Why This Mars Battery Could Beat Lithium-Ion

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Why This Mars Battery Could Beat Lithium-Ion

Most lithium-ion batteries tap out after just a few hours.

This one just hit 100 hours. And the technology behind it didn't start in a battery lab—it started on Mars with a NASA experiment designed to split CO₂ into carbon and oxygen. In this video, we explore how the system works, how it compares to lithium-ion for grid-scale energy storage, and whether a battery technology born from Mars research could reshape the future of energy storage.

Video Script & Citations:
Script & Citations

Corrections & Clarifications

There's been some confusion in the comments, so here's the short version: think photosynthesis, not a battery in a tank.

Noon's system pulls CO₂ from the air and splits it into solid carbon and oxygen using electricity. The oxygen is released back into the atmosphere, while the carbon stores the energy. During discharge, the carbon is reoxidized inside a solid oxide fuel cell, recombining with oxygen to form CO₂ and generate electricity. Over a full cycle, there is no net carbon released.

The Mars connection is very real. Chris Graves, Noon's co-founder, helped develop NASA's MOXIE experiment aboard the Perseverance rover, which produced oxygen on Mars by splitting CO₂. The underlying chemistry is similar, but the application is entirely different.

When we say "100 hours," we're referring to how long the system can continuously deliver power from a single charge—not its lifespan or degradation rate. The goal is to fill the multi-day backup role currently handled by natural gas peaker plants, complementing lithium-ion batteries rather than replacing them.

What's still unknown publicly is the long-term real-world performance. Round-trip efficiency is currently reported in the 60–80% range, compared to lithium-ion's 85–95%. However, estimated levelized costs remain competitive at long durations. More data should emerge from the company's planned 25 MW / 2.5 GWh pilot project.

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