3 Matching Annotations
  1. May 2019
    1. Lithium-ion batteries are key components for most consumer electronics, from cellphones and laptops to electric cars.

      the ions in the lithium is the competent that is found in phones.

    1. Cobalt's primary ores are cobaltite (CoAsS) and erythrite (Co3(AsO4)2). Cobalt is usually recovered as a byproduct of mining and refining nickel, silver, lead, copper and iron.

      this is where cobalt comes from