. @benchmarkmin breakdown of #Quantumscape & solid state batteries incoming.
If this succeeds commercially, it will not result in additional lithium demand, despite ‘anode-less*’ approach
*in-situ lithium metal being deposited and creating the anode internally on first charge
If this succeeds commercially, it will not result in additional lithium demand, despite ‘anode-less*’ approach
*in-situ lithium metal being deposited and creating the anode internally on first charge
Anodeless: #Quantumscape could save anywhere between 10-15% cost by eliminating the need for an anode in manufacturing.
Many different cost models per chemistry can alter %s.
... but large contract anodes range from $6/kg to $16/kg (synthetic graphite) @benchmarkmin
Many different cost models per chemistry can alter %s.
... but large contract anodes range from $6/kg to $16/kg (synthetic graphite) @benchmarkmin
What could result in 🔼 lithium demand is #Quantumscape’s electrolyte / separator: likely to be a “lithium stuffed garnet”which uses one or more of:
> lithium (hydroxide, carbonate)
> zircon
> Tantalum
> Lanthanum (rare earth series)
All speciality chemicals, not cheap
> lithium (hydroxide, carbonate)
> zircon
> Tantalum
> Lanthanum (rare earth series)
All speciality chemicals, not cheap
To make this special membrane central to #Quantumscape’s plan, it would start with:
1. Making a Lithium Slurry
A slurry from a “source of lithium” from the following:
“LiF, LiCl, LiBr, LiOH, Li2CO3, Li2O, Li2O2, lithium-stuffed garnet, Li(s), and combinations thereof”
1. Making a Lithium Slurry
A slurry from a “source of lithium” from the following:
“LiF, LiCl, LiBr, LiOH, Li2CO3, Li2O, Li2O2, lithium-stuffed garnet, Li(s), and combinations thereof”
2. Milling the lithium slurry
Using classic fine grinding mill techniques such as jet mill, ball milling, etc
Using classic fine grinding mill techniques such as jet mill, ball milling, etc
The milling appears a key step and depending on what #QuantumScape choose, a different product will come out the other end Ie particle size.
3. Pasting the lithium slurry onto a substrate and baking it
Like classic way anodes are baked into copper, #Quantumscape’s lithium slurry will pasted onto either:
“Al, Ni, Cu, Au, Ag, Fe, steel, stainless steel, Li, alloys thereof”
Like classic way anodes are baked into copper, #Quantumscape’s lithium slurry will pasted onto either:
“Al, Ni, Cu, Au, Ag, Fe, steel, stainless steel, Li, alloys thereof”
4. Burning off the film
Once the lithium slurry is cast onto the substrate a film is formed. This film must be burned off potential in two steps 1) calcined off at 300C to 1,000C and then 2) sintering at 1100C for 15 mins to 2 hours
Once the lithium slurry is cast onto the substrate a film is formed. This film must be burned off potential in two steps 1) calcined off at 300C to 1,000C and then 2) sintering at 1100C for 15 mins to 2 hours
5. Creation of a sintered lithium stuffed garnet film
A new material that has a porosity of less than 10% by volume
A new material that has a porosity of less than 10% by volume
Footnote of interest: #Quantumscape membranes are baked on a “setter plate” made of the following raw materials:
“YSZ, graphite, Mg—SZ, zirconia, SiO2, Al2O3, nickel, lithium-stuffed garnet, a sacrificial lithium-stuffed garnet film, LiAlO2, LiLaO2, or Li2ZrO3.”
“YSZ, graphite, Mg—SZ, zirconia, SiO2, Al2O3, nickel, lithium-stuffed garnet, a sacrificial lithium-stuffed garnet film, LiAlO2, LiLaO2, or Li2ZrO3.”
The #Quantumscape patents basically show a number of possible production processes. The combos centre on
1. Input raw materials to lithium slurry
2. The choice of milling
1. Input raw materials to lithium slurry
2. The choice of milling
Time for a ☕️
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