This new tech may make electric vehicles charge quickly, run longer

A team of chemists, engineers and physicists worked on the new design, which uses an innovative graphene electrode material with pores that can be changed in size to store the charge more efficiently.
By : IANS
| Updated on: 18 Feb 2020, 14:20 PM
File photo
File photo
File photo
File photo

Imagine needing less than 10 minutes to fully-charge your electric car or just two minutes for your phone and it lasting the whole day. This could soon be possible with a next-generation energy storage technology that researchers have developed.

While at the proof-of-concept stage, it shows enormous potential as a portable power supply in several practical applications including electric vehicles, phones and wearable technology

The discovery, published in the journal Nature Energy, overcomes the issue faced by high-powered, fast-charging supercapacitors -- that they usually cannot hold a large amount of energy in a small space.

Similar Cars

Find More Cars
Tata Tigor Ev (HT Auto photo)
Tata Tigor Ev
Electric | Automatic
₹11.99 - 13.14 Lakhs**Ex-showroom price
Tata Altroz Ev (HT Auto photo)
UPCOMING
Tata Altroz Ev
 
₹12 - 15 Lakhs* *Expected Price
Tata Nexon Ev (HT Auto photo)
Tata Nexon Ev
Electric | Automatic
₹13.99 - 16.85 Lakhs**Ex-showroom price
Tata Nexon Ev Max (HT Auto photo)
Tata Nexon Ev Max
Electric | Automatic
₹17.74 - 19.24 Lakhs**Ex-showroom price
Mg Zs Ev (HT Auto photo)
Mg Zs Ev
Electric | Automatic
₹21 - 24.68 Lakhs**Ex-showroom price
Mg Zs Ev 2022 (HT Auto photo)
Mg Zs Ev 2022
Electric | Automatic
₹21.99 - 25.88 Lakhs**Ex-showroom price

"Our new supercapacitor is extremely promising for next-generation energy storage technology as either a replacement for current battery technology, or for use alongside it, to provide the user with more power," first author of the study Zhuangnan Li from University College London.

FOLLOW US:Stay Updated with latest content - Subscribe us on
FOLLOW US:Stay Updated with latest content - Subscribe us on

"We designed materials which would give our supercapacitor a high power density -- that is how fast it can charge or discharge -- and a high energy density -- which will determine how long it can run for. Normally, you can only have one of these characteristics but our supercapacitor provides both, which is a critical breakthrough," Li added.

"Moreover, the supercapacitor can bend to 180 degrees without affecting performance and doesn't use a liquid electrolyte, which minimises any risk of explosion and makes it perfect for integrating into bendy phones or wearable electronics," Li said.

A team of chemists, engineers and physicists worked on the new design, which uses an innovative graphene electrode material with pores that can be changed in size to store the charge more efficiently.

This tuning maximises the energy density of the supercapacitor to a record 88.1 Wh/L (Watt-hour per litre), which is the highest ever reported energy density for carbon-based supercapacitors, the study said.

Similar fast-charging commercial technology has a relatively poor energy density of 5-8 Wh/L and traditional slow-charging but long-running lead-acid batteries used in electric vehicles typically have 50-90 Wh/L.

While the supercapacitor developed by the team has a comparable energy density to state-of-the-art value of lead-acid batteries, its power density is two orders of magnitude higher at over 10,000 Watt per litre.

"Successfully storing a huge amount of energy safely in a compact system is a significant step towards improved energy storage technology. We have shown it charges quickly, we can control its output and it has excellent durability and flexibility, making it ideal for development for use in miniaturised electronics and electric vehicles," senior author and Dean of UCL Mathematical & Physical Sciences, Professor Ivan Parkin, said.

The researchers made electrodes from multiple layers of graphene, creating a dense, but porous material capable of trapping charged ions of different sizes. They characterised it using a range of techniques and found it performed best when the pore sizes matched the diameter of the ions in the electrolyte.

The optimised material, which forms a thin film, was used to build a proof-of-concept device with both a high power and high energy density.

First Published Date: 18 Feb 2020, 14:20 PM IST
Recommended For You
View All
NEXT ARTICLE BEGINS

Please provide your details to get Personalized Offers on

Choose city
+91 | Choose city
Choose city
Choose city
By clicking VIEW OFFERS you Agree to our Terms and Privacy Policy

Dear Name

Please verify your mobile number.

+91 | Choose city