The ten years meme is based in a false premise. The article even says Australian known sources are only utilised at 14% and yet predicts a long term supply problem without asking what other sources might be discovered.
From the article A lithium-ion car battery with a 100 kg cathode requires 6–12 kg of cobalt and 36–48 kg of nickel so work on 10kg without improvements and same article says at current economic models only 10 exp 8 tonnes economically extractable. So 10 exp 10 batteries. (1000 kg per tonne) 10,000,000,000 batteries. One car for everyone alive... And that's before normal levels of production efficiency, scavenging nice cobalt rich sources like old batteries or even the intent of the article: new sources and new technologies.