Thursday April 21, 2016

Chemists Create Battery Technology With Off-The-Charts Charging Capacity

Researchers from University of California, Irvine say they have developed a new nano-wire battery that can be recharged hundreds of thousands of times. The technology is still in the development stage but the researchers hope that this could soon be used in a new type of rechargeable battery.

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Scientists have long sought to use nanowires in batteries. Thousands of times thinner than a human hair, they're highly conductive and feature a large surface area for the storage and transfer of electrons. However, these filaments are extremely fragile and don't hold up well to repeated discharging and recharging, or cycling. In a typical lithium-ion battery, they expand and grow brittle, which leads to cracking. UCI researchers have solved this problem by coating a gold nanowire in a manganese dioxide shell and encasing the assembly in an electrolyte made of a Plexiglas-like gel. The combination is reliable and resistant to failure.

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