Lithium-ion batteries are 100% recyclable. Tesla claims to do as much and there are other companies getting into the mix.
https://www.vice.com/amp/en/article/xgxke4/when-tesla-says-it-recycles-100-of-its-batteries-what-does-that-mean
https://www.autoweek.com/news/green-cars/amp35803612/battery-recycling/