The Carboxymethyl Cellulose for Lithium-ion Batteries segmentation by application isolates four functional roles that collectively drive market volume. Cathode binders represent the largest share, accounting for roughly 45 % of total demand; CMC improves electrode cohesion, enables high areal loading, and reduces impedance, directly influencing cell energy density and cost structure. Anode binders follow with an estimated 30 % share; here CMC’s water‑soluble nature supports silicon‑graphite composites, mitigating volumetric expansion and extending cycle life, which is critical for next‑generation high‑capacity packs. Electrolyte additives contribute about 15 %; CMC functions as a viscosity modifier and film‑forming agent that stabilizes the solid‑electrolyte interphase, thereby enhancing safety margins and low‑temperature performance. The remaining 10 % pertains to separator coatings, where thin CMC layers impart mechanical strength and uniform pore distribution, improving ionic transport while suppressing dendrite penetration. Together these application sub‑segments define the market’s revenue composition, with each proportion reflecting the relative R&D investment, production scale, and OEM adoption rates across battery manufacturers.