Extending Cycle Life of Nanostructured Silicon Anodes

J. Golightly, M. Isaacson, J. Bonilla, F. Chiu
Lockheed Martin Space Systems Company, US

Keywords: nanostructured materials, lithium ion batteries, electrodes

Summary:

Lockheed Martin Space Systems Company’s Advanced Technology Center has been investigating porous electrodes using nanostructured silicon as the active material to replace graphite as the anode in lithium ion batteries. The ultra high theoretical capacity of silicon makes it an attractive choice for use in next generation lithium ion batteries. However, silicon has traditionally exhibited poor cycle performance. By using nanostructured silicon, many of the failure mechanisms that govern capacity loss can be mitigated.