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Aluminum Oxide Used for lithium battery Diaphragm

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What is ceramic diaphragm?

Ceramic covering unique diaphragm: With PP, PE or multi-layer composite diaphragm as the matrix, the surface area is coated with a layer of nano-sized light weight aluminum oxide material, which is carefully adhered to the substratum after special procedure treatment. It can significantly boost the high temperature resistance and safety and security of lithium-ion batteries. Ceramic covered special diaphragm is particularly suitable for power batteries.

Demands for diaphragms for lithium-ion batteries:

The efficiency of the diaphragm identifies the inner resistance as well as interface structure of the battery, and after that figures out the battery ability, safety and security performance, cost as well as discharge density and cycle efficiency.

For that reason, the following attributes need to be satisfied:

Good chemical stability: resistance to natural solvents.

Excellent mechanical homes: high tensile stamina and high slit strength.

Excellent thermal stability: low thermal contraction and also high film damaging temperature level.

Electrolyte wettability: great compatibility with electrolyte and high liquid absorption rate.

As a type of not natural substance, light weight aluminum oxide has high thermal stability as well as chemical inertia, so it is an excellent selection for battery diaphragm ceramic covering.

Performance needs of ceramic diaphragm for alumina:

1. The particle dimension is consistent, which can be well glued to the diaphragm without blocking the diaphragm aperture.

2. Alumina has high purity as well as can not present pollutants, which affects the interior atmosphere of the battery.

3. The requirement of crystal structure of alumina ensures the compatibility and also wettability of alumina to electrolyte.

Advantages of finishing alumina diaphragm:

High temperature resistance:

Alumina finishing has superb high temperature resistance and can keep the intact form of the diaphragm over 180 degrees Celsius.

High safety and security:

The alumina covering can reduce the effects of the cost-free HF in the electrolyte as well as boost the acid resistance and safety of the battery.

High magnifying:

Nano-alumina can create solid service in lithium battery, which can improve the magnification and also cycle efficiency.

Good wettability:

Nanometer alumina powder has good fluid absorption and also liquid retention ability.

Special self-turn-off attributes:

The closed-cell characteristic of polyolefin diaphragm is maintained to stay clear of safety and security dangers triggered by thermal runaway.

Low self-discharge rate:

The alumina coating raises the curvature of micropores and the self-discharge is less than that of the typical diaphragm.

Lengthy cycle life: minimize the mechanical micro-short circuit in the cycle procedure as well as successfully boost the cycle life.

Aluminum oxide Price

The rate is influenced by several variables including the supply as well as demand in the marketplace, industry trends, financial activity, market sentiment, as well as unanticipated occasions.

If you are seeking the most recent al2o3 price, you can send us your questions for a quote. (

Aluminum oxide Supplier

Modern Technology Co. Ltd. is a trusted al2o3 producer and also al2o3 vendor with over 12-year-experience. We deliver our goods around the globe.

If you are looking for high-grade al2o3 powder, please feel free to contact us as well as send a questions. (

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