FUSING SPACESUITS WITH ELECCTROLYZERS
Spacesuits are integrated with Electrolyzer Tech.
This allows them to automatically siphon Carbon Dioxide from the atmosphere.
The Oxygen is split from the Carbon and is stored in Gas Tanks similar to those of Divers.
An alternate option is to do away with the Gas Tanks altogether and store the oxygen within the Suit itself.
This can be achieved by designing the suit with an inflatable Vacuum Layer.
The Carbon is either excreted from the Suit or converted to an alternate form for future use.