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Lead.
LEAD
Normally Lithium Ion batteries or Lead-Acid batteries.
No, car batteries use lead for both plates. When charged the positive plate becomes white lead oxide.
Lead is used in car batteries because it stores a charge which can be used to power car electrical systems and accesories
Lead
Lead
Lead.
The common, Lead-Acid car battery contains a lot of lead that can (and MUST) be recycled. Most of the Lead used for fabricating new car batteries comes from recycling. Car battery recycling is quite efficient and therefore, the poisonous lead is mostly kept from polluting the Earth, but some people ignore this and let used batteries go to landfills, which is a no-no!
Antimony - used with lead in in car batteries and in the manufacture of flameproofing compounds
It is used in lead-acid car batteries and used to be added to gasoline, to improve combustion (octane level).
Both plates are lead. Antimony is typically used to alloy with lead to make it structurally stronger.