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GONA High precision Alumina

GONA High precision Alumina

GONA High precision Alumina

0.8um High precision Alumina

0.5um High precision Alumina

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Alumina For Lithium Ion Battery Separator
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Product Description

GONA High precision Alumina

  Lithium ion batteries with an inorganic separator offer improved safety and enhanced reliability. an aluminium oxide Al2O3 or also called alumina layer in lithium ion-batteries is typically deposited on top of the separator membrane to enhance its thermal properties, enabling it to preserve its mechanical integrity at temperatures up to 200 • C The performance of lithium-ion batteries with coated alumina separator foils is the same at room temperature as that of those with a polymer separator.

  The coated α-Al2O3 separator does not react with LTO even after many charge/discharge cycles. Fabrication of the electrode-supported α-Al2O3 separator is scalable and cost-effective, offering high potential for practical application in industrial lithium ion battery manufacturing.


It is mainly used for the coating material of positive and negative pole diaphragm of lithium battery, which is beneficial to the stability of the battery.

It is suitable for Lithium ion battery separator,and the battery can be used for electronic car, electronic intelligent products and energy storage products.
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1. Chemical properties: Al2O3>99.9%
2. Color:white
3.PSD: D50=0.5-0.8um,D99<4um


Al2O3% 99.9 D50 0.5-0.8um
Ca% <0.05 D90 <2um
Fe% <0.01 D99 <4um
Na% <0.4 BET 5-8m2/g

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Product features


  The presence of the alumina can significantly improve the physical and chemical properties of battery separators. The alumina coating layer may reduce or prevent dendrite puncture, lithium plating and separator shrinkage during over-heating, hence significantly increasing safety performance for a lithium ion battery


Factory supply 1 micron Lithium ion battery separator alumina powder 2

  The alumina ceramic coating provides a skeleton for the flexible seperator, improves the wear resistance of the seperator, prevents lithium dendrite from piercing, reduces heat shrinkage, improves temperature resistance, and the pores are stable with temperature, which can effectively improve the safety performance of the battery.

1. Less magnetic foreign matters, stable electrical performance, low content of harmful ions;
2. High heat resistance, stable at high temperature;
3. The particle size distribution is very narrow, which can be coated with a very thin thermal insulation coating, with low thermal resistance; no small particles blocking Li + ion channel, no coarse particles scratching the film.
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【Packing】 25kgs/poly-drum ,500kgs/pallet.
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1 Q: How about the packing?
A:Usually we provide the packing as 50 kg Iron Drum or 25 plastic Drum ,if you have special requirements on them, we will according to you.


2. Q:How about the validity of the products?
A:According to the products you ordered.


3 Q: What are your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shipment.

If you have other questions, please feel free to contact us.


4.Q:What documents you provide?
A:Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA , and Origin certificate. If your markets have any special requirements, let us know.

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  Shanghai Gona Industrial Co.Ltd is founded in 2006, and located in Songjiang Industrial District, rounded by National Engineering research Center of Ultrafine Powder(NERCUP).Our company is a R&D company specialized in technology development of functional powder materials. 
  Now we have three production bases and one R & D Center.One is located in Baotou city inner Mongolia which produces cerium oxide polishing powder;One is located in Zhejiang which produces alumina for Li+ battery separator.Another one and the R&D center are located in Shanghai.

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