Lithium, cobalt and Metal hydride are messy and Lithium, since it is so cheap, it is not recycled for reuse. Though hydrogen is leaky, clunky and expensive to g

Lithium, cobalt and Metal hydride are messy and Lithium, since it is so cheap, it is not recycled for reuse. Though hydrogen is leaky, clunky and expensive to get from source to engine, it will be a better investment in reduced CO2 emission, a reduced need for lithium salt "flats" and cobalt mines. (Ever seen a cobalt mine?) scorching the earth surface. Lithium to cheap to recycle: https://waste-management-world.com/a/1-the-lithium-battery-recycling-challenge https://waste-management-world.com/a/1-the-lithium-battery-r... "...Recycled lithium is as much as five times the cost of lithium produced from the least costly brine based process. It is not competitive for recycling companies to extract lithium from slag, or competitive for the OEMs to buy at higher price points from recycling companies. " Cobalt Mines and their problems: https://www.washingtonpost.com/news/in-sight/wp/2018/02/28/the-cost-of-cobalt/?utm_term=.11e1d3b1c0dc https://www.washingtonpost.com/news/in-sight/wp/2018/02/28/t... Goro Nickel Mine image: http://www.sulphuric-acid.com/sulphuric-acid-on-the-web/acid%20plants/Goro%20Nickel%201.jpg http://www.sulphuric-acid.com/sulphuric-acid-on-the-web/acid...