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macrumors 65816
Mar 20, 2013
lol capacitors can store energy fast and also dump it just as fast as they stored them.

This brings me back to the days of using 5 farad caps in my car stereo system!

You should also add to the title that these super batteries last 30 seconds


macrumors G3
Original poster
Oct 27, 2009

Technical specifications:
In her project summary, Khare has clearly mentioned her objectives, methods and results.

Her goal was to design and synthesise a super capacitor with increased energy density while maintaining power density and long cycle life.

She designed, synthesised and characterised a novel core-shell nanorod electrode with hydrogemated TiO2(H-TiO2) core and polyaniline shell. H-TiO2 acts as the double layer electrostatic core.

Good conductivity of H-TiO2 combined with the high pseudo capacitance of polyaniline results in significantly higher overall capacitance and energy density while retaining good power density and cycle life.

This new electrode was fabricated into a flexible solid-state device to light an LED to test it in a practical application.

Khare then evaluated the structural and electrochemical properties of the new electrode. It demonstrated high capacitance of 203.3 mF/cm2 (238.5 F/g) compared to the next best alternative super capacitor in previous research of 80 F/g, due to the design of the core-shell structure.

This resulted in excellent energy density of 20.1 Wh/kg, comparable to batteries, while maintaining a high power density of 20540 W/kg. It also demonstrated a much higher cycle life compared to batteries, with a low 32.5% capacitance loss over 10,000 cycles at a high scan rate of 200 mV/s.

Therefore, she successfully managed to introduce this new energy device to replace conventional batteries in flexible electronic devices.


macrumors regular
Mar 31, 2009
One of the many reasons I love my GS3... Use it all day with whatever settings I like and then by mid afternoon turn it off, swap in my extra battery, good to go.

Takes about 45s though ... 50% longer :p


macrumors G5
Jul 29, 2011
Somewhere Back In The Long Ago
It's actually possible to charge a Lithium Polymer cell very much faster than any magsafe or similar adaptor currently supplied by Apple or any third party vendor can.

The downside is that you'd kill the battery in 6 months or so. There is also the potential for overheating, swelling and damage to the Mac itself.

What is really needed now is a jump forward in battery technologies, and that's being worked on.

Dr McKay

macrumors 68040
Aug 11, 2010
I thought we could charge batteries much faster before anyway? And the reason we don't was to preserve the life of it?


macrumors 6502a
Aug 30, 2012
Long Island, NY
Considering I charge my phone before going to bed, this doesn't affect me.
And I'm sure most consumer batteries would explode if you tried charging them in 30 seconds, so work on batteries first, then charging methods.
I want to see long-distance, efficient, and cheap wireless charging. Like beaming megawatts to the moon. Where's Tesla when you need him...

Nifty invention though, makes me wonder what I'm doing with my life :rolleyes:
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