March 10, 2010

A New Charging Method Could Greatly Reduce Battery Recharge Times

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A new charging method that should be capable of charging a Lithium-ion battery in a fraction of the time needed when using traditional methods.

This charging method uses an additional applied oscillatory electric field. Our simulation results show that this charging method offers a great reduction in the average intercalation time for Li+ ions, which dominates the charging time. The oscillating field not only increases the diffusion rate of Li+ ions in the electrolyte but, more importantly, also enhances intercalation by lowering the corresponding overall energy barrier.

These simulations suggest a new charging method that has the potential to deliver much shorter charging times, as well as the possibility of providing higher power densities.


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