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Durability/Compatibility testing of polymers components in batteries

It is important that the plastics used in batteries, including the components separator, binder, electrolyte, and electrodes are able to withstand metal salts, harsh acids and bases that can be used as electrolytes under cycled or high temperatures, over a range of pressures. This enables optimization of the battery performance with time.

Purpose

The results are usually observed by visual observation or microscopy where surface stress fractures, etching or color changes are signs of incompatibility. Additionally, weight changes in the material after immersion studies provide information about the compatibility. If there is a loss of weight, part of the plastic is likely leaching out or degrading and disappearing into the surrounding solution. If there is a weight gain, the solution is absorbed by the polymer with a resulting material that has modified physical and mechanical properties.

Method

To test compatibility, polymer battery components are immersed in corrosive environments, including metal salt solutions and/or extreme acidic or basic solutions. Additional conditions could include:

- Cycled temperatures

- Elevated temperatures

- Pressure

This accelerated aging predicts the performance of various polymer parts in a range of battery systems over time and allows for optimization of the polymer choice for a specific battery application.

Deliveries

Results are usually delivered to the customer in the form of a report.

Application of interest

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Service

Durability and Compatibility testing of polymer components in batteries- seperators, binders, electrolytes, electrodes

Instrument

Balances

Metrology Area

Mass / Weight

Price

Price on tender

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Christian Carlsson

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Christian Carlsson

Enhetschef

+46 10 516 55 42

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