Battery Grade White Alumina Powder Ceramic Coating

Wet process membrane refers to the process in which alumina is mixed with pore forming agents (such as small molecule high boiling point solvents), heated and melted, cooled to form phase separation, and then subjected to stretching, solvent extraction, and other steps to ultimately form a microporous membrane with uniform pore size distribution and high porosity. Under wet process technology, the thickness, porosity, and pore size uniformity of the coating can be precisely controlled through process parameters, thus having higher customization capabilities.

【Application】

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.

【Specification】
1. chemical properties: Al₂O₃>99.9%
2. Color:white
3.PSD: D50=0.5-0.8um,D99<4um

【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

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.

【Packing】 25kgs/poly-drum ,500kgs/pallet.


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: Do you provide equipment operation training?
A:Yes. We can will send one or two professional technicians (one is electrical engineer, one is mechanical engineer) to install and adjust the machines and help train the workers.

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.

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).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.

SHANGHAI HUAMING GONA RARE EARTH NEW MATERIALS CO.,LTD.was founded in 2006, located in Songjiang Industrial zone, rounded by National Engineering research Center of Ultrafine Powder(NERCUP).Gona is a R&D company specialized in technology development of functional powder materials. Focused on the control technology of powder particulate, Gona provides series product such as rare earth oxide with special particulate properties, cerium oxide polishing powder, catalyst materials,Alumina Li+ battery separator.

Now we have three bases and R & D Center.One is located in Baotou the other in Jiande and Shanghai.

Gona always pay great attention to the intellectual property and independent development, and pursuing innovation of science and technology. Gona was recognized as “High-Tech Enterprise of Shanghai” in 2008. The project of the high-precision rare earth polishing powder passed high-tech achievements transformation, and its annual production reaches 2000 tons.We will adhere to the philosophy of “quality first” business, and improve the quality of our product and service actively.

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