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The Central Role of Micro-Porous Film Technology in Lithium-Ion Battery Safety

With the rapid development of electric vehicles and smart wearable devices, the safety of lithium-ion batteries has become a focus of attention. In this context, micro-porous film technology plays an indispensable role in lithium-ion batteries by virtue of its unique advantages, escorting the safety of the battery. Micro-porous film is a very thin membrane material with tiny pores. These tiny pores allow specific substances (e.g., gases, solutes in liquids, or solvents) to pass through while preventing other substances from passing through, thus achieving separation, filtration, or transfer of substances.

Micro-porous films: the "gatekeepers" of lithium-ion batteries

In lithium-ion batteries, direct contact between the positive and negative electrodes can lead to serious short-circuit problems. The micro-porous film acts as an excellent "gatekeeper", allowing lithium ions to travel freely during charging and discharging with its nano-scale microporous structure, while strictly blocking the passage of electrons, effectively avoiding the risk of internal short-circuit.

Chemical stability: the "invincible body" of the micro-porous film

During the charging and discharging process of lithium-ion batteries, the micro-porous film needs to face the corrosion of electrolyte and the test of high temperature. Just like the "invincible body", the micro-porous film material must have excellent chemical stability to ensure that the original performance is still maintained in the harsh environment, providing a solid guarantee for the safety and stability of the battery.

Mechanical properties: the "iron and steel" of the micro-porous film

When the pressure inside the battery changes, the micro-porous film needs to withstand the double test of tension and compression. The microporous membrane is just like having "iron and steel bones", it must have enough mechanical strength to resist the impact of various external forces, prevent rupture or deformation, and ensure the stable operation of the battery in complex environments.

As a professional and reputable manufacturer of micro-porous films, SUNGOD has been committed to controlling the pore size and distribution of micro-porous films more finely through advanced nanotechnology, so as to improve the separation rate and selectivity, and to meet the needs of enterprises for refinement. We also provide customised services and professional advice.