The applications of aerogel in battery field will be more diversified

Lithium-ion Batteries are the most popular in the battery industry. But they have inherent safety issues due to the structure and nature of their materials.

Due to the high total current and voltage in the power sector, thousands of batteries are often used in groups. At this point, the safety of batteries is becoming a bigger issue. The safety problem hasn’t been fully resolved as far as battery material technology goes. Heat insulation, flame retardant, and fire protection are all effective methods to reduce harm caused by lithium-ion battery thermal runaway.

Aerogels currently have the lowest known thermal conductivity among solid materials. Aerogel insulation materials, heat-insulation panels, and heat-insulation papers have a thermal insulation performance that is up to five times greater than other products. These products also offer excellent fire retardancy and flame resistance. With the growth of the aerogel sector, applications of aerogel to batteries are becoming more widespread. They offer soft impact resistance and noise reduction in addition, as well as good promotion for industrial energy savings, civil insulation etc.

Aerogel has a very low thermal conductivity


Researchers have tested the thermal insulation effect of heat insulation board made from aerogel between single cells. Thermal runaway propagation was used to test the aerogel separator. A 6Ah battery module was wrapped with four 200mm thick insulation materials, and then a board of 1cm thickness between two monomers. The thermal runaway effect on the single cell compartment.

The experimental results showed that when monomer A becomes thermally out-of-control, monomer in the blank groups without thermal protection quickly heats and becomes thermally out-of control. In contrast, experimental monomer with an aerogel between the monomers reached only 110°C. This temperature successfully blocked the spread of thermal runaway in a 6Ah cell from a distance 20mm.

Due to its excellent properties of heat insulation and flame retardance, aerogel is able to further reduce the safe distance between monomers. Aerogel companies have created a range of ultra-thin aerogel sheets, insulation paper, and other products that are designed to maximize the total power in the battery pack and reduce the space required.

Aerogel will be used more widely in battery applications as my country develops its aerogel industry. This will include the latest military thermal batteries, but also more civilian battery areas, including new energy power, thermal insulation, and flame retardant protection of lithium-ion and accumulator batteries in electronic equipment.

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