Triphenyl Phosphate(TPP),Battery Grade 500g

Triphenyl Phosphate (TPP), Battery Grade 500g

Chemical Name: Triphenyl Phosphate
CAS Number: 115-86-6
Product Code: EL115-86-6
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Triphenyl phosphate (TPP) is a solid-phase flame-retardant additive distinguished from alkyl phosphates by its three aromatic phenyl groups, which confer stronger radical-quenching activity per unit mass and greater thermal stability. TPP is a solid at room temperature (mp ~49°C), making it easily weighed as a mass fraction additive. Beyond its flame-retardant role, TPP has been shown to form a protective film on high-voltage cathode surfaces, reducing transition metal dissolution and interfacial impedance growth in layered oxide cathodes such as NCM811 and LiCoO₂. Xnergy supplies battery-grade TPP for electrolyte safety and cathode protection research.

Key Features

• Stronger radical quenching than alkyl phosphates — aromatic phenyl groups provide greater flame-suppression potency per unit concentration
• Cathode protective film formation — deposits a thin phosphate layer on NCM and LCO cathode surfaces, reducing metal dissolution at high voltage
• Solid form (mp ~49°C) — precise dosing by weight; dissolves in carbonate electrolytes above melting point
• High thermal stability — resistant to decomposition at elevated temperatures encountered in thermal abuse scenarios
• Purity ≥99% / H₂O ≤10 ppm — battery-grade quality for controlled electrolyte additive studies
• Flexible volumes — available from 1 kg for research to production scale

Specification

Application Areas

• High-voltage electrolyte flame-retardant additive for NCM811 and LNMO cathodes
• Cathode electrolyte interphase (CEI) film formation to suppress Mn, Co, Ni dissolution
• Comparative flame-retardant study: solid TPP vs. liquid TEP efficacy
• Thermal runaway mitigation for high-energy-density prismatic and pouch cells
• Electrolyte safety certification testing requiring reduced flash point and SET
• High-voltage (4.4–4.6 V) electrolyte formulation with combined flame-retardant and cathode protection functions

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