KEY POINTS
  • Electric cars, smartphones and other electronic devices are fueling demand for a once-obscure element.
  • Much of the supply comes from Democratic Republic of Congo, and companies worry about shortages.

Demand for batteries in everything from smartphones to electric cars has driven up the price of the once obscure element cobalt, fueling fears of a shortage.

Prices for the metal, which is essential in making lithium-ion batteries, more than doubled in 2017 over the previous year, according to the United States Geological Survey. Researchers haven't yet found a good substitute or way to build batteries without the mineral.