【蓄電】20〜30秒で充電できるバッテリー 米高校生が実験に成功 「Intel Foundation Young Scientist Award」を受賞−Intel ISEF 2013
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0022名無しのひみつ
2013/05/28(火) 14:04:06.63ID:to/C0KzqTechnical 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.
http://www.dnaindia.com/scitech/1837128/report-18-year-old-eesha-khare-invents-a-revolutionary-device-that-can-charge-a-phone-in-20-seconds
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