Lithium sulfur batteries are also interesting. They're cheaper, lighter, and the cells don't use cobalt, manganese, or nickel. The problem to date has been poo

Lithium sulfur batteries are also interesting. They're cheaper, lighter, and the cells don't use cobalt, manganese, or nickel. The problem to date has been poor cycle life but people are working on it: - https://oxisenergy.com/technology/ https://oxisenergy.com/technology/ - https://oxisenergy.com/wp-content-uploads-2020-11-press-release-nov-2020-final-pdf-2/ https://oxisenergy.com/wp-content-uploads-2020-11-press-rele... - https://theconversation.com/batteries-made-with-sulfur-could-be-cheaper-greener-and-hold-more-energy-129135 https://theconversation.com/batteries-made-with-sulfur-could... - https://advances.sciencemag.org/content/6/1/eaay2757 https://advances.sciencemag.org/content/6/1/eaay2757