The Super Supercapacitor [video]
focusforwardfilms.com
The Super Supercapacitor [video]
1–10 of 53 posts
Re: The Super Supercapacitor [video]
#2Very cool tech, and the manufacturing process looks doable as well. :-) Except for us poor mac-heads, how is iTunes going to make me some Graphene??
I was a bit disappointed that there weren't any numbers in the film, so I looked them up: http://www.extremetech.com/extreme/122763-graphene-supercapa...
Energy density (storage capacity) does seem to be in range of Lithium Ion batteries, better than some, but still around a factor 7 or so worse than the highest density there (but slowest to discharge). Considering the extra effort managing the batteries (Boeing, Tesla,...) you might just come out ahead already.
On the other hand, Graphene apparently also makes Lithium-Ion batteries significantly better: http://www.extremetech.com/computing/105343-graphene-improve...
Re: The Super Supercapacitor [video]
#3Combine the graphene supercapacitor with
Korea Advanced Institute of Science and Technology
OLEV and we would soon have clean transportation in the cities. Imagine what that would do for air quality!
Say that you build inductive charging points in the lanes before stop lights. The car/bus stops and charges the supercapitor. EV battery problem solved with little extra weight needed by the car.
Sure a range extending hybrid car with a engine would be needed in the start until more charging points would be available on the country side.
OLEV http://txchnologist.com/post/43160353907/wireless-electricit... https://www.youtube.com/watch?v=UsEYped_gZc
Re: The Super Supercapacitor [video]
#4I haven't seen any mention of the efficiency. Does anyone have any numbers comparing a regular battery to a graphene supercapacitor?
Re: The Super Supercapacitor [video]
#5Sounds like Cheap and Powerful, So what is stopping this from mass production? My Phone could help with a charging time of less then a minutes!.
Re: The Super Supercapacitor [video]
#6Shiny movie and very easy to understand but forgive me if I'm skeptic about something without any supporting numbers or scientific background
Re: The Super Supercapacitor [video]
#7Previous discussion (same video, on hackaday):
http://news.ycombinator.com/item?id=4958875
Another: http://news.ycombinator.com/item?id=3723943
And another: http://news.ycombinator.com/item?id=3710054
All 3 are linked to different articles.
Re: The Super Supercapacitor [video]
#8In the video they show that graphene can be thrown away in compost bin safely, how is it related to all the warnings we have about nanomaterials being dangerous?
Re: The Super Supercapacitor [video]
#9Sounds like Cheap and Powerful, So what is stopping this from mass production? My Phone could help with a charging time of less then a minutes!.
From what I understand, it's fairly expensive. It's tough to make a profit on a phone when the battery costs $500. Costs are surely coming down but I think we'll have to wait before it hits the mass markets. From the wikipedia page on graphene [1]: "On the other hand, the price of epitaxial graphene on SiC is dominated by the substrate price, which is approximately $100/cm2 as of 2009."
[1] http://en.wikipedia.org/wiki/Graphene#Occurrence_and_product...
Re: The Super Supercapacitor [video]
#10In the video they show that graphene can be thrown away in compost bin safely, how is it related to all the warnings we have about nanomaterials being dangerous?
The warnings about nanomaterials are about their applications, not their mere existence. (The rational warnings, anyway.) Graphene is just a form of carbon, like graphite or diamond, neither of which is thought to be particularly hazardous.