1. Outlook 2020;Global,2020
2. Automotive Li-Ion Batteries: current Status and Future Perspectives;Ding;Electrochem. Energy Rev.,2019
3. U.S. Geological Survey,2020
4. Average cobalt spot price in the United States from 2008 to 2019 (in U.S. dollars per pound), https://www.statista.com/statistics/339743/average-spot-price-of-cobalt-in-the-us/#:∼:text=In%202019%2C%20the%20average%20spot,37.4%20U.S.%20dollars%20per%20pound.
5. Mineral Commodity Summaries;Jewell,2017