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24 May

PASSIVATION IN LITHIUM BATTERIES

What Is Passivation in Lithium Batteries? Passivation is a chemical term referring to the inherent phenomena observed within all Lithium Thionyl Chloride Primary cells whereby a high resistant film (Solid Electrolyte Interface -SEI) of Lithium Chloride (LiCL) is formed internally on the surface of the lithium anode within cells themselves. A LiCl film is formed as a result of a chemical reaction between the interaction of the battery electrolyte and the fixed lithium anode. Long Shelf Life Due to the formation of a [...]

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23 May

Passivation of Primary Lithium Cells

Passivation is a phenomenon of all lithium primary cells related to the interaction of the metallic lithium anode and the electrolyte. A thin passivation layer forms on the surface of the anode at the instant the electrolyte is introduced into the cell. This layer is important because it protects the anode from reaction while the cell is dormant – resulting in a long shelf-life. During low rate discharge (5-10 microamps/cm2 ), the lithium ions that allow the cell to operate [...]

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