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What is the function of lithium-ion battery electrolyte?

Published Time:

2024-02-07

Lithium-ion batteries, as a portable energy storage device, are widely used in mobile phones, laptops, cameras, electric bicycles, electric vehicles, and other fields. Among them, the lithium battery electrolyte is an aspect that cannot be ignored. After all, the electrolyte, which accounts for 15% of the battery cost, does play a crucial role in battery energy density, power density, wide temperature application, cycle life, and performance.

Lithium-ion batteries, as portable energy storage devices, are widely used in mobile phones, laptops, cameras, electric bicycles, electric vehicles, and other fields. The electrolyte in lithium batteries is an aspect that cannot be ignored. After all, the electrolyte, which accounts for 15% of the battery cost, plays a crucial role in the battery's energy density, power density, wide-temperature application, cycle life, and performance.

The electrolyte is one of the four key materials of a lithium-ion battery: the positive electrode, the negative electrode, the diaphragm, and the electrolyte. It is called the "blood" of the lithium-ion battery, conducting electrons between the positive and negative electrodes of the battery. It is essential for achieving high-voltage lithium-ion batteries and ensuring advantages such as energy ratio.

As is well known, the main components of lithium-ion batteries include four aspects: positive electrode material, negative electrode material, electrolyte, and diaphragm. As an important component of lithium-ion batteries, the electrolyte plays an irreplaceable role in improving the cycle performance and energy density of lithium-ion batteries, thereby further enhancing the cruising range of electric vehicles. The energy density of a lithium-ion battery depends on the battery's voltage and capacity. In order to increase the battery's energy density, in addition to increasing the capacity of the positive and negative electrode materials, another method is to increase the operating voltage of the battery. In this way, the battery will affect the electrolyte at a high operating voltage. High-voltage performance also presents new technical requirements.

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