Why is lithium ion battery so expensive?

Related questions

1. Who is making solid state batteries?
2. Are Tesla batteries solid state?
3. How big are the batteries in a Tesla?
4. What is the latest battery technology?
5. Why is cobalt used in batteries?
6. Do solid state batteries contain lithium?
7. Do solid state batteries use cobalt?
8. Why lithium ion batteries are so expensive?
9. Why do you need an electrolyte in a battery?
10. Why are electric car batteries so expensive?

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