Electronic device that includes a composition that can actively generate and release a gaseous oxidizing agent component into an interior space of the electronic device, and related subassemblies and methods

An electronic device comprising:

• a) a housing having an interior gas space;
• b) one or more electronic components disposed within the housing;
• c) a composition that can actively generate a gaseous oxidizing agent component, wherein the composition comprises at least two reactants that react with each other to generate gaseous oxidizing agent component, and wherein the composition is positioned at a location within the housing;
• d) a generating device configured to actively cause the composition to generate the gaseous oxidizing agent component;
• and
• e) a barrier material that separates the composition from the interior gas space and controls the rate of diffusion of the gaseous oxidizing agent component to the interior gas space.