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View Full Version : New Graphene Supercapacitor for Electric Cars in the Near Future?



500eee
11-13-2013, 03:41 AM
Something I read that I thought I'd share! :encouragement:

A team of South Korean scientists has developed a new graphene supercapacitor that can store almost as much energy as a lithium-ion battery, but charge in only 16 seconds. This makes it an ideal material to store braking energy and could be exactly what the electric car industry needs.

Scientists from Gwangju Institute of Science and Technology in South Korea made the breakthrough by creating an especially porous form of graphene. (See below.) Incredibly, a single gram of this specialized graphene has the same amount of surface area as a basketball. This greatly increased surface area enables the supercapacitor to store far more energy than previous versions of the material, which had been keeping graphene supercapacitors out of the running as an alternative to lithium-ion batteries for electric cars. Because they don't use chemicals, graphene supercapacitors also have a much longer life than lithium ion batteries. Oh, and did I mention how fast it charges? That's right; I did. 16 Seconds!

Finding success in the lab and bringing a product to market are two very different things, so it's unclear how quickly we might see this impressive technology at work in electric cars. The South Koreans say that these "supercapacitor energy storage devices… can be scaled up for manufacturing in the near future for electric vehicle applications."

So that's something. But only time will tell whether these supercapacitors take over before Tesla manages to build its famously ambitious lithium-ion factory. [MIT Tech Review]

Whole original article with links:

http://gizmodo.com/these-new-graphene-supercapacitors-could-finally-power-1463259679

rnddude
11-13-2013, 11:23 AM
As an engineer that has worked with Lithium ion product designs, Super-capacators WILL start showing up on vehicles very soon, probably first on mild hybrids. Even current designs have the very relevant ability to very rapidly receive and store electricity, and just as quickly release it. This plays well with regenerative-braking systems in capturing braking energy, and then releasing it back for acceleration boosting. This is a perfect solution for large vehicles like trucks and SUV's and is very cost-effective. We will likely initially see vehicles with smart alternators that can be used as the regenerative capture/return element, paired with super-capacators as the storage medium. Even on a full electric they would have merit as it would take stress off of the battery pack.

Tweak
11-13-2013, 01:08 PM
I've read of the usefulness and amazing properties of graphene before, really exciting to see how it will be implemented as time rolls on.