Aluminum-doped lithium phosphate (electrolyte additive)

Description

1. Product Overview
Aluminum-doped lithium phosphate (Li₁₋ₓAlₓPO₄) is a high-purity electrolyte additive engineered to enhance the thermal stability and cycle life of lithium-ion batteries, particularly those using high-voltage cathodes (NCM, NCA). Its primary industrial application is as a bifunctional additive in liquid electrolytes, where it scavenges harmful HF and PF₅ decomposition products while forming a robust, low-impedance CEI (cathode electrolyte interphase). With lithium-ion safety and longevity under high-voltage operation becoming strategic imperatives for EV and ESS markets, this additive delivers a critical performance differentiator at a low total cost of ownership.

2. Key Specifications & Technical Characteristics

• Chemical composition: Li₁₋ₓAlₓPO₄ (x = 0.02–0.05, tunable)

• Purity level: ≥99.95% (metals basis, excluding Al doping agent)

• Physical form: Fine white powder, agglomerate-free

• Particle size (D50): 200–400 nm (PSS or SEM verified)

• Specific surface area (BET): 12–18 m²/g

• Moisture content: ≤50 ppm (Karl Fischer)

• Impurity control: Fe ≤10 ppm, Na ≤5 ppm, Cl ≤3 ppm

• Packaging options: 1 kg vacuum-sealed aluminum foil bags; 20 kg HDPE drums with desiccant; custom IBC totes

• Shelf life: 24 months when stored below 30°C in original unopened packaging under inert gas

3. Core Industrial Applications

• Primary industries: Electric vehicle (EV) Li-ion cell manufacturing; stationary energy storage systems (ESS); high-voltage consumer electronics (drones, power tools)

• Operational use cases: Added at 0.5–2.0 wt% to standard LiPF₆/carbonate electrolytes for cells operating at ≥4.45 V vs. Li/Li⁺

• Performance advantages: Reduces transition metal dissolution (Ni, Co, Mn) by >60% vs. baseline; extends cycle life by 35–50% at 45°C; suppresses gas generation (gassing reduced by ~70%)

• Efficiency/cost benefit: Enables higher cell voltage without costly electrolyte redesign – reduces LCOE for ESS by ~12% through extended calendar life

4. Competitive Advantages

• Quality consistency: Each batch triple-tested via ICP-OES, XRD (phase purity >99%), and moisture analysis; statistical process control (SPC) charts included with COA

• Supply reliability: Dual-source raw material strategy; 2,000 kg/month dedicated production line; safety stock held in regional hubs (Asia, EU, NA)

• Logistics capability: UN-certified hazardous packaging (Class 9, PG III); temperature-controlled shipping options

• Price competitiveness: $380–450/kg (volume-dependent) – 15–20% below equivalent Japanese/Korean additives at same purity tier

• Sustainability: Solvent-free dry synthesis process; 85% less wastewater vs. conventional phosphate routes

• Technical support: Full electrolyte formulation guidance, compatibility matrix for 15+ solvent systems, and failure analysis assistance provided by PhD-level application engineers

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 5 kg (R&D/trial) | 100 kg (commercial qualification)

• BULK 20MT loading capacity: 20 MT per 20-ft container (as 400 × 50 kg fiber drums on pallets, net weight)