CarNewsChina reported that CATL chief scientist Wu Kai identified lithium-air technology as a long-term research direction at the 2026 Equipment Powerhouse Forum, while CATL has not announced a 2,000 km production-car target or a commercial launch schedule.
Claims around lithium-air batteries have pointed to electric vehicle ranges of up to 2,000 km and energy density five times that of solid-state batteries. CATL’s nearer-term development priorities remain sodium-ion and all-solid-state batteries.
Lithium-air batteries use metallic lithium as the negative electrode and oxygen from the surrounding environment as the positive reactant. During discharge, lithium reacts with oxygen to form lithium peroxide inside a porous cathode, and charging reverses the reaction.
That chemistry is often linked to a theoretical specific energy of around 3,505 Wh/kg. This figure describes electrochemical potential rather than the performance of a complete automotive battery.
Higher figures approaching 12,000 Wh/kg use a different calculation boundary that excludes oxygen mass. Neither figure represents the energy density of a complete automotive battery because electrolytes, electrodes, protective components and air-management equipment add weight and volume.
Engineering hurdles
Oxygen management, chemical stability, rechargeability and supporting equipment remain major challenges.
A lithium-air battery needs oxygen while limiting exposure to moisture and carbon dioxide, which can trigger unwanted reactions that degrade the lithium anode, electrolyte and cathode. Moisture can react with metallic lithium, while carbon dioxide can form lithium carbonate deposits inside the porous cathode. Those deposits can restrict oxygen transport and reduce usable capacity.
An automotive system would need controlled air intake, filtration and humidity management, potentially with added gas-handling equipment. Those components would add weight and volume while consuming energy.
A 2023 study in the Journal of Energy Storage proposed mechanical balance-of-plant systems for lithium-air vehicles. In that vehicle configuration, the supporting equipment was estimated to consume 5.4% of battery power.
Charging also presents difficulties. Lithium peroxide must be removed from the cathode during charging, and reversing the discharge reaction requires additional energy and can generate reactive oxygen species that attack the electrolyte and other cell components.
These side reactions contribute to capacity loss and limited cycle life. Lithium-metal anodes also face instability during repeated lithium deposition and removal. High initial energy density therefore does not guarantee reliable performance over hundreds or thousands of cycles.
Lower round-trip efficiency increases the energy required to deliver a given amount of usable electricity. Some losses appear as heat, increasing thermal-management demands, while air-handling equipment adds further parasitic consumption.
Specific energy measures how much energy a battery stores per unit of mass, while volumetric energy density measures how much it stores within a given space. Power density determines how quickly it can deliver that energy. Passenger cars need all three.
Research results cited
Several laboratory studies show progress, but none establishes a production-ready passenger-car battery.
A 2024 study published in Advanced Energy Materials by researchers associated with Jilin University and the Chinese Academy of Sciences reported an optimized lithium-air pouch-cell configuration achieving 757.5 Wh/kg with an in-situ gelled polymer electrolyte. The researchers also demonstrated 241 cycles under laboratory conditions of 500 mA/g and 1,000 mAh/g.
A 2023 Science paper from researchers at the Illinois Institute of Technology and Argonne National Laboratory described a solid-state lithium-air architecture using a four-electron reaction to form lithium oxide rather than the more common lithium-peroxide pathway. The battery completed at least 1,000 charge-discharge cycles at room temperature. Its theoretical energy-density potential was estimated at 1,200 Wh/kg, rather than measured as an achieved commercial-cell rating.
A 2025 study by researchers at the University of Science and Technology of China, including Professor Peng Tan, examined how electrolyte oxygen-transport properties influence reaction mechanisms in lithium-oxygen batteries with thick electrodes. The work provided insight into electrode design but did not establish an automotive solution to cathode blockage.
CATL's stated position
Automotive interest in lithium-air batteries predates CATL’s work. IBM launched its Battery 500 project in 2009 with a target of powering an electric car for 500 miles, or 805 km, on a charge, but the program did not produce a commercially available automotive battery.
Lithium-air batteries are also not simply rivals to solid-state batteries, because researchers are investigating solid electrolytes within lithium-air architectures to protect the lithium anode and stabilize electrochemical reactions.
CATL’s broader battery roadmap places sodium-ion and all-solid-state technologies closer to commercialization. Lithium-air still needs substantial progress in durability, power output, air management, efficiency and complete-system packaging before its suitability for passenger cars can be established.
For now, the 2,000 km figure remains a theoretical possibility rather than an automotive capability CATL has demonstrated.
