Battery-powered electric vehicles have a good ecological footprint, but they also have many features that make them the most attractive alternative to traditional cars, such as price, short range, and long charging times. If you can replace the bulky and bulky battery with a better power storage method, you can eliminate these less popular features for electric vehicles. According to a European study, high-capacity supercapacitors are expected to be an ideal alternative.
In this research project called "ElectroGraph", research institutes and ten partners in the industry have jointly developed an innovative supercapacitor with higher storage performance than existing supercapacitors. The research team led by the German research institute Fraunhofer IPA is based on the premise that the increase in capacitor capacity is proportional to the available area of ​​the electrode. Therefore, the researchers explored a promising nanomaterial – graphene with a higher surface area per unit volume (m 2 /g). In fact, graphene has an "internal surface area" of up to about 2,600 square meters (m2/g) per gram (g), making it an ideal material for supercapacitor electrodes. In addition, graphene also has good current conduction properties.
Graphene is composed of an ultra-thin single-layer lattice of carbon atoms, which greatly increases the surface of the electrode. The space between the electrodes is filled with a liquid electrolyte on the basis of the ionic liquid. "The graphene-based electrode combines with the ionic electrolyte to form the ideal material combination," explains CarstenGlanz, who led the project at Fraunhofer.
In fact, not only researchers at Fraunhofer are conducting the research, but several research projects are currently exploring this research direction.
Researchers in Stuttgart chose a specific method: by arranging thin layers of graphene at a distance, they were able to create a manufacturing method—the theoretically usable area of ​​nanomaterials. It is actually available. This method avoids the connection of thin layers of graphene to each other resulting in a reduction in storage area, thereby affecting the storable energy.
According to Glanz, the electrodes found in this study provide 75% more storage capacity than the commercial electrodes used in current supercapacitors. Researchers are convinced that in the future generation of electric vehicles, the battery will be connected to multiple supercapacitors distributed throughout the car. These supercapacitors store the power required to perform HVAC, navigation systems, or motorized mirrors, effectively reducing battery load, and acting as a buffer for unloading batteries, especially when the motor is started. Therefore, in the future, a smaller battery can be used.
The research team developed a display system—a supercapacitor in the exterior mirror of the car that powers the rear view mirror.
Calcined Anthracite,Calcined Anthracite Coal,Electrically Calcined Anthracite Coal,Electrically Calcined Anthracite
Anyang Xinyi Alloy Co.,Ltd. , https://www.xyferroalloy.com