ENERGY
Our Technology
Our new innovative battery cells are based on a revolutionary
Si@void@C micro-reactor electrode technology
developed by the Illinois Institute of Technology (IIT), Chicago, Illinois.
The performance metrics offered by Silicoat technology:
Figure Caption: Specific capacity and coulombic efficiency of Our Si@void@C half cells in coin cell format under fast charge/discharge conditions for 1,000 cycles. Note that the specific capacity (420 mAh/g) of our Si anode after 1,000 cycles at the current density of 8,000 mA/g is significantly higher than that of brand-new graphite anodes, which exhibit below 74 mAh/g at the current density of 3,700 mA/g.
(a)
(b)
Figure Caption: The specific capacity of Silicoat Si@void@C half cells as a function of cycle numbers. The same cycle performance data are plotted in two ways: (a) the specific capacity calculated based on the weight of Si only in the electrode, and (b) the specific capacity calculated based on the weight of all materials in the electrode (i.e., Silicoat Si@void@C + carbon black (CB) + PAA binder). Note that the specific capacities of Si@void@C half cells at the electrode level are 880 mAh/g-Si+PAA+CB and 624 mAh/g-Si+PAA+CB at the 1st and 500th cycles, respectively. These specific capacities are superior to those of graphite anodes at the electrode level (typically < 326.6 mAh per gram of Graphite+CB+PVDF). As such, the specific capacities of our Si@void@C anodes at the electrode level are 169% and 91% higher than those of graphite anodes at the 1st and 500th cycles, respectively.
Figure Caption: Silicoat anode materials provide a “drop-in” solution to replace the state-of-the-art graphite anodes with no need to change the existing battery manufacturing equipment and production lines.
Why is Silicoat
Si@void@C anode better?
Nano-channeled voids
Nano-Si Core
Carbon Shell
Our Silicoat anode active material particles (Si@void@C) with nano-channel voids
Typical yolk-shell structure with bulky voids
V.S.
Bulky voids
Nano-Si Core
Carbon Shell
100 cycles
200 cycles
500 cycles
1000 cycles
Figure Caption: Photos of the decrimped SilicoatSi@void@C electrodes after different charge/discharge cycles, showing no Li plating at the areal current density of 6.8 mA/cm2