Lithium-sulphur dioxide primary cells

Table 56.3 Specification of Mallory lithium-sulphur dioxide primary cells...

Other suppliers of lithium-sulphur dioxide primary cells include Eagle Richer (US) Power Conversion Inc. (US) (0.5-35 Ah capacity) SAFT... 

Lithium-sulphur dioxide cells are available in a variety of cylindrical cell sizes from companies such as Honeywell and Duracell International, capacities available ranging from 0.45 to 21 Ah. Larger cells are under development. A number of the cells are manufactured in standard ANSI (American National Standards Institute) cell sizes in dimensions of popular conventional zinc primary cells. While these single cells may be physically interchangeable, they are not electrically interchangeable because of the high cell voltage of the lithium cell. 

Honeywell have described their work on the development of an alternative electrolyte for a multi-cell lithium-sulphur dioxide resen e battery. In developing a multi-cell lithium reserve battery, the lithium bromide-sulphur dioxide acetonitrile electrolyte system used in their primary batteries was found to be unstable when stored by itself at high temperature - a functional capability required for all resen e applications. In addition to consumption of the oxidant sulphur dioxide in reactions causing instability, some of the products of electrolyte degradation arc solid, which would cause nrajor problems in activation. Primary active cells after storage do not undergo such degradation reactions. 

Figure 56.3 Mallory primary lithium-sulphur dioxide cells typical performance on constant-resistance load. End-point voltage 2.0 V (Courtesy of Mallory)...

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