University, said, “In the past, people focused on two-way film materials and changed the material properties by adjusting their material composition. Now we look at the three-way structure, which is for us. There is more room to adjust material composition and optimize material properties."
In the experiment, the researchers found that the SSN-x composite can work at 150 ° C (this experimental temperature is enough to withstand the test of the working temperature of electric vehicles). In the experiment, SSN-x composites withstood 24 Hours, and as many as 30,000 consecutive charge and discharge tests, there was no evidence of deterioration of charge and discharge. At high temperature, the performance of SSN-X composites is far superior to the most advanced high-analytical polymers in terms of energy density, power density, charge and discharge efficiency, and charge and discharge times before material decomposition.
“At the moment, we hope that this material can be mass-produced at an economical cost,” says Wang Qing, who also wants to work with electrical engineering and systems engineers to explore ways to effectively integrate this material into hybrid and pure electric vehicles. ".