Early adopters of using silicon to boost capacity in Li-ion batteries are still using 96% graphite in the anode. This pie chart shows that these anodes contain just 4% silicon oxide.
Tesla has an estimated cost of $6,918 to build the battery pack for the Tesla Model 31. That same battery pack, if made with just graphite, would cost around $5,000. So, for a 10% increase in capacity, they are willing to spend 36% more.
At Paraclete Energy, we believe a 10% increase in capacity shouldn’t cost more than 10% more.
Let’s break this down more. The following chart compares anode materials for the Tesla Model 3 battery pack.
|Initial Capacity (Ah)||12222||13431||13431|
|Battery pack cost||$5,070||$6,918||$5,241|
As you can see, we are also approaching the USABC goal of $100 per kWh. This is with using only 4% silicon in the anode. If we used more, say 15% of PE’s SM-Silicon™ in the anode, that would drop to $99 per kWh, achieving the USABC goal, as well as increasing the range to 400 miles.