TLG - Media, page-6336

Hi Stuey,

The Sila anode composition is set out in the claims of this PCT patent application:

SILA NANOTECHNOLOGIES INC
WO2019079652A1 ANODE ELECTRODE COMPOSITION OF LI-ION BATTERY CELL
https://worldwide.espacenet.com/patent/search/family/066171228/publication/WO2019079652A1?q=WO2019079652A1

1. A Li-ion battery cell, comprising:

anode and cathode electrodes;

an electrolyte ionically coupling the anode electrode and the cathode electrode; and

a separator electrically separating the anode electrode and the cathode electrode, wherein the anode electrode comprises a metal current collector and an electrode coating,
wherein the electrode coating:

(1) comprises Si-comprising active material particles that exhibit an average particle size in the range from about 0.2 microns to about 10 microns and exhibit a volume expansion in the range of about 8 vol. % to about 180 vol. % during one or more charge-discharge cycles of the Li- ion battery cell,

(2) exhibits an areal capacity loading in the range of about 3 mAh/cm 2 to about 12 mAh/cm 2 ,

(3) exhibits a volumetric capacity in the range from about 600 mAh/cc to about 1800 mAh/cc in a charged state of the Li-ion battery cell,

(4) comprises conductive additive material particles, and

(5) comprises a polymer binder that is configured to bind the Si- comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against the volume expansion during the one or more charge-discharge cycles of the Li-ion battery cell while maintaining an electrical connection between the metal current collector and the Si-comprising active material particles.

...

14. The Li-ion battery cell of claim 1,

wherein the conductive additive material comprises carbon nanotubes or carbon nanofibers, and

wherein a total content of the conductive additive material is below about 5 wt. % of the electrode coating and/or below about 5 vol. % of the electrode coating.

I guess the formation of the carbon nanotubes or nanofibres is more complex than graphite. Note that claim 1 does not exclude graphite. Nor does claim 1 limit the amount of conductive additive material.