EcoPro BM, the cathode-manufacturing subsidiary of South Korea's EcoPro, is moving into one of the technology sector's most closely watched frontiers: humanoid robots. On September 6, the company announced its intention to supply battery materials specifically engineered for humanoid robotics applications.

The market opportunity is substantial. Goldman Sachs projects that the humanoid robot market will reach $38 billion by 2035, with more than 1.4 million units shipping annually.

Why batteries are the bottleneck

EcoPro's offering centers on its high-nickel ternary cathodes, materials with nickel content exceeding 90%. These NCM and NCA chemistries deliver significantly more energy per kilogram than the lithium iron phosphate (LFP) batteries that dominate lower-cost applications such as stationary storage. For a robot, the practical benefit is direct: lighter batteries place less strain on joint actuators, enabling longer operating times and more natural movement. This is the same energy-density trade-off that has driven high-nickel chemistries into electric vehicles, where range and weight are similarly constrained — humanoid robots face the same constraints in an even tighter package, since battery mass sits inside a frame that must carry and balance itself.

Solid-state ambitions on a real timeline

EcoPro's plans extend beyond conventional lithium-ion cathodes. The company has spent four years developing components for all-solid-state batteries, including sulfide-based solid electrolytes, optimized cathode materials, and lithium-metal anodes. Its pilot facility currently produces solid electrolytes at a rate of 40 tons per year, and a complete mass production design is ready to deploy once customer demand materializes.

The target for mass production readiness is 2027. Solid-state technology is widely pursued across the battery industry as a path to higher energy density and improved safety by replacing flammable liquid electrolytes, so a 2027 readiness target would position EcoPro among the companies aiming to commercialize the chemistry within this decade.

EcoPro showcased its full lineup of high-nickel and all-solid-state battery systems at InterBattery 2026, one of the industry's major annual exhibitions. The company reported engagement with more than 30 significant industry players at the event.

The Korean conglomerate context

South Korea's largest industrial groups have been moving aggressively into the humanoid robotics space. Samsung and Hyundai — which acquired Boston Dynamics in 2021 — are both investing heavily in robotic platforms that will require advanced battery solutions. EcoPro BM's move positions it as a domestic materials supplier to that ecosystem, and the more than 30 industry engagements reported at InterBattery 2026 are a concrete early indicator of how demand for humanoid-specific battery materials may begin to form.

Source: CryptoBriefing