A breakthrough in supercapacitors will allow you to charge an electric car in 10 minutes

A breakthrough in supercapacitors will allow you to charge an electric car in 10 minutes

February 25, 2020 0 By autotimesnews

Specialists from University College London have developed a prototype supercapacitor with high specific power and high energy density at the same time. Usually you can achieve only one thing, writes Science Daily. This is an important technological breakthrough, it will replace modern batteries in electric vehicles and smartphones with supercapacitors, reducing their charging time to several minutes.

Moreover, a device made of several graphene layers can bend at an angle of 180 degrees without losing its performance and does not require a liquid electrolyte, which minimizes the risk of explosion. Even widowed, this material works almost as well as flat, and after 5000 cycles it retains 97.8% of its capacity. These qualities are ideal for new foldable phones or wearable electronics.

The supercapacitor uses an innovative multilayer graphene electrode with pores, the size of which can be changed to more efficiently store energy. This allows you to maximize the energy density to a record high of 88.1 V * h / l – the highest result for carbon supercapacitors.

Existing solutions for superchargers with fast charging have a relatively low energy density of 5-8 V * h / l, while traditional slowly charged, but long-lasting, lead-acid batteries used in electric vehicles usually have 50-90 V * h / l.

That is, by this indicator, the prototype of the new supercapacitor is comparable with the upper limit of the efficiency of the latest lead batteries, but at the same time its specific power is two orders of magnitude higher and reaches 10,000 V / l.

“Imagine if you only need ten minutes to fully charge an electric car or a couple of minutes to the phone, and this energy is enough for the whole day,” said Professor Ivan Parkin, head of the research group.

The supercapacitor uses an innovative multilayer graphene electrode with pores, the size of which can be changed to more efficiently store energy. This allows you to maximize the energy density to a record high of 88.1 V * h / l – the highest result for carbon supercapacitors.

Existing solutions for superchargers with fast charging have a relatively low energy density of 5-8 V * h / l, while traditional slowly charged, but long-lasting, lead-acid batteries used in electric vehicles usually have 50-90 V * h / l.

That is, by this indicator, the prototype of the new supercapacitor is comparable with the upper limit of the efficiency of the latest lead batteries, but at the same time its specific power is two orders of magnitude higher and reaches 10,000 V / l.

“Imagine if you only need ten minutes to fully charge an electric car or a couple of minutes to the phone, and this energy is enough for the whole day,” said Professor Ivan Parkin, head of the research group.