June 23, 2024

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By modifying a basic law of physics, it will be possible to recharge electric cars in 10 minutes

By modifying a basic law of physics, it will be possible to recharge electric cars in 10 minutes

05/28/2024 07:19

Updated on 28/05/2024 at 08:46

It is very important technical specifications of the electric car: Motor power and battery capacity as Direct current recharging speed. The time spent at the charging station waiting for the process to complete depends on this. In general, this is related to a certain point within Load curve Which takes the battery from 0% of its capacity to 80%.

This speed, which is actually charging power, depends on the capacity of the supply point, the battery technology and the car’s electrical system. In many cases, it is only possible to maintain the maximum charging power indicated in the technical sheet For a short period of time. In short, the time it takes to charge a car is highly variable and depends on many factors.

The waiting time on the charger depends on several factors.

A chemical breakthrough could change the recharging process forever

The investigation is detailed in the magazine Proceedings of the National Academy of Sciencescould lead to the creation of more efficient energy storage devices, e.g Supercapacitors. This is confirmed Ankur Guptaassistant professor of chemical and biological engineering at the University of Colorado Boulder.

in Your information“Given the fundamental role of energy in the future of the planet, I was inspired to apply my knowledge of chemical engineering to the development of energy storage devices that seemed like a completely unexplored topic and, as such, an ideal opportunity,” says Gupta.

Various chemical engineering techniques, typically used to analyze flow in porous materials such as oil tanks and water seepages, have not been fully exploited in some energy storage systems.

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The result is important Not just for recharging power in vehicles and electronic devices, but also for electrical networks. In the latter, where fluctuations in energy demand are common, efficient storage is needed to avoid waste during periods of low demand and ensure rapid supply during times of high demand.

Kirchhoff’s law defines the relationships between charges in an electrical circuit.

The secret of supercapacitors

Supercapacitors store energy stably rather than chemically, allowing them to be charged and discharged more quickly without damaging their internal structure. This gives them a High energy densityBut one Much lower energy density Of those chemical batteries.

It depends on the accumulation of ions In your pores To store energy and are therefore able to provide faster charging times and longer life than batteries. “The main attraction of supercapacitors is their speed,” Gupta said. “So how can we speed up the charging process and release energy? Through more efficient movement of ions.”

Discover the missing link

Your search results They change Kirchhoff’s lawWhich has been instrumental in studying current flow in electrical circuits since 1845 and is taught in high school science classes.

Thus, two basic principles were established in the theory of electrical circuits: Kirchhoff’s current law (or the first law) and Kirchhoff’s stress law (or the second law). The first law states that the algebraic sum of the currents entering and leaving a node in an electrical circuit is zero. The second law states that the algebraic sum of the potential difference (voltage) in any closed loop of an electrical circuit is equal to zero. These principles apply to both direct current and alternating current circuits.

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However, unlike electrons, ions move due to electric fields and diffusion. Scientists have discovered that its behavior at pore junctions Different from what is described in Kirchhoff’s law.

Before this research, the description of ionic movements in the scientific literature was limited to single straight pores. However, this study allowed Simulate and predict the movement of ions within minutes In a complex network consisting of thousands of interconnected pores. “This is a major advance in the work,” Gupta concludes. We have found the missing link“.