Monday, October 5, 2009

Nanowire battery

Nanowire battery

It is a lithium-ion battery invented by a team led by Dr. Yi Cui at Stanford University in 2007. Silicon stores ten times more lithium than graphite and it allows a greater energy density on the anode. The high surface area of Silicon allows for fast charging and discharging.

The battery only reached 10xdensity on the first charge and leveled out at 8x density on subsequent charges.

Two processes of manufacturing nanowires are suspension and deposition. A suspended nanowire bombarded with high-speed atoms or molecules to reduce its diameter. A deposited nanowire is fabricated on a surface consisting of conducting substance such as plastic or glass.

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