Lanthanum Cerium Phosphate/(La,Ce)PO4, the “ion-conducting and optical regulation expert” in the family of rare earth phosphates, has achieved multi-scene breakthroughs in new energy storage, environmental governance and functional materials with its unique crystal structure and chemical stability.
Chemical properties
- Solubility: insoluble in water, it has a certain solubility in acidic and alkaline solutions, but usually requires specific conditions.
- Thermal stability: It has a high thermal stability, can maintain relative stability of chemical composition and structure at high temperatures, and will not decompose until it reaches a higher temperature.
- Acid-Base Properties: Its aqueous solution is acidic due to the presence of phosphate ions.
- Oxidizing power: Generally, it has a stable chemical nature, but it may show a certain oxidizing power under specific conditions.
Application fields
New energy
- Solid-state lithium battery: LaCePO₄-based solid-state electrolyte enhances Li⁺ conductivity and suppresses dendrite growth;
- Fuel cells: Proton conductors for oxygen ion transport layer in medium temperature SOFC.
Biopharmaceuticals
- Drug sustained release carrier: Nanophosphorite cerium loaded with anticancer drugs (such as cisplatin), achieving pH-responsive release;
- Bone repair materials: La³⁺/Ce³⁺ promote osteoblast differentiation, PO₄³⁻ simulates the apatite structure of natural bone.
Photoelectric technology
- Phosphor matrix: Eu³⁺/Tb³⁺ doped LaCePO₄ for red/green light emission for LED backlight;
- Optical coating: High refractive index film for anti-reflection lens.
Chemical catalysis
- Alkane dehydrogenation: Pt catalysts supported on LaCePO₄ improve propylene selectivity;
- Photocatalytic degradation: Ce³⁺/Ce⁴⁺ redox cycle drives the decomposition of organic pollutants.
Metal alloys
- High-temperature alloy coating: LaCePO₄ thermal barrier coating enhances the oxygen corrosion resistance of turbine blades;
- Magnesium alloy modification: Nanoparticles refine grains and enhance mechanical properties.
Ecological environment
- Radioactive nuclide adsorption: PO₄³⁻ efficiently fixed uranium ions (UO₂²⁺) for nuclear wastewater treatment;
- Soil remediation: La³⁺ locks phosphates, inhibiting eutrophication of water bodies.
Agricultural micro-fertilizers
- Slow-release phosphate fertilizer: LaCePO₄ nanoparticles slowly release PO₄³⁻, reducing phosphorus loss;
- Stress alleviators: Ce³⁺ activates the antioxidant enzyme system of crops, enhancing drought resistance.
Ceramic glass
- Low expansion ceramics: LaCePO₄-Al₂O₃ composite ceramics for substrate of precision devices;
- Laser glass: High rare earth doped glass for achieving near infrared laser output.
