| IsawYoshi said:
I let the thought grow for a minute :D It looks cool, and could be really revolutionary. The question really is how expencive it is. I didn't hear that they said any price for this stuff, but if it is at a repectable price, then I really think these guys have stuck gold. |
Hehe, you punny.
Well, with a piece of graphene oxide the size of a stamp and what a tenth of a milimeter thin, they were able to power a led for 5 minutes. By comparison, the iphone 3G battery has these dimensions:
115.5 x 62.1 x 12.3 mm = 88.222 cubic cm
In comparison this graphene oxide sheet used was
30 x 25 x 0.1 mm = 75 cubic mm
So, with the graphene oxide sheet fit into an iphone 3G battery, you could power
88,222/75 = 1176 LEDs for 5 minutes.
Anyone good in electrical science can compare the wattage of LEDs to the wattage of iPhones? Anyways I'll try.
From yahoo answers:
Low current LED's go down to 1mA at 1.8V (red) for their rated output, which is 1.8V * 0.001A = 2mW or 0.004W.
1176 LEDs would consume 4.7W
What is the wattage of an iPhone?
http://www.anandtech.com/show/4971/apple-iphone-4s-review-att-verizon/15
| Power Consumption Comparison | ||
| Apple iPhone 4 (AT&T) | Apple iPhone 4S (AT&T) | |
| Idle | 0.7W | 0.7W |
| Launch Safari | 0.9W | 0.9W |
| Load AnandTech.com | 1.0W | 1.1W |
| Maps (Determine Current Location via GPS/WiFi) | 1.3W | 1.4W |
Let's go with 1.3W for the iphone.
4.7W / 1.3W = 3.61
From these newb calculations, it looks like the graphene oxide battery would be 3.61 times as efficient as the current iPhone battery.
The cost? Well at 1500$-3000$ per metric ton which si then diluted into a base solution (not sure the cost on that) and repeatedly applied to dirt cheap CDs, this can't be costly I don't think.
