Nanowire battery

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A nanowire battery is a lithium-ion battery with a stainless steel anode covered in silicon nanowires. It replaces the traditional graphite anode. Silicon, which stores ten times more lithium than graphite, offers the potential for increased energy density, thus reducing the mass of the battery. The large surface area further increases the anode's power density, allowing for fast charging and current delivery. The anode was invented by a team led by Yi Cui at Stanford University in 2007.


Silicon anodes had been dismissed because the silicon tended to crack and become unusable as it swelled by 400% with lithium during charging.

In September 2010, the Stanford team demonstrated 250 charge cycles at above 80 percent of initial storage capacity. One potential use for these batteries is in electric vehicles, which require thousands of charge cycles.[1]

Commercialization was originally expected to occur in 2012,[2] but was later deferred to 2014.[3]

Cui's company, Amprius, shipped a related device with silicon and other materials in 2013.[3]

Canonical announced on July 22, 2013, that its Ubuntu Edge smartphone would contain a silicon-anode lithium-ion battery.[4]

See also[edit]


  1. ^ Garthwaite, Josie (September 15, 2010). "Amprius: Building a Better Battery, from the Anode Up". Retrieved 2011-09-26. 
  2. ^ Lyle (December 21, 2007). "Interview with Dr. Cui, Inventor of Silicon Nanowire Lithium-ion Battery Breakthrough". Retrieved 2011-09-26. 
  3. ^ a b Newman, Jared (2013-05-23). "Amprius Begins Shipping a Better Smartphone Battery |". Retrieved 2013-06-04. 
  4. ^ "Ubuntu Edge". July 22, 2013. Retrieved 2013-07-22. 

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