Environmental effects of molybdenum terminal pins of lithium batteries

Studies of molybdenum corrosion upon exposure to a wide range of relative humidities (30% to 100%) were conducted to provide a sound basis for recommended storage and handling procedures. Distinctions were drawn between electrolytic corrosion driven by condensed water and gaseous oxidation where overt water condensation did not occur. The effect of corrosion on the weldability and mechanical integrity of pins was also evaluated. Storage recommendations were developed. From the experimental data collected, it is clear that uncontrolled oxidation of a molybdenum terminal pin can affect its mechanical functionality. Gaseous oxidation has been observed to be less aggressive to molybdenum components then electrolytic corrosion initiated by the condensation of moisture onto the molybdenum surface