New Battery Technology Could Charge Smart Phones in Minutes

New Battery Technology Could Charge Smart Phones in Minutes

New Battery Technology Could Charge Smart Phones in Minutes

The University of Illinois have developed a three-dimensional nanostructure for battery cathodes, accelerating charging but retaining capacity.

Illinois professor Paul Braun and his research team's findings will be published in the March 20 advance online edition of the journal Nature Nanotechnology.

This development could well be the game changer in battery technology, which has been notoriously slow, falling behind while electronics technology surged ahead in recent decades.

These batteries will be able to quickly store a lot of energy then release it fast, Sony vgp-bps8a battery and recharge, making them desirable for electrical vehicles, medical devices, lasers and military applications.

Besides the specialised applications mentioned above, this could yield phones that charge in seconds or laptops which reach full charge in minutes.

"This system that we have gives you capacitor-like power with battery-like energy," said Braun, a professor of materials science and engineering. "Most capacitors store very little energy. They can release it very fast, but they can't hold much. Most batteries store a reasonably large amount of energy, but they can't provide or receive energy rapidly. This does both."

The new batteries have particular potential for electric vehicles. Acer batbl50l6 Battery life and recharging time are major limitations of electric vehicles, especially when it comes to considerations of long-distance road trips.

The Illinois researchers made their electrode by coating a surface with tiny polystyrene spheres just a few hundred nanometers across, packing the spheres together into a regular lattice structure. Then they filled the gaps between the spheres with nickel and dissolved the polystyrene. That left a three-dimensional metal scaffold, which they thinned down so that the metal made up just 6% of the total volume, and they then coated a thin film of the storage material onto the scaffold. The team used this technique to make cathodes for lithium-ion and nickel-metal hydride batteries, with the former used in many consumer electronics devices such as laptops and cell phones whereas the latter are used in many electric vehicles.

Braun's group wrapped a thin film into three-dimensional structure, achieving both high active volume (high capacity) and large current. They have demonstrated battery electrodes that can charge or discharge in a few seconds, 10 to 100 times faster than equivalent bulk electrodes, yet can perform normally in existing devices.

All of the processes the group used are also used at large scales in industry so the technique could be scaled up for manufacturing.

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