If a lithium-ion battery is exposed to moisture during production, it may lead to impaired quality, resulting in reduced product life, charging capacity and safety concerns.
Overview of Components The process in which the moisture or water vapor or the humidity is removed from the air keeping its dry bulb (DB) temperature constant is called as the dehumidification process.
A Bry-Air, Inc. desiccant dehumidifier is the most efficient and economical means of providing the very dry air required for lithium battery production. The system is specially designed to control moisture levels in lithium processing areas at -20° to -40° F dew point.
How does a chemical dehumidification device work?
Performance of a chemical dehumidification device depends on the sorbent used. The sorbent must be able to attract and remove the sorbate, such as water, from the gas stream. Sorbents absorb water on the surface of the material by adsorption or by chemically combining with water (absorption).
The more exposure, the poorer the quality, performance, and shelf life of the batteries. A Bry-Air, Inc. desiccant dehumidifier is the most efficient and economical means of providing the very dry air required for lithium battery production.
How does water vapor affect lithium batteries?
Water vapor acts as a catalyst, thus the rate at which these reactions occur depends upon both the moisture level in the atmosphere and the time that the lithium metal is exposed to that moisture. The more exposure, the poorer the quality, performance, and shelf life of the batteries.
The most important single factor governing the manufacture of lithium batteries is the fact that they must be produced in a very low humidity environment. In the early years, moisture free (inert gas) glove boxes were used to produce the batteries in small quantities.