Porous silicon nanostructured electrode and method
A silicon based micro-structured material and methods are shown. In one example, the silicon based micro-structured material is used as an electrode in a battery, such as a lithium ion battery. A battery, comprising: a first electrode, including a number of porous silicon spheres; a second electrode; and an electrolyte in contact with both the first electrode and the second electrode.
1. A battery, comprising:
a first electrode, including a number of monodisperse porous silicon spheres, wherein the first electrode includes 20% conductive additive mixed with the monodisperse porous silicon spheres, the conductive additive includes 2% by weight carbon nanotubes in carbon black;
a second electrode; and
an electrolyte in contact with both the first electrode and the second electrode.
2. The battery of claim 1 , wherein the second electrode includes lithium metal.
3. The battery of claim 1 , wherein the electrolyte includes a mixture of LiPF 6 , ethylene carbonate and dimethyl carbonate.
4. The battery of claim 1 , wherein the monodisperse porous silicon spheres are between approximately 0.05 micrometer and 2.00 micrometer in diameter.
5. The battery of claim 1 , wherein the monodisperse porous silicon spheres are approximately 200 nanometers in diameter.
6. The battery of claim 1 , wherein the number of monodisperse porous silicon spheres includes substantially crystalline monodisperse porous silicon spheres.
7. The battery of claim 1 , wherein the number of monodisperse porous silicon spheres include a surface area of greater than approximately 200 m 2 g −1 .