Jonathan Huang, Scott Lee, Ankit Sharma, and David Sung
Silicon Graphite Anodes for Lithium-Ion Batteries
- In order for the automotive industry to transition from diesel fuel to electric for a more sustainable future, we must develop a rechargeable lithium ion battery with a high enough capacity for long-range travel
- Our company FARADAY uses patented silicon-graphite technology to produce state-of-the-art EV batteries with longer mileage and lower cost
- Production Target: 250,000 battery packs per year
Targeted price per battery pack: $9,476.60
Yearly profitability: $52,750,000
- Mixing: Active material, binders, additives, and solvent are mixed to make an anode and cathode slurry
- Coating: Slurries are coated onto copper and aluminum foil, respectively
- Drying: Coated foils are dried to remove remaining solvent
- Calendering: Dry foils are compressed, cleaned, and statically discharged
- Slitting: Anode and cathode foils are cut into smaller rolls for individual cells
- Vacuum Drying: Rolls are dried one final time to remove liquid impurities
**The negative and positive electrodes are then assembled into cell batteries
- With our patented silicon-based battery, we developed a lighter and cheaper EV battery that directly competes with Tesla
Cell Assembly (stacking, packaging...)
Cell Finishing (roll pressing, degassing...)
- Although silicon is known to have a high energy density, it is very susceptible to degradation. Silicon expands up to 4x its original size when fully charged, causing stress and degradation of the anode material
- Our R&D team has created a Silicon-Graphite composite with a high energy density that maintains integrity over multiple charging cycles.
Objective and Production Target
- In order for EV to compete with and overtake diesel in the automotive industry, battery technology must push through the $100/kWh barrier
- We are looking into redesigning our battery to pack more fuel cells and increase silicon concentration in order to achieve the $100/kWh benchmark