POSCO Future M hard carbon anode plans mark a major step in South Korea’s Sodium-ion Battery materials market. The company plans to complete development by the third quarter of 2027. Then, it aims to begin mass production in 2028. This timeline places POSCO Future M among the early movers in hard carbon anode material for sodium-ion batteries. Moreover, it shows how the company is expanding beyond its current graphite-focused anode business.
POSCO Future M hard carbon anode roadmap
According to industry sources on July 24, POSCO Future M recently finalized development plans for battery cathode and anode materials. It also outlined a broader strategy for next-generation materials. For the first time, the company included a clear development and mass production plan for hard carbon anode material used in sodium-ion batteries.
The company plans to finish development in the third quarter of 2027. After that, it will move into mass production in 2028. In addition, POSCO Future M plans to use existing anode production lines for this expansion. This approach should improve efficiency and support a faster production ramp.
Why POSCO Future M hard carbon anode matters for sodium-ion batteries
Sodium-ion batteries use sodium instead of lithium. As a result, they offer a different supply chain path for battery makers. Sodium is abundant, and that supports easier raw material sourcing. In addition, sodium prices tend to show smaller swings than lithium prices.
The overall battery structure remains familiar. Sodium-ion batteries still use a cathode, an anode, an electrolyte, and a separator. However, the materials inside those components differ. Cathode materials often include sodium iron phosphate and nickel-iron-manganese systems. For the anode, manufacturers mainly use hard carbon instead of graphite.
This shift matters because sodium ions are larger than lithium ions. Therefore, standard graphite does not offer the best fit for sodium-ion movement. Hard carbon, by contrast, has a wider interlayer structure. It also contains fine internal pores. As a result, it can store sodium ions more effectively and support stable battery performance over repeated charging cycles.
POSCO Future M hard carbon anode and production efficiency
POSCO Future M plans to produce hard carbon by adapting existing anode material facilities. Specifically, the company can partially reuse heat-treatment furnaces, reactors, and slurry processing equipment. Therefore, it can reduce new investment needs while building capacity for sodium-ion battery materials.
This production strategy matters because speed and capital efficiency often shape early market leadership. By using current lines, POSCO Future M can shorten its path to commercialization. At the same time, it can build on its experience in battery anode manufacturing.
Hard carbon carries a higher price than graphite. Industry sources say it can cost more than three times as much. However, sodium-ion battery designs can offset part of that difference. For example, manufacturers can use aluminum foil as the current collector. Aluminum foil costs about one-third as much as conventional copper foil. Consequently, the overall material cost structure becomes more attractive.
POSCO Future M hard carbon anode demand outlook
Market forecasts point to rapid growth in sodium-ion batteries by 2028. Research firms expect global sodium-ion battery shipments to exceed 70 gigawatt-hours in 2028. That number gives hard carbon suppliers a sizable target market. In practical terms, producing 1 gigawatt-hour of batteries requires about 1,500 tons of hard carbon anode material.
Based on that ratio, hard carbon anode demand in 2028 could exceed 100,000 tons worldwide. Therefore, the market opportunity for qualified suppliers looks significant. POSCO Future M appears to be positioning itself early to capture part of that demand.
China currently leads the hard carbon supply chain. Companies such as BTR, Shanshan, and Zhongke Electric already mass produce hard carbon anode material. These firms also rank among the major global players in graphite anode materials. China’s hard carbon production capacity is estimated at 80,000 to 90,000 tons per year.
In South Korea, Aekyung Chemical was the first company to disclose hard carbon mass production plans. It is building a pilot line with annual capacity of 1,300 tons. The company is targeting completion within 2026. Against that backdrop, POSCO Future M becomes the second South Korean company to publicly announce both development and mass production plans for hard carbon anode material.
POSCO Future M hard carbon anode strategy in a broader battery push
POSCO Future M included hard carbon in a wider next-generation materials roadmap. The company also outlined plans for LFP cathode material, lithium manganese-rich cathode material, and silicon anode material. Even so, the hard carbon plan stands out because it links directly to the expected growth of sodium-ion batteries in energy storage and other long-life applications.
The company expects sodium-ion batteries to expand battery use cases rather than simply replace lithium iron phosphate batteries. In particular, sodium-ion chemistry can serve applications that need low-temperature performance and long operating life. Therefore, POSCO Future M’s hard carbon roadmap aligns with battery market diversification and future ESS demand.
Overall, POSCO Future M has set a clear timeline. It plans to complete development by the third quarter of 2027 and start mass production in 2028. With that move, the company is strengthening its position in advanced battery materials. Moreover, it is entering a market that could surpass 100,000 tons in demand by 2028.
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