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Sila Wins $1.4 Billion Pentagon Loan To Scale U.S. Battery Production

Sila has secured a $1.4 billion loan from the U.S. Department of Defense to expand production of its silicon-carbon battery material as the U.S. seeks to reduce reliance on Chinese battery supply chains.

Silicon Anodes Offer Higher Energy Density

The funding comes as U.S. automakers and defense companies face challenges securing battery materials from non-Chinese suppliers. Graphite, which is used in most lithium-ion battery anodes, has a supply chain heavily dominated by Chinese producers.

Sila is among several companies developing silicon-based alternatives to graphite. Other players include Group14 and Amprius.

Silicon anodes can store around 20% to 40% more energy than graphite, potentially enabling longer-lasting batteries or smaller and lighter cells. Those characteristics are particularly attractive for electric vehicles, drones and other mobility and defense applications.

Sila produces its silicon-carbon material at a factory in Moses Lake, Washington, giving it a domestic source that is less exposed to tariffs and geopolitical risks.

The facility began operating in September and currently has annual capacity of about 2 gigawatt-hours of anode material. Sila plans to expand the factory fivefold, which would provide enough material for more than 100,000 EVs.

Pentagon Funding Supports Expansion

In July, Sila raised $300 million to help finance the expansion, bringing its total funding from private investors to more than $1.5 billion, according to PitchBook.

The company already has agreements with Mercedes-Benz and Panasonic. The new Pentagon financing could also help Sila pursue contracts with defense companies as demand for advanced batteries grows.

The Department of Defense announced funding for three other critical-materials companies alongside the Sila loan.

Sunrise Energy Metals will receive a $400 million loan to develop scandium resources, while Niron Magnetics secured $150 million to manufacture rare-earth-free magnets. Strategic Bauxite will receive an $85 million government equity investment to support mining of aluminum-bearing minerals.

Discovered Materials Uses AI To Hunt For Cooler, More Efficient Chips

AI-powered chips generate significant amounts of heat, adding to the energy and cooling demands of data centres. Startup Discovered Materials is using AI to search for new materials that could help make semiconductor components more efficient.

The company recently raised $9 million in a seed round led by Lightspeed India Partners after graduating from Y Combinator. Peak XV Partners and angel investors including Paul Graham, Gokul Rajaram and Thariq Shihipar also participated.

Using AI To Search For New Materials

Founders Advaith Sridhar and Akash Ramdas have built a software pipeline that combines Anthropic models with physics models developed by the company. AI agents generate potential materials, while simulations assess whether those candidates could have useful properties.

Ramdas, who holds a doctorate in materials science from Stanford, previously spent his PhD research making around 20 material predictions a day. Discovered Materials says its AI agents can now generate thousands of candidates daily by running continuously in the cloud.

The company has also released examples of hundreds of new materials and introduced its Material Discovery Bench, designed to evaluate how advanced AI models approach materials research.

Finding A Material Is Only The First Step

Discovered Materials is focusing specifically on the thermal challenges facing semiconductor materials. The startup says it has already identified several materials with properties similar to those used by major chipmakers, although it has not disclosed further details.

Finding a promising candidate, however, does not guarantee that it can be used in a chip. A material might reduce heat generation but prove difficult to manufacture, or have electrical properties that make it unsuitable.

“A material is only useful in the real world if all of them converge at once,” said Hemant Mohapatra, the Lightspeed partner who led the funding round.

Mohapatra expects AI-based material prediction to become increasingly commoditised as models improve. He sees Discovered Materials’ advantage in Ramdas’ expertise and the company’s ability to test candidates experimentally.

Commercialisation Remains A Challenge

When the company identifies valuable materials, it plans to seek patents covering their use in GPUs or the processes needed to manufacture chips with them, then license the technology to chipmakers. Sridhar hopes the startup will have materials worth patenting within the next year.

AI-driven materials discovery, however, has yet to produce major commercial breakthroughs at scale. While companies have identified promising candidates, including rare-earth-free magnets and new semiconductor materials, widespread commercial deployment remains limited.

For Discovered Materials, that highlights a central challenge: generating candidates may be getting easier, but determining which ones work and producing them remains difficult.

As Sridhar acknowledged, some parts of the process still require physical laboratory work. “This is the process that cannot be sped up,” he said.

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