CATL Developing 12,000 Wh Per Kg Lithium-Air Battery

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It has become an article of faith around CleanTechnica’s magnificent titanium and carbon fiber headquarters that the batteries powering the cars and trucks (and airplanes and ships) of the future are in laboratories today. The internal combustion engine has been smoothed and polished into the docile, reliable power source we take for granted today, but it was not always so.

Early automobiles were snorting, cantankerous beasts that tended to shake themselves to pieces after a few thousand miles. That’s the reason so many manufacturers only offered a 12 month, 12,000 mile warranty — they knew the limitations of their products. Today, a quarter of a million miles of faithful service is not uncommon.

The Battery Of  The Future

Now that CATL, the largest battery manufacturer in the world, has begun mass production of sodium-ion batteries, it is turning its attention to the batteries it will manufacture in the future. According to Car News China, Wu Kai, the chief scientist at CATL, told the 2026 Powering The Nation forum in China that the company’s long-term focus is on lithium-air battery technology.

Why is that big news? Because the theoretical density of lithium-air batteries is 12,000 Wh/kg. That, dear reader, is roughly the same energy density as gasoline. Take a moment to ask yourself what having batteries that can hold has much energy per pound as gasoline would do to the EV revolution. Assuming they are not OMG expensive, they would obliterate conventional cars and trucks like ocean waves washing away a sandcastle.

Unlike traditional lithium-ion batteries, which rely on heavy metal compounds like nickel, cobalt, and manganese to store lithium ions, lithium-air batteries utilize lithium metal as the anode and oxygen from the air as the cathode reactant. This design significantly reduces weight and complexity, earning the new technology the nickname “breathable batteries.”

Current lithium-air prototype batteries have reached an energy density of more than 1,200 Wh/kg, which is four times as much as most batteries in commercial use today and significantly higher than the 500 Wh/kg expected from solid-state batteries. For the record, CATL is pursuing solid-state battery development as its middle range objective, with lithium-air on the far horizon.

US Researchers Advance Lithium-Ion Technology

So what’s the projected timeline for these wondrous batteries of the future that could power a car for a thousand miles or more on a single charge? Interesting Engineering has some insights on that question. It notes that the concept of lithium-air batteries dates back to the 1970s but practical applications have faced a number of hurdles. Sensitivity to moisture and carbon dioxide in the air, as well as issues with catalyst stability and cycle life, are the primary concerns.

However, recent breakthroughs have breathed new life into this nascent technology. In 2024, a joint research team from the University of Illinois Chicago, Argonne National Laboratory, and California State University, Northridge, successfully demonstrated a lithium-air battery capable of over 700 cycles in an air-like environment. Then, in 2025, Argonne National Laboratory and the Illinois Institute of Technology developed a prototype that achieved 1,200 Wh/kg with a 1,000 cycle lifespan at room temperature.

Early prototypes of lithium-air batteries had a limited lifespan because chemical reactions generated lithium super-oxide or lithium peroxide, compounds that restricted total energy efficiency. In 2025, the researchers were able to successfully create a four-electron chemical reaction pathway at room temperature. That advance allowed the prototype batteries to form and decompose lithium oxide, which expanded the available energy storage significantly.

To address safety and longevity, the researchers replaced flammable liquid electrolytes with a solid-state composite matrix made of ceramic-polyethylene oxide polymer infused with lithium-rich nano-particles. The solid layer isolated the reactive processes, stopped leaks, and stabilized the cells during high-energy cycles.

CleanTechnica readers, who are all well above average, will note basic research on lithium-air batteries is being done in the US, which is currently opposed to all science that does not advance the fortunes of fossil fuel companies. If and when lithium-air batteries become available, it will be China that reaps the rewards, while the MAGA maniacs fuss and fume about why the US is falling far behind in so many areas.

They will blame people of color, immigrants, anyone who is not a white Christian nationalist, DEI, climate science — anybody other than themselves, with their slavish obedience to the gospel according to the Heritage Society. The latest news is that all federally funded research grants must now be reviewed and approved by the White House. In the old Soviet Union, Communist Party apparatchiks had similar power over manufacturing. It didn’t work out well for the USSR and will not work out for the US. Political dogma is not a substitute for applied scientific research, as America will learn in the years and decades to come.

CATL is not waiting for America to get its act together. It has a three-part strategy for moving forward, starting with a reliance on mature technologies like NMC and LFP — and now sodium-ion — to meet the demands of today’s customers. Solid-state batteries will be the focus in the medium term, while exploring the theoretical limits of lithium-air technology will be the focus for 2030 and beyond.

Is there any guarantee that CATL will eventually perfect lithium-ion batteries and start manufacturing them in bulk? No, there is not. But only a fool — or a MAGA moron — would bet against it.