Nano Aluminum Hydroxide CAS 21645-51-2 (Nano ATH) is high-purity ceramic coating powder for lithium battery separators. It features narrow particle size distribution, low ion impurity and excellent dispersion. The coating layer effectively enhances thermal stability, thermal shutdown performance and safety of separators, restraining thermal runaway of lithium batteries.

Product Detail

Nano Aluminum Hydroxide CAS 21645-51-2 Ceramic Coating Material for Lithium Battery Separator

Product Overview

Nano Aluminum Hydroxide (Nano ATH, CAS 21645-51-2) is high-purity nano ceramic coating powder specially developed for lithium battery separators. Manufactured by precision synthesis, ultrafine classification and strict impurity control technology, the product has uniform particle size and outstanding dispersibility in water-based coating slurry. When coated on polyolefin separators, it forms a compact heat-resistant protective layer, effectively improving thermal dimensional stability, preventing diaphragm melting shrinkage, inhibiting internal short circuit and reducing the risk of battery thermal runaway. It is a safe and reliable inorganic ceramic filler for power lithium-ion batteries, energy storage batteries and consumer batteries.

Core Features

Ultra-low soluble ion impurity: Strictly controlled sodium, potassium and other impurity ions, avoid battery self-discharge and capacity attenuation.
Uniform nano particle size distribution: Good dispersion in aqueous slurry, less agglomeration, easy to form thin and flat coating.
Excellent high temperature resistance: Improve thermal stability of separators, reduce thermal shrinkage under high temperature conditions.
High electrochemical stability: No side reaction inside battery system, compatible with various electrolyte formulations.
Good coating adhesion: Combine firmly with PVDF binder and separator substrate, difficult to fall off during battery cycling.
Environmentally friendly halogen-free material: No toxic substances, meet new energy battery safety and environmental standards.

Product Specifications

Product Name: Nano Aluminum Hydroxide (Nano ATH)

CAS No: 21645-51-2

Chemical Formula: Al(OH)₃

Appearance: White nano fine powder

Processing Technology: High-purity synthesis, nano crushing, precision grading, impurity purification treatment

Core Function: Ceramic coating powder, thermal stability improver, safety reinforcing filler for battery separator

Application System: Water-based ceramic coating slurry for lithium battery PE/PP separators

Application Scope

This nano ATH ceramic coating material is mainly used for surface ceramic coating modification of lithium battery separators. Widely applied in consumer lithium batteries, power vehicle lithium batteries, energy storage lithium-ion batteries, lithium iron phosphate batteries and ternary lithium batteries. It can be prepared into aqueous coating slurry and coated on single-sided or double-sided separators to produce high-safety ceramic coated separators.

Usage Guide

Disperse Nano ATH powder in deionized water with dispersant, then mix with binder and additives to prepare stable coating slurry. Control stirring speed and grinding time to prevent particle agglomeration. Adjust solid content and viscosity according to coating thickness requirements. Carry out slurry stability test and separator coating trial before mass production. Keep packaging tightly sealed and avoid moisture and dust pollution.

Packaging & Storage

Packaging: 25kg plastic-lined aluminum foil bag / plastic-lined woven bag, customized packaging available

Storage: Store in clean, dry, dust-free and ventilated warehouse; avoid mixing with other chemical raw materials. Keep sealed to prevent moisture absorption.

Shelf Life: 12 months under original sealed storage

Our Advantages

Our battery-grade Nano Aluminum Hydroxide features strict ion impurity control, narrow particle size distribution and stable batch consistency. We provide particle size specifications customized for different coating thickness requirements. Professional technical support for separator slurry formulation optimization. Factory direct supply ensures stable supply chain and fast delivery. Free samples can be offered for coating performance verification.

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