Polyethylene Oxide (PEO, CAS 25322-68-3) is linear nonionic water-soluble polyether polymer, widely used as matrix material for solid polymer electrolyte of lithium metal batteries. Ether oxygen segments on PEO molecular chains can coordinate with lithium cations to achieve lithium ion conduction. It possesses excellent film-forming capacity, forms flexible continuous electrolyte membrane after blending with lithium salt. The material builds stable interface against lithium metal, alleviates den

Product Detail

Product Overview

Polyethylene Oxide CAS 25322-68-3 is high-purity specialty polymer developed for solid polymer electrolyte of lithium metal all-solid-state batteries. Liquid electrolyte brings leakage and safety hazards for lithium metal batteries. This high-purity PEO acts as polymer matrix for solvent-free solid electrolyte. It supports uniform lithium ion migration, maintains flexible mechanical strength, stabilizes electrode-electrolyte interface, and helps researchers develop high-safety, high-energy-density solid state lithium metal batteries.

Key Features

CAS Number: 25322-68-3, Appearance: White free-flowing fine powder
Unique lithium salt solvation capability to construct Li⁺ transmission pathways
Excellent film-forming property, easy to prepare thin and flexible solid electrolyte membrane
Good electrochemical compatibility with lithium metal anode
Flexible mechanical property, beneficial for inhibiting lithium dendrite propagation
Strictly controlled low moisture and low impurity level for battery grade requirement
Multiple molecular weight grades to adjust ionic conductivity and mechanical performance
Compatible with lithium salts, ceramic fillers for composite solid electrolyte formulation

Main Applications

Polymer matrix raw material for solid polymer electrolyte (SPE) of lithium metal batteries
Base material for composite polymer electrolyte (CPE) in all-solid-state battery research
Research raw material for solid-state lithium battery lab formula development
Functional polymer for flexible solid lithium battery electrolyte membrane preparation

Usage Guidance

Dry PEO thoroughly under vacuum oven before formulation to remove residual moisture. Mix uniformly with lithium salt and inorganic fillers via solution casting or hot pressing process. Avoid overhigh processing temperature which causes thermal oxidation degradation. Carry out electrochemical characterization including ionic conductivity, stability window and cycling performance to optimize formula. All material handling should be operated under anhydrous and oxygen-free glove box environment.

Storage & Package

Keep package hermetically sealed. Store in dry, low-humidity warehouse. Strictly prevent moisture absorption, heat and direct sunlight. Standard package: 25kg aluminum foil lined kraft bag. Shelf life: 12 months under proper sealed storage.

Note: Battery-grade PEO requires strict moisture barrier storage.

Service Support

Ultra-high purity battery-grade trial samples available. COA, TDS can be provided. Stable bulk supply. Welcome to inquire factory quotation.

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Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.