Tantalum Aluminum Co Doped Lithium Lanthanum Zirconate Powder Solid State Electrolyte 0.2Al Li6.75La3Zr1.75Ta0.25O12 for Advanced Batteries

Product Overview

This high-purity tantalum and aluminum co-doped lithium lanthanum zirconate (0.2Al-Li6.75La3Zr1.75Ta0.25O12) solid-state electrolyte powder represents a pinnacle material for next-generation energy storage research. Engineered specifically for all-solid-state lithium battery architectures, this advanced ceramic oxide powder addresses the critical trade-offs between ionic conductivity, phase stability, and electrochemical compatibility with lithium metal anodes. By incorporating optimal ratios of aluminum and tantalum dopants into the LLZO lattice structure, the powder suppresses the formation of low-conductivity tetragonal phases while creating favorable lithium-vacancy concentrations essential for ultra-fast ion transport.

Designed for academic institutions, industrial research centers, and solid-state cell manufacturers, this material serves as an essential precursor for fabricating dense electrolyte pellets, ceramic separator membranes, composite solid electrolytes, and interfacial protective coatings. The material undergoes strict quality control during synthesis to ensure consistent stoichiometry, uniform particle size, and high phase purity, enabling seamless integration into tape-casting, pressing, and high-temperature sintering workflows.

With an exceptional room-temperature bulk ionic conductivity of 2 × 10⁻³ S/cm and proven phase purity matching the cubic garnet crystallographic structure (ICSD #422259), this product delivers dependable performance under rigorous testing environments. Its superior chemical stability against metallic lithium minimizes interfacial side reactions and dendritic penetration, making it a critical component for high-voltage and high-energy-density solid-state battery development.

Key Features

• Optimized Synergistic Co-Doping: Dual substitution with aluminum (Al³⁺) on the lithium site and tantalum (Ta⁵⁺) on the zirconium site stabilizes the high-conductivity cubic garnet phase at ambient temperatures while controlling grain growth during sintering.
• Superior Room-Temperature Ionic Conductivity: Achieves an exceptional ionic conductivity of 2 × 10⁻³ S/cm, significantly lowering internal cell resistance and promoting rapid lithium-ion diffusion within solid-state architectures.
• Ultra-High Chemical Purity (3N Grade): Synthesized to a guaranteed total material purity of ≥ 99.9 wt%, restricting detrimental metallic impurities like iron, silicon, and niobium to ppm levels to avoid parasitical electronic conductivity.
• Precise Stoichiometric Ratio: Formulated to an exact molar composition of Al:Li:La:Zr:Ta:O = 0.2:6.75:3:1.75:0.25:12, ensuring exceptional batch-to-batch repeatability and predictable densification behavior during heat treatment.
• Verified Cubic Garnet Crystallography: Confirmed via X-ray Diffraction (XRD) indexing against reference standard ICSD #422259, ensuring complete absence of undesirable secondary phases or unreacted oxide precursor residues.
• Engineered Fine Particle Size: Milled to a controlled 325 mesh particle distribution, facilitating uniform slurry dispersion, high green body density, and low-temperature sintering kinetics.
• Excellent Lithium Metal Compatibility: Offers high thermodynamic and kinetic stability against metallic lithium anodes, suppressing dendrite nucleation and expanding the operating voltage window for high-voltage cathode materials.

Applications

Technical Specifications

General Material Parameters

Maximum Impurity Profile (ppm)

Why Choose This Product

• Rigorous Phase & Purity QC: Every batch of material undergoes stringent X-ray Diffraction (XRD) phase verification to guarantee 100% cubic garnet structure without secondary impurity phases.
• Optimized Sintering Performance: The balanced Ta/Al co-doping profile promotes enhanced grain boundary density at lower sintering temperatures, saving energy and preserving lithium stoichiometry during thermal processing.
• Strict Metallic Impurity Control: Ultra-low trace concentrations of Fe, Si, and alkali metals ensure high electronic insulation, preventing micro-short circuits and self-discharge within assembled cells.
• Batch-to-Batch Repeatability: Standardized chemical synthesis procedures guarantee consistent particle size distribution, loose bulk density, and electrochemical behavior across all production lots.
• Comprehensive Technical Support: Backed by extensive material characterization data and technical assistance tailored to solid-state cell manufacturing and laboratory pellet processing.

For bulk procurement options, custom particle size milling, or tailored chemical compositions, please contact our technical sales team to request a quote or discuss your technical requirements.

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