Booming electric vehicle sales have spurred a growing demand for lithium. But the light metal isn’t abundant. In 2020, researchers reported a major step toward tapping a virtually limitless lithium supply. ScienceMagArchives
Booming electric vehicle sales have spurred a growing demand for lithium. But the light metal, which is essential for making power-packed rechargeable batteries, isn't abundant. Now, researchers report a major step toward tapping a virtually limitless lithium supply: pulling it straight out of seawater.
Lithium's scarcity has raised concerns that future shortages could cause battery prices to skyrocket and stymie the growth of electric vehicles and other lithium-dependent technologies such as Tesla Powerwalls, stationary batteries often used to store rooftop solar power. To get around this problem, researchers led by Yi Cui, a materials scientist at Stanford University, looked for ways to make electrode materials more selective. First, they coated an electrode with a thin layer of titanium dioxide as a barrier. Because lithium ions are smaller than sodium, it is easier for them to wriggle through and into the electrode sandwich.
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