说到稀土

电动车最关键的蓄电池是需要稀土的，所以当年英国承诺2030年将停止生产燃油车引起了轩然大波，因为英国没有稀土，成本不可控。

 

Rare earth metals are used in the magnets of electric vehicles (EVs), but not in lithium-ion batteries. 

 

Explanation

• Magnets

  Rare earth metals are used to make the permanent magnets in the motors of EVs. These magnets are the strongest available, and can produce magnetic fields of over 1.6 Teslas. 

   
• Elements used

  The rare earth metals used in magnets include neodymium, samarium, terbium, and dysprosium. 

   
• Examples of rare earth magnets

  The most common rare earth magnets are neodymium-iron-boron (NdFeB) and samarium cobalt (SmCo). 

   
• Environmental concerns

  The large-scale mining and use of rare earth metals has caused environmental pollution and health issues. 

   
• Alternative materials

  Some manufacturers are reducing the amount of rare earth metals used in their products. Alternative materials like ferrite-based magnets can be used to replace rare earth metals.