This report describes our efforts of a one-year, exploratory study on the physics necessary to advance the development of a low power, small scale, air separation unit (ASU) based on non-equilibrium plasma discharges (PD-ASU). Our research focus is aimed at i) preliminarily design and selection of the test geometry of the air passage, plasma electrodes and discharge type, ii) constructing a pro...

Potentiometric oxygen sensors with excellent sensitivity in a low concentration range are designed based on intrinsic logarithmic response characteristics, and an asymmetric electrode structure, differentiated from conventional reference gases or parts exposed to air, is implemented. Electrolytes materials that formulate sensor devices evaluated by comprehensively considering their reactivity t...

Amorphous Cu–Sn–I is a promising p-type transparent semiconductor. Therefore, herein, composition and structure of sputtered thin films with varying thickness Sn content are investigated by different electron microscopy techniques, energy-dispersive X-ray spectroscopy, absorption spectroscopy at the Cu, Sn, I K-edge. After exposure to air, found contain significant amounts oxygen, leading compl...

Segregation and phase separation of aliovalent dopants on perovskite oxide (ABO3) surfaces are detrimental to the performance of energy conversion systems such as solid oxide fuel/electrolysis cells and catalysts for thermochemical H2O and CO2 splitting. One key reason behind the instability of perovskite oxide surfaces is the electrostatic attraction of the negatively charged A-site dopants (f...

In the 1980s and 1990s, the development of oxygen ion conductors for solid electrolytes, as well as mixed oxygen–electron conductors as electrodes for solid oxide fuel cells, brought scientists to envision a possibility of mixed-conducting oxygenpermeable ceramic membranes. Today this field is well established, and ceramic membranes are close to implementation in processes for oxygen extraction...