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Peer-reviewedCC BY 4.0The Journal of Physical Chemistry. C, Nanomaterials and Interfaces

Plasma-Enhancement of Oxygen Pumping: The Role of Atomic Oxygen

  • Xingyu Chen1,2
  • Aleksandr Pikalev2
  • Susanta Bera2
  • Mihalis N. Tsampas2
  • Guan-Jun Zhang1
  • M. C. M. van de Sanden2,3
  1. 1School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, 710049 Shaanxi, China
  2. 2Dutch Institute for Fundamental Energy Research (DIFFER), De Zaale 20, 5612 AJ Eindhoven, The Netherlands
  3. 3Eindhoven Institute for Renewable Energy Systems (EIRES), Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
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Abstract

Sluggish surface oxygen reduction kinetics remain a principal barrier to efficient oxygen pumping in solid oxide electrochemical cells (SOECs), where dissociative adsorption of O2 on lanthanum strontium manganite (LSM) electrodes is widely established as the rate-limiting step, particularly under reduced oxygen partial pressure and cathodic polarization conditions. While low-temperature plasmas generate reactive oxygen species, their coupling to electrochemical oxygen transport has not been quantitatively addressed. This work couples an oxygen-containing glow discharge to a symmetric LSM|YSZ|LSM SOEC to directly supply reactive oxygen species to the SOEC cathode. A 180% increase in oxygen pumping capacity is observed at 585 °C in 1 Torr He (80%)–O2 (20%) plasma at 470 W. Open-circuit voltage (OCV) measurements reveal a shift in electrochemical equilibrium consistent with increased surface oxygen activity. A surface reaction model identifies atomic oxygen as the dominant contributor to this enhancement. These findings demonstrate plasma–electrochemical coupling as a viable route to solid oxide oxygen separation at reduced operating temperatures.

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Cite

BibTeXRIS
BibTeX
@article{chen2026plasmaenhancement,
  title = {{Plasma-Enhancement of Oxygen Pumping: The Role of Atomic Oxygen}},
  author = {Xingyu Chen and Aleksandr Pikalev and Susanta Bera and Mihalis N. Tsampas and Guan-Jun Zhang and M. C. M. van de Sanden},
  journal = {The Journal of Physical Chemistry. C, Nanomaterials and Interfaces},
  year = {2026},
  month = aug,
  doi = {10.1021/acs.jpcc.6c02560},
  url = {https://doi.org/10.1021/acs.jpcc.6c02560},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Plasma-Enhancement of Oxygen Pumping: The Role of Atomic Oxygen
AU  - Xingyu Chen
AU  - Aleksandr Pikalev
AU  - Susanta Bera
AU  - Mihalis N. Tsampas
AU  - Guan-Jun Zhang
AU  - M. C. M. van de Sanden
PY  - 2026
DA  - 2026/08/24
JO  - The Journal of Physical Chemistry. C, Nanomaterials and Interfaces
DO  - 10.1021/acs.jpcc.6c02560
UR  - https://doi.org/10.1021/acs.jpcc.6c02560
AB  - Sluggish surface oxygen reduction kinetics remain a principal barrier to efficient oxygen pumping in solid oxide electrochemical cells (SOECs), where dissociative adsorption of O2 on lanthanum strontium manganite (LSM) electrodes is widely established as the rate-limiting step, particularly under reduced oxygen partial pressure and cathodic polarization conditions. While low-temperature plasmas generate reactive oxygen species, their coupling to electrochemical oxygen transport has not been quantitatively addressed. This work couples an oxygen-containing glow discharge to a symmetric LSM|YSZ|LSM SOEC to directly supply reactive oxygen species to the SOEC cathode. A 180% increase in oxygen pumping capacity is observed at 585 °C in 1 Torr He (80%)–O2 (20%) plasma at 470 W. Open-circuit voltage (OCV) measurements reveal a shift in electrochemical equilibrium consistent with increased surface oxygen activity. A surface reaction model identifies atomic oxygen as the dominant contributor to this enhancement. These findings demonstrate plasma–electrochemical coupling as a viable route to solid oxide oxygen separation at reduced operating temperatures.
SN  - 1932-7447
SN  - 1932-7455
ER  -