High capacity adsorbent for oxygen storage at cryogenic temperature

A oxygen storage adsorbent, comprising:

• a carbonized precursor material having sites that adsorb oxygen and evolve said oxygen upon adsorbing carbon dioxide and water,
• whereby said adsorbent is characterized by a total pore volume of between about 0.5 to 0.6 cm3/g, a median pore diameter between about 0.42 to 0.46 nm, and a BET surface area between about 1000 to 1200 m2/g;
• and
• whereby said carbonized precursor material has a chemical structure essentially free from oxygen atoms.

A method of making a oxygen storage adsorbent, comprising:

• polymerizing a monomer to produce a precursor material;
• carbonizing said precursor material to produce a carbonized precursor material;
• whereby said adsorbent is characterized by a oxygen adsorption capacity between about 50 to 70 wt./wt. %, as well as a carbon dioxide adsorption capacity between about 18 to 40 wt./wt. %, at a pressure of about 1 to 5 mm Hg for CO225 mm Hg for water, and a temperature of about −80 to −190° C.;
• whereby said adsorbent is further characterized by a median pore diameter between about 0.42 to 0.46 nm.