The Problem
Lithium-ion Battery Industry
Cost
Battery Life
Battery Size
Safety
Storage Capacity
The Solution
Why G3 High Energy Sulfur / Graphene Cathode?
High Storage Capacity
High storage capacity increases hours per charge giving more time in between charges
Weight Reduction
Higher capacity results in higher energy density and thus smaller battery form factors
Increased Battery Life
Even with high capacity, battery life is not sacrificed
Why G3 High Energy Sulfur / Graphene Cathode?
Cost
The cost of G3 S/graphene composite will be driven down to <$10/kg
High Storage Capacity
The high storage capacity of G3 S/graphene composite (up to 900 mAh/g) allows the battery to hold more charge and last longer between charging
Economy of Scale
The cost of G3 S/graphene composite can be driven down as the production capacity increases. The process for manufacturing is also scalable
Weight Reduction
Higher capacity results in higher energy density (>400 Wh/kg) and thus smaller battery form factors
High Cycle Efficiency
G3 S/graphene composite has an exceptional Cycle Efficiency even with its high capacity, which mean battery lifetime is not sacrificed
Operability
G3 S/graphene composite has very low BET and is a drop-in solution for cell manufacturers, requiring no additional processing
Benefits
What are the benefits or applications?
Capacity
Conventional cathodes (NCM, LFP, NCA):<250mAh/g
G3 S/graphene composite: >900 mAh /g
Cost
Conventional cathodes (NCM, LFP, NCA):
$20/kg - $60/kg
G3 S/graphene composite: < $10/kg
Energy Density
Conventional Li-ion batteries: < 300Wh /kg
G3 Li - S batteries: >400Wh/kg
Overview
Graphene-Sulfur
The Graphene-Sulfur electrode with a high sulfur composite areal loading (6 mAh/cm2) showed excellent cycle life, delivering a stable ~800 mAh/g capacity at 0.3C
At 0.3C, the data showed ~88% capacity retention for 250+ cycles, and the degradation rate (at 0.3C) is only 0.055%/cycle, suggesting excellent cycle retention for our Graphene-Sulfur cathode.
