The world contains vast quantities of lithium, an integral element in electric vehicle batteries. And though lithium is commonly mined from hard rock, the majority of the world’s lithium reserves are actually found in brine, extremely salty water beneath the Earth’s surface.
Today, brine mining involves evaporating the brine in massive, extravagantly colored pools over a series of about 18 months, leaving high concentrations of lithium behind. It’s a simple but inefficient process that takes up vast swaths of land and is ecologically disruptive.
As automakers around the world struggle to meet extraordinarily ambitious electric vehicle production targets, there’s growing interest in doing things differently.
“The auto industry requires a 20x increase in lithium supply, and there’s just no way to achieve that type of growth with conventional technologies,” said Dave Snydacker, founder and CEO of Lilac Solutions.
Lilac is one of a number of companies piloting a set of new and largely unproven technologies called direct lithium extraction, or DLE, which could increase the efficiency and decrease the negative externalities of the brine mining process.
Instead of concentrating lithium by evaporating brine in large pools, DLE pulls the brine directly into a processing unit, puts it through a series of chemical processes to separate the lithium, then injects it back underground. This process produces battery-grade lithium carbonate or hydroxide in a matter of hours, without the need to transport concentrated brine to a separate processing facility.
DLE could also help jump-start the domestic lithium mining market. Today, most lithium brine mining takes place in the Salar de Atacama, an expansive salt flat in northern Chile that contains the highest quality lithium brine in the world. But DLE technologies require much less land and can help unlock resources in areas where the brine contains less lithium and more impurities.
North American companies Lilac Solutions, EnergyX and Standard Lithium are exploring lithium resources in areas such as Arkansas’ Smackover Formation, California’s Salton Sea and Utah’s Great Salt Lake, as well as abroad in Argentina, Bolivia and Chile. The Chilean government has even announced that all new lithium projects will be required to use DLE technology.
“So the timing is right and ripe for this to see the light of day very, very soon,” said Amit Patwardhan, CTO of EnergyX.
Direct lithium extraction company EnergyX is building demonstration plants in Argentina, Chile, California, Utah and Arkansas.
EnergyX
Doing things differently
In a world before electric vehicles, traditional methods of brine mining and hard rock mining more than sufficed to meet global lithium demand.
“The world didn’t need DLE for the last 50 years. Lithium’s primary use was industrial — ceramics, glass and lubricants,” said Robert Mintak, CEO of Standard Lithium.
But with demand for EVs and the lithium-ion batteries that power them booming, now there’s a supply crunch.
“Over the last 10 years, 90% of new lithium production has come from hard rock projects. But hard rock projects are increasingly expensive as we go into lower grade resources. And if you add up all the hard rock projects, there’s just not enough resource out there to meet automaker goals. It’s the brine resources that are large enough to electrify the vehicle industry,” Snydacker said.
DLE is already being used to some extent in both Argentina and China, where the companies Livent and Sunresin are implementing commercial tech that combines DLE with traditional evaporation pond operations.
These companies both rely on a technology called adsorption, the only commercially proven approach to DLE. In this process, lithium molecules in the brine adhere to an adsorbant substance, removing them from surrounding impurities. But experts say that stripping the lithium from the adsorbents requires a lot of fresh water, a big problem considering many of the world’s best brine resources are in arid areas.
Livent’s most recent sustainability report indicates that it uses 71.4 metric tons of fresh water per metric ton of lithium carbonate equivalent, or LCE, produced. Lilac reported that in pilot testing it uses between 10 and 20 metric tons of fresh water, while EnergyX says it uses less than 20 metric tons.
China-based Sunresin says that it recycles all of its fresh water, and that its newer projects will operate without evaporation ponds.
But a host of other companies are now getting into the industry, testing out alternative technologies which they claim will not only eliminate evaporation ponds altogether, but increase yields while lowering energy and fresh water requirements.
New players
Bay Area-based Lilac Solutions is using a technology called ion exchange. It’s currently piloting its tech in Argentina in partnership with Australian lithium company Lake Resources.
“With the Lilac ion-exchange bead we’ve developed a ceramic material. This ceramic selectively absorbs lithium from the brine while releasing a proton. Once the lithium is absorbed into the material, we then flush the lithium out of the bead using dilute acid and that produces a lithium chloride concentrate which can be easily processed into battery grade chemicals,” Snydacker explained.
Lilac Solutions is developing a direct lithium extraction facility in Argentina in partnership with Australian lithium company Lake Resources.
Lilac Solutions
Lilac expects to have its first commercial-scale module operating before the end of 2024. The company is backed by BMW and the Bill Gates-funded Breakthrough Energy Ventures, and Ford has signed a nonbinding agreement to buy lithium from its Argentina plant.
EnergyX, which is based out of both San Juan, Puerto Rico, and Austin, Texas, uses a combination of technologies that it can tailor to the specific brine resource. Step one is traditional adsorption, followed by a method known as “solvent extraction,” in which the concentrated brine is mixed with an organic liquid. The lithium is then transferred to the organic before it’s stripped free and concentrated. Membrane filtration is the final stage, which removes all remaining impurities.
“So you see these all these loops and synergies that come out of combining these technologies. And that is another big differentiator in what EnergyX does and what really drives the cost of the technology much lower compared to anybody else,” said Patwardhan.
EnergyX is building demonstration plants with undisclosed partners in Argentina, Arkansas, Chile, California and Utah, and is aiming to have the first two up and running by the end of this year. Recently, the company secured $50 million in funding from GM to help scale its tech.
Vancouver-based Standard Lithium also has big backers. The public company’s largest investor is Koch Industries, and it’s been running a demonstration plant in South Arkansas for the last three years, producing lithium at a preexisting bromine plant.
The company uses both ion-exchange and adsorption technologies, depending on the resource. It expects to begin construction on a commercial-scale DLE facility next year and is expanding into Texas as well.
“We have an opportunity as we expand from Arkansas to Texas to be the largest producing area for lithium chemicals in North America, utilizing in an area that’s not under water stress, that has a social license to operate,” said Mintak.
Companies such as Standard Lithium, which are leaning into the U.S. market, stand to benefit from the Inflation Reduction Act, which ties electric vehicle subsidies to domestic sourcing of battery materials. Automakers can also receive the full EV credit if they source from countries that have free trade agreements with the U.S., such as Chile.
While Chile has announced that all new lithium projects in the country will be required to use DLE technologies, it has not announced what companies it will be partnering with for these new projects.
Neighboring Bolivia was considering technology from both EnergyX and Lilac Solutions to help unlock the country’s vast but largely undeveloped lithium resources. The government ultimately tapped a consortium of Chinese companies, led by battery giant CATL, to spearhead DLE efforts in its salt flats.
Most new lithium supply will continue to come from hard rock projects for the rest of this decade, Snydacker said. “But by the end of this decade, we’ll see very large-scale brine projects coming online …” he predicted. “And going out into the next decade, this technology will provide a majority of new supply.”
Overall, lithium production from DLE is projected to grow from about 54,000 metric tons today to 647,500 metric tons by 2032, according to Benchmark Mineral Intelligence. That’s forecast to be worth about $21.6 billion.
“But when we place it in relative terms against the rest of the global market, that only represents around 15% of total supply,” said James Mills, principal consultant at Benchmark Mineral Intelligence. “So we’re still going to have to rely on traditional forms of production for the lithium units, whether it’s evaporation ponds or hard rock mining.”
Perplexity AI is in late-stage talks to raise $500 million at a $14 billion valuation, a source familiar with the situation confirmed to CNBC Monday.
Accel, the Palo Alto-based venture capital firm, will lead the round, according to the source, who spoke anonymously because the round is not yet finalized. The Wall Street Journal first reported on the late-stage numbers.
The funding is on the lower end of Perplexity’s planned raise, which CNBC reported in March. During those early-stage talks, Perplexity was looking to raise between $500 million and $1 billion in funding at an $18 billion post-money valuation, per a source familiar.
Perplexity has just under $100 million in annual recurring revenue, or ARR, the source told CNBC in March.
Perplexity has been in the middle of the generative AI boom that began in late 2022 with the launch of OpenAI’s ChatGPT, and it’s betting big on its upcoming AI agent web browser, called Comet. But Perplexity faces increasing competition in the AI search market.
In March, Anthropic launched its web search product, allowing its chatbot Claude to display real-time search results to a subset of users.
Last fall, OpenAI launched a search feature within ChatGPT, its viral chatbot, that positioned it to better compete with Perplexity, as well as leading search engines such as Google and Microsoft‘s Bing.
Google has released AI Overviews within its search product as well, though it sparked controversy over high-profile errors soon after its release.
Apple CEO Tim Cook, center, watches during the inauguration ceremonies for President Donald Trump, right, and Vice President JD Vance, left, in the rotunda of the U.S. Capitol in Washington, Jan. 20, 2025.
Wall Street and Apple investors cheered the pause on Chinese tariffs. Apple stock was up 6% in trading on Monday, versus 3% for the Nasdaq.
“I spoke to Tim Cook this morning, and he’s going to, I think, even up his numbers,” Trump said in the Oval Office. “$500 billion, he’s going to be building a lot of plants in the United States for Apple. And we look forward to that.”
Apple previously said in February it would spend $500 billion to expand many of its operations in the U.S., including assembling AI servers in Houston.
Any cooling of a U.S.-China trade war is expected to boost Apple, which does the majority of its device production in the country, and also counts the region as its third-largest by sales.
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Still, it’s not clear how much Monday’s announcement immediately helped Apple.
In April, most of Apple’s most important products, such as smartphones and computers, received exemptions on some of the highest 145% tariffs, but there are still 30% tariffs on Chinese imports even after Sunday’s deal. Apple still faces 10% tariffs in some of its secondary production locations, such as India and Vietnam.
The Trump administration wants Apple to bring device production, including iPhone manufacturing, to the United States, a move that many experts believe would be unlikely and expensive.
Earlier this month, Cook told investors about the company’s tariff strategy on an earnings call. He said that Apple is currently sourcing American-bound products from production locations in Vietnam and India, but didn’t want to speculate beyond June, calling the situation “difficult to predict.”
HANGZHOU, CHINA – JUNE 3, 2024 – The NVIDIA logo and the Apple logo are pictured in Hangzhou city, Zhejiang province, China, June 6, 2024. On June 5, Eastern time, Nvidia’s stock market value exceeded $3 trillion, officially surpassing Apple’s market value and becoming the world’s second largest technology giant by market value. It is worth noting that in just over 3 months, Nvidia’s market value soared from $2 trillion to $3 trillion. (Photo credit should read CFOTO/Future Publishing via Getty Images)
Cfoto | Future Publishing | Getty Images
Global technology and chip stocks rallied on Monday after the U.S. and China agreed to pause most tariffs on each other’s goods.
Technology stocks — such as semiconductor firms and smartphone makers — have been hit hard as trade tensions between the world’s two largest economies threatened to disrupt supply chains and hurt some of the biggest U.S. businesses.
But investors breathed a sigh of relief after talks between the U.S. and China over the weekend yielded a temporary pause in “reciprocal” tariffs.
In the U.S., Nvidia, which still faces a number of restrictions on the chips it is allowed to ship to China, was around 4% higher in premarket trade, while AMD was up 5%. Broadcom was also around 5% higher, along with Qualcomm.
Other companies in the semiconductor supply chain also jumped. Marvell, which last week postponed a previously scheduled investor day due to macroeconomic uncertainty, surged 7.5% in premarket trade.
Taiwan Semiconductor Manufacturing Co., the world’s largest chipmaker, saw its U.S.-listed shares jump around 4% in the premarket. TSMC’s Taiwan-listed stock closed before the tariff announcement.
In Europe, ASML, a supplier of critical machinery required to manufacture the most advanced chips, rallied 4.5% in early trade. Infineon was also sharply higher.
Semiconductors and some electronics received an exemption from President Donald Trump’s reciprocal tariffs last month, but the U.S. signaled the reprieve was temporary and that these products could still be in line for special duties.
Investors have been concerned about the impact on major tech stocks, especially those with exposure to China such as Apple and Amazon, whose shares have been under pressure this year.
Amazon was up more than 8% in premarket trade Monday. Many sellers on Amazon rely on Chinese products.
U.S.-listed Chinese tech stocks also surged. Chinese e-commerce giants Alibaba and JD.com were higher, alongside internet firm Baidu.
“With US/China clearly on an accelerated path for a broader deal we believe new highs for the market and tech stocks are now on the table in 2025 as investors will likely focus on the next steps in these trade discussions which will happen over the coming months,” Daniel Ives, global head of technology research at Wedbush Securities, said in a note on Monday.
“This morning is a huge win for the bulls and a best case scenario post this weekend in our view.”
