Lithium Titanate (LTO) — Zero-Strain Fast-Charge Anode
Lithium titanate (Li4Ti5O12, spinel structure) is the primary inorganic titanium compound for fast-charge battery anodes, operating at a flat 1.55 V plateau vs. Li/Li+ with virtually zero lattice strain across deep cycles. SEMITECH supplies LTO at D50 0.3–1.5 µm, BET 10–30 m²/g, theoretical capacity 175 mAh/g, and cycle life exceeding 20,000 full cycles. Upstream feedstocks are anatase TiO2 (≥99%) and battery-grade lithium carbonate (≤50 ppm Na), calcined at 750–850°C under air. Tightening lithium carbonate supply from South American brine operations has pushed LTO spot premiums 15–25% above 2023 lows — supply chain transparency is now a procurement differentiator.
Barium Titanate (BTO) — High-Permittivity Piezoelectric Ceramic
Barium titanate (BaTiO3) is the benchmark inorganic titanium compound for multilayer ceramic capacitors (MLCCs), piezoelectric actuators, and PTC thermistors. SEMITECH BTO is produced via wet-chemical co-precipitation from barium chloride and titanium isopropoxide, yielding D50 0.1–0.5 µm with BET 8–15 m²/g and purity ≥99.5%. In-house XRD confirms tetragonal phase ratio ≥95% at room temperature, with Curie point at 120°C and relative permittivity of 8,000–15,000 at 1 kHz. Barium carbonate feedstock prices are currently ~USD 480/t, up 12% year-on-year on MLCC restocking demand tied to automotive electronics recovery in Q1 2026.
Titanium Nitride (TiN) — Gold-Hued PVD Hard Coating Powder
Titanium nitride (TiN) is the most commercially mature inorganic titanium compound for PVD hard coatings on cutting tools, molds, and precision components. SEMITECH TiN (purity ≥99%, D50 1–3 µm) is produced by direct nitridation of sponge titanium at 1,200°C under flowing N2. Key properties: Vickers hardness ~2,300 HV, melting point 2,930°C, electrical resistivity 20–25 µΩ·cm, and characteristic golden reflectance (~70% at 580 nm). For sputtering target qualification, bulk density ≥4.8 g/cm³ and oxygen content ≤0.3 wt% are mandatory quality gates. Upstream Ti sponge prices have stabilized at ~USD 10.5/kg (CIF China), supporting predictable TiN contract pricing through Q3 2026.
Titanium Diboride (TiB2) — Ultra-Hard Electrode Ceramic
Titanium diboride (TiB2) is the hardest inorganic titanium compound in this portfolio (~3,400 HV) while simultaneously exhibiting metallic electrical conductivity (resistivity 9–12 µΩ·cm), making it uniquely suited for aluminum smelting cathodes, EDM electrodes, and wear-resistant composites. SEMITECH TiB2 is synthesized by carbothermal reduction of TiO2 and B2O3 at 1,500–1,600°C, delivering D50 2–5 µm, BET 3–8 m²/g, purity ≥99%, and free boron ≤0.2 wt%. Melting point 3,225°C and oxidation resistance to ~1,000°C (via self-passivating TiO2/B2O3 surface layer) support sustained high-temperature service. Boron feedstock prices remain elevated (+18% YoY) driven by competing EV cathode-coating demand.
Supply Chain & Specification Comparison
All four inorganic titanium compounds share TiO2 as the common upstream precursor, but diverge in co-reagent cost exposure, synthesis temperature, and downstream end-market. The table below maps each compound from raw ore tier through key specification parameters to primary application, enabling buyers to benchmark supply chain risk and qualification requirements side-by-side.
| Compound | Formula | Key Feedstocks | Synthesis Route | D50 (µm) | BET (m²/g) | Purity | Hardness (HV) | Primary Application |
|---|---|---|---|---|---|---|---|---|
| Lithium Titanate (LTO) | Li4Ti5O12 | TiO2 (anatase) + Li2CO3 | Solid-state calcination, 800°C/air | 0.3–1.5 | 10–30 | ≥99% | ~— | Fast-charge battery anode |
| Barium Titanate (BTO) | BaTiO3 | BaCl2 + Ti(OiPr)4 or BaCO3 + TiO2 | Co-precipitation or solid-state, 900–1,100°C | 0.1–0.5 | 8–15 | ≥99.5% | ~— | MLCC, piezoelectric actuator, PTC |
| Titanium Nitride (TiN) | TiN | Ti sponge + N2 gas | Direct nitridation, 1,200°C | 1–3 | 2–6 | ≥99% | ~2,300 | PVD hard coating, sputtering target |
| Titanium Diboride (TiB2) | TiB2 | TiO2 + B2O3 + C | Carbothermal reduction, 1,550°C | 2–5 | 3–8 | ≥99% | ~3,400 | Cathode, EDM electrode, composite |
SEMITECH’s inorganic titanium compound portfolio spans electrochemical cycling stability in LTO to extreme hardness in TiB2 — all traceable to a common TiO2 upstream supply chain, enabling cost-transparent, multi-compound procurement from a single qualified source.
Frequently Asked Questions
+What distinguishes inorganic titanium compounds from organic titanates?
Inorganic titanium compounds are crystalline ceramic or nitride/boride solids with defined lattice structures and high-temperature stability exceeding 1,000°C, unlike organic titanates (alkoxides, chelates) which are liquid or low-melting coupling agents used in sol-gel chemistry and surface modification. LTO, BTO, TiN, and TiB2 are structural and functional materials, not chemical intermediates — they do not hydrolyze or decompose under ambient processing conditions.
+How does TiO2 feedstock price volatility flow through to finished compound costs?
TiO2 is the shared upstream precursor for all four compounds. Spot rutile prices ranged USD 1,100–1,500/t during 2023–2025, driven by ilmenite ore supply from Australia and South Africa. A 10% TiO2 swing typically adds 3–8% to LTO or BTO powder cost; TiN and TiB2 absorb less proportionally due to higher energy and co-reagent costs dominating their total cost of goods. Monitoring TiO2 contract indexes is a reliable leading indicator for this entire product group.
+What particle size should I specify for LTO in high-rate fast-charge cells?
For ≥4C fast-charge LTO anodes, specify D50 0.3–0.8 µm with BET 15–25 m²/g. Smaller particles shorten Li+ solid-state diffusion paths (D ≈ 2×10⁻¹³ cm²/s in LTO spinel), enabling sub-10-minute charge at high current densities. Particles below 0.2 µm increase electrolyte reactivity and first-cycle loss; particles above 2 µm limit rate capability. For stationary storage at ≤1C, D50 1.0–1.5 µm is sufficient and reduces powder cost.
+Is barium titanate subject to RoHS or REACH SVHC restrictions?
BaTiO3 (CAS 12047-27-7) is not currently listed as a REACH SVHC or restricted under RoHS Annex II as of early 2026. However, barium compounds as a class remain under ECHA review; buyers should request a current SDS and confirm SVHC status before final product qualification. SEMITECH provides full CoA, SDS, and country-of-origin declaration with every shipment to support regulatory dossier submissions.
+Can titanium nitride powder be used for thermal spray coatings, not just PVD?
Yes. TiN powder with D50 15–45 µm and near-spherical morphology is suitable for HVOF and plasma spray, depositing 50–300 µm coatings on large components where PVD chamber geometry is impractical. Fine PVD-grade TiN (D50 1–3 µm) is cold-pressed into sputtering targets. Specify your deposition method — PVD target, HVOF, or plasma spray — when requesting a quote, as morphology and flowability requirements differ significantly.
+What is the typical lead time and minimum order for titanium diboride?
Standard TiB2 (D50 2–5 µm, ≥99% purity) ships within 2–4 weeks from stock with MOQ 5 kg for R&D; and 25 kg for production runs. Custom grades — ultrafine D50