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Aluminum Oxide Used for lithium battery Diaphragm

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What is ceramic diaphragm?

Ceramic coating special diaphragm: With PP, PE or multi-layer composite diaphragm as the matrix, the surface is covered with a layer of nano-sized aluminum oxide product, which is very closely bonded to the substrate after special process treatment. It can significantly boost the high temperature resistance and also safety and security of lithium-ion batteries. Ceramic covered unique diaphragm is specifically ideal for power batteries.

Needs for diaphragms for lithium-ion batteries:

The efficiency of the diaphragm establishes the inner resistance and also interface structure of the battery, and after that figures out the battery capability, safety performance, fee and discharge density and cycle performance.

Consequently, the following attributes need to be fulfilled:

Good chemical stability: resistance to natural solvents.

Excellent mechanical properties: high tensile stamina and also high leak strength.

Good thermal stability: reduced thermal shrinking and high film damaging temperature level.

Electrolyte wettability: good compatibility with electrolyte and also high liquid absorption price.

As a type of inorganic substance, light weight aluminum oxide has high thermal stability and also chemical inertia, so it is a good selection for battery diaphragm ceramic layer.

Performance demands of ceramic diaphragm for alumina:

1. The bit size is consistent, which can be well glued to the diaphragm without obstructing the diaphragm aperture.

2. Alumina has high pureness and also can not introduce impurities, which influences the interior atmosphere of the battery.

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

Advantages of coating alumina diaphragm:

High temperature resistance:

Alumina finish has outstanding high temperature resistance and can maintain the undamaged form of the diaphragm above 180 degrees Celsius.

High protection:

The alumina layer can neutralize the cost-free HF in the electrolyte as well as improve the acid resistance and safety of the battery.

High magnifying:

Nano-alumina can develop solid option in lithium battery, which can boost the magnification and cycle performance.

Great wettability:

Nanometer alumina powder has great fluid absorption and also liquid retention capability.

Distinct self-turn-off attributes:

The closed-cell feature of polyolefin diaphragm is maintained to prevent safety risks brought on by thermal runaway.

Low self-discharge rate:

The alumina layer raises the curvature of micropores and the self-discharge is lower than that of the usual diaphragm.

Lengthy cycle life: minimize the mechanical micro-short circuit in the cycle procedure and properly enhance the cycle life.

Aluminum oxide Price

The cost is affected by numerous variables including the supply and also need in the market, market trends, financial activity, market view, as well as unanticipated events.

If you are looking for the current al2o3 rate, you can send us your inquiry for a quote. (

Aluminum oxide Supplier

Innovation Co. Ltd. is a relied on al2o3 manufacturer as well as al2o3 provider with over 12-year-experience. We deliver our items throughout the world.

If you are searching for top notch al2o3 powder, please feel free to contact us as well as send out an inquiry. (

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