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oai:figshare.com:article/34070372 2026-10-05T14:20:19Z category_1 category_146 category_8 category_12 category_272 category_39 category_61 category_133 category_135 portal_63 item_type_2 month_year_10_2026

Confinement–Induced N₂–Phobicity Enables O₂ Extraction from Air for Catalysis Jian Wang (5901) Zhuoyang Xie (20648456) Li Li (14993) Wei Ding (690) Zidong Wei (1554397) Biophysics Space Science Microbiology Cell Biology Environmental Sciences not elsewhere classified Ecology Developmental Biology Plant Biology Computational Biology lowest durability decline highest mass activity electrostatic repulsion force unusual confined nanospace selectively transporting oxygen 2 </ sub confined space power density often used isolate oxygen commonly used approximately 78 8 v Air is commonly used as an oxidizer in proton–exchange membrane fuel cells. However, only 20.9% of air is oxygen and approximately 78% is nitrogen gas, which is inert and is often used to isolate oxygen. We report that N₂–phobicity together with confinement–catalysis exponentially increases the power density of H₂–air fuel cells by selectively transporting oxygen from the air into a confined space. N₂–phobicity originates from a combination of low nitrogen diffusion within ordered 1D pores and the unusual confined nanospace with electron–rich Pt–N states that enhance the electrostatic repulsion force to nitrogen. The resulting fuel cell exhibited the highest mass activity, the lowest durability decline, and a record high current density of 707 mA cm^–2 at 0.8 V. 2026-10-05T00:00:00Z Dataset Media 10.1021/jacs.6c15418.s002 https://figshare.com/articles/media/Confinement_Induced_N_sub_2_sub_Phobicity_Enables_O_sub_2_sub_Extraction_from_Air_for_Catalysis/34070372 CC BY-NC 4.0