News Column

Charging portable electronics in 10 minutes

June 12, 2014

Researchers at the University of California, Riverside Bourns College of Engineering, have developed a three-dimensional, silicon-decorated, carbon nanotube for lithium ion battery that could enable charging of portable electronics in 10 minutes, instead of hours.

Lithium ion batteries are the rechargeable battery of choice for portable electronic devices and electric vehicles, but they present problems.

Batteries in electric vehicles are responsible for a significant portion of the vehicle mass. And the size of batteries in portable electronics limits the trend of downsizing, Science Daily reported.

Silicon is a type of anode material that is receiving a lot of attention because its total charge capacity is 10 times higher than commercial graphite-based lithium ion battery anodes. Consider a packaged battery full-cell.

Replacing the commonly used graphite anode with silicon anodes will potentially result in a 63-percent increase in total cell capacity and a battery that is 40 percent lighter and smaller.

Riverside researchers developed a cone-shaped carbon nanotube clusters architecture via chemical vapor deposition and inductively coupled plasma treatment.

Lithium ion batteries based on this architecture demonstrate a high reversible capacity and excellent cycling stability. It demonstrates excellent electrochemical stability and irreversibility even at high charge and discharge rates, nearly 16 times faster than conventionally used graphite based anodes.

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Source: Iran Daily

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