'Super capacitor' that charges mobile in 20 seconds!
khare' has invented a device which can pack lot of energy in the tiny
space. And also it can store energy thats enough to light a light
emitting diode[LED]. And if we fix it to the battery of normal phone
it can reacharge the battery in 20seconds or even less. It can also
charge the battary 10,000 times when our normal battery losses its
ability in 1,000 times. So this tiny capacitor called as 'supper
capacitor'. She is studying in california. And she won price money of
50,000$ from intel science and engineering fair for her super
capacitor. Now google has shown intrest in her invention and came
front to sponcer her invenstion.
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 highcapacitance of 203.3 mF/cm2
(238.5 F/g) compared to the next best alternative super capacitor in
previous researchof 80 F/g, due to the design ofthe 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.
So it is not far away to charge our mobile phone in 20
seconds.
