Shelf life lithium sulphur dioxide

Lithium-sulphur dioxide batteries have an excellent shelf life even at 71°C. Energy loss (Wh/kg) is less than 10% during 2 years storage at 71°C. 

On standing unloaded, lithium-sulphur dioxide cells develop a passive inhibiting film of thionite on the anode, formed by the initial reaction of lithium and sulphur dioxide, which prevents any further reactions or loss of capacity during storage. By virtue of this trait, shelf life is excellent over a wide range of temperature. Short-term accelerated tests indicate retention of 50% of capacity after 10 years. The passive film is quickly removed when a load is applied to the cell. 

SAFT supply this type of battery. The particular advantages claim for lithium-copper oxide batteries are long operating life, long shelf life (up to 10 years projected) and high operating temperature (tested between — 20 and - -50°C). Volumetric capacity (Ah/dm ) is 750 compared with 300 for alkaline manganese dioxide, 400 for mercury-zinc and 500 for lithium—sulphur... 

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