Hard Carbon Anode Market

The global hard carbon anode market size was USD 0.15 Billion in 2025 and is expected to register a revenue CAGR of 29.8% during the forecast period. Market revenue growth is supported by CATL confirming in April 2026 that it had overcome hard carbon gas generation, extreme water control, aluminum foil adhesion and self-forming anode system challenges, clearing the path for full-scale mass production of its Naxtra sodium-ion battery by the end of 2026, alongside a 60 gigawatt-hour multi-year sodium-ion supply agreement with energy storage integrator HyperStrong that CATL has described as the largest sodium-ion deal recorded to date. BYD's construction of a 30 gigawatt-hour sodium-ion battery plant in Xuzhou, begun in January 2024 in partnership with two- and three-wheeler manufacturer Huaihai, is creating a second major source of hard carbon anode demand independent of CATL's passenger-vehicle-focused Naxtra program. China's GB 38031-2025 electric vehicle battery safety standard, which CATL's Naxtra became the first sodium-ion battery to pass, is giving automakers a regulatory benchmark that is accelerating sodium-ion and hard carbon anode qualification timelines. These are some of the key factors driving revenue growth of the market.

Biomass-based hard carbon derived from coconut shells, bamboo and straw, resin and petroleum-based hard carbon engineered for consistent large-volume production, and lignin-based hard carbon derived from wood pulp byproducts are the commercial categories that constitute the hard carbon anode market, with cell manufacturers increasingly weighing feedstock consistency against raw material cost as sodium-ion production scales from pilot to gigawatt-hour volume. For instance, in April 2026, CATL, China, confirmed that it had systematically resolved hundreds of engineering challenges tied to hard carbon anode integration, including gas generation within the hard carbon material itself, enabling its Naxtra sodium-ion battery to move from laboratory breakthrough to gigawatt-hour-scale industrialization.

However, the hard carbon anode supply chain remains fragmented and lacks a standardised processing pathway, contributing to inconsistent cell yields during mass manufacturing, a limitation industry analysts including Minmetals Securities cite in projecting that full-scale cost parity between scaled sodium-ion production lines and established lithium iron phosphate lines will not materialise until 2027. Coconut shell feedstock supply is a specific constraint, with China's Hainan province supplying 99 percent of domestic coconut shell output yet meeting only a fraction of the tonnage China's sodium-ion cell makers will eventually require, forcing reliance on imports from Indonesia, the Philippines, Sri Lanka and India. Hard carbon's lower volumetric energy density relative to graphite, requiring roughly 30 percent more anode volume for equivalent capacity in some cell designs, continues to pressure sodium-ion pack-level energy density against lithium iron phosphate alternatives. These factors substantially limit hard carbon anode market growth over the forecast period.

Based on precursor type, the global hard carbon anode market is segmented into biomass-based hard carbon, resin-based hard carbon, petroleum and asphalt-based hard carbon, lignin-based hard carbon, and other precursor types. The biomass-based hard carbon segment commands the largest revenue share because it is the most commercially proven precursor route, led by Kuraray's coconut shell-derived KURANODE material, produced through carbonization, alkali treatment, high-temperature purification and chemical vapor deposition to achieve an initial coulombic efficiency exceeding 95 percent and cycle life beyond 3,000 cycles. Biomass precursors including coconut shell, bamboo, straw and starch offer low feedstock cost and broad availability relative to synthetic alternatives, though coconut shell specifically faces the supply constraints affecting Hainan-sourced material described elsewhere in this report.

The resin and petroleum-based hard carbon segment is expected to register a rapid revenue growth rate in the global hard carbon anode market over the forecast period. Established Chinese lithium-ion anode producers including BTR New Material and Shanshan Technology are adapting resin-based and asphalt-based hard carbon processes, originally developed for lithium-ion anode manufacturing, to sodium-ion cell qualification, offering more consistent, synthetically controlled feedstock than variable biomass sources can guarantee at the gigawatt-hour volumes CATL and BYD's production commitments require. The segment's growth reflects cell manufacturers' preference for feedstock consistency over raw material cost as sodium-ion production moves from pilot lines to mass manufacturing.

• 01What is the global hard carbon anode market size in 2025 and what CAGR is expected during 2026-2035?
• 02What four engineering barriers did CATL confirm it overcame in April 2026 to enable Naxtra sodium-ion mass production?
• 03What 60 gigawatt-hour supply agreement did CATL sign with HyperStrong, and why does CATL describe it as the largest sodium-ion deal to date?
• 04What is the scale and focus of BYD's Xuzhou sodium-ion battery plant, and how does it differ from CATL's Naxtra program?
• 05Why does China's Hainan coconut shell supply constrain the biomass-based hard carbon segment, and what alternative feedstocks are producers pursuing?
• 06What Lignode hard carbon partnership did Stora Enso sign with Altris in June 2025, and what happened to Stora Enso's earlier partnership with Northvolt?
• 07What production capacity milestones has Shengquan Group disclosed for its bio-based hard carbon anode business?
• 08Why does Minmetals Securities project that sodium-ion and lithium iron phosphate production line cost parity will not occur until 2027?
• 09Why is the resin and petroleum-based hard carbon segment expected to grow faster than the larger biomass-based segment?
• 10Why does China's concentration of sodium-ion cathode and anode material manufacturing matter for automakers and energy storage developers outside Asia Pacific?

This report covers the global hard carbon anode market across all major segments and geographic regions. Primary research combines panel conversations with industry experts and is cross-referenced against company annual reports, government agency data, and regulatory filings. All market size figures use 2025 as the base year with a 2026-2035 forecast period.