Within the Biomass-based Hard Carbon Materials market, taxonomy by type distinguishes three production pathways, each influencing material properties and cost structure. The first pathway, pyrolysis‑derived hard carbon, subjects raw biomass (e.g., rice husk, corn stover) to thermal decomposition at 800–1200 °C in inert atmosphere, yielding a dense, low‑defect carbon matrix suited for high‑energy‑density batteries. The second, hydrothermal carbonization (HTC)‑derived hard carbon, operates at 180–250 °C under pressure, preserving oxygen‑functional groups that enhance wettability and sodium‑ion diffusion, thereby targeting sodium‑ion battery anodes. The third, chemically activated hard carbon, applies post‑treatment with agents such as KOH or ZnCl₂ to develop microporosity; this type is preferred for supercapacitor electrodes where surface area directly translates to capacitance. Sub‑categories further differentiate feedstock origin—agricultural residues, wood waste, and algae—each impart distinct elemental composition and ash content, which affect yield and downstream processing costs. Understanding these type distinctions is essential for forecasting capacity expansion and aligning R&D with the application‑driven market taxonomy.