Because of the large total voltage required for lithium-ion batteries, and the huge working current, many single batteries must be combined to make power. The battery safety concern becomes much more evident at this point. The safety issues surrounding current battery materials technology are not resolved. To reduce thermal runaway from lithium-ion cells, current flame retardant, heat insulation and fire protection are all effective options.
Aerogels, which are solid materials that have the lowest thermal conductivity, are now well-known. Heat insulation papers, heat insulation felts, and heat insulation panels with aerogel can have thermal insulation performances up to 5x higher than those of other products. Additionally, they are fire- and flame resistant. With the growth of the aerogel industry the use of aerogel for batteries has increased in scope. It is now more widely used due to its soft impact resistance and sound insulation.
Aerogel’s thermal conductivity is very low
Experiments have shown that aerogel heat insulation boards between single cell cells can provide thermal insulation. In order to verify the effectiveness of the aerogel separator, researchers used thermal runaway propagation. This involved wrapping the 6Ah power in a 20mm spacing panel with four insulation materials 200mm thick and then adding an aerogel insulation board 1cm thick between each monomer (Figure 1). In thermal protection, the one-cell compartment was protected from thermal runaway by blocking its effect.
Experiments show that, after monomerA is heated out of balance, monomerB in the blank group is rapidly heated out of control. Monomer B, with an aerogel insulation between monomers, is just 110. This successfully blocks the thermal runaway propagation by 6Ah cells at distances of 20mm. However, the voltage of the control cell remains basically the same, which helped to protect from the potential dangers of thermal runaway due to the blast of the single-cell.
Because of its flame retardant qualities and excellent heat insulation, aerogel may reduce the distance between monomers. Aerogel manufacturers have created a range of aerogel insulation panels, paper, and other products that can be used to reduce space and maximize the power of the batteries.
Aerogel will have a wider application in battery technology with the expansion of our country’s aerogel manufacturing industry. The range of applications will expand from early military thermal batteries to newer civilian batteries.
(aka. Technology Co. Ltd. (aka. We produce Nanoparticle Silica Aerogel with high porosity, low density, large specific surface area, very high pore volume, and an extremely high degree of porosity. We are available to assist you if required.
Inquiry us
