The Types dimension of the market taxonomy distinguishes among NCM (nickel‑cobalt‑manganese), NCA (nickel‑cobalt‑aluminum), and high‑nickel NCM variants (e.g., NCM 811). NCM, with a balanced Ni:Co:Mn ratio, supplies roughly 55 % of the market, favored for its moderate cost and stable thermal performance across EV and ESS platforms. NCA, contributing about 30 %, offers higher specific energy, making it the chemistry of choice for premium‑segment EVs where range is paramount. High‑nickel NCM, capturing the remaining 15 %, is emerging as a cost‑optimization pathway, reducing cobalt dependence while maintaining energy density, though it imposes tighter control on material purity and process stability. These type‑specific shares reflect manufacturers' strategic trade‑offs between performance, material cost, and safety, directly influencing the aggregate demand for nickel within the ternary battery ecosystem.