MIT's New Lithium Method Cuts Costs in Half

A bathroom DIY project just led to a discovery that could transform how we power our phones, laptops, and electric vehicles.

MIT scientists developed a revolutionary way to extract lithium from rock that works at room temperature, costs half as much as current methods, and doesn't leave toxic waste behind. Professor Yet-Ming Chiang got the idea while renovating his bathroom and noticed how glass etching cream could dissolve silica surfaces.

Since spodumene, the most common lithium-bearing mineral, is mostly made of silica just like glass, the team created a special liquid solution that dissolves the rock's silica at room temperature. They then refined techniques to extract the lithium and aluminum trapped inside.

The current method requires heating rocks to over 1,000 degrees Celsius, which burns enormous amounts of energy and leaves unusable waste. China has dominated global lithium refining because they've been willing to absorb those financial and environmental costs while operating at massive scales.

But lithium deposits aren't rare. The US, Europe, and Australia have abundant supplies locked in rocks, they just haven't had an affordable way to get it out until now.

"We believe this approach is the lowest-energy, lowest-cost way of getting lithium not only out of hard rock, but period," says Chiang. The liquid solution can be reused repeatedly, and the leftover materials can be repurposed instead of discarded.

The Ripple Effect

This innovation could reshape the global battery market in ways that touch everyone. Cheaper lithium extraction means more affordable batteries for everything from smartphones to electric cars, making clean energy technology accessible to more people.

Moving lithium production closer to where batteries are made could also create thousands of jobs in mining and manufacturing. Communities in lithium-rich regions of the US, Europe, and Australia could see economic growth without the environmental damage of traditional extraction.

Chemist Camden Hunt, who worked on the project, puts it simply: "Our central thesis is if you can find an easier way to crack the rock, get lithium out, and make battery-grade lithium salts, you can change the lithium market."

The team is now focused on scaling up the technology to industrial levels. Sometimes the biggest breakthroughs start with the smallest observations, like noticing what bathroom renovation supplies can do.