Electro-chemo-mechanically Driven Ni Exsolution from (Pr,Ce,Ni)O <sub>2−δ</sub> : Controlled Nucleation Density and Enhanced Electrode Kinetics
, and its nucleation density increases with increasing electrochemical driving force/decreasing oxygen chemical potential. We further evaluate the electrochemical performance under highly reducing (fuel electrode) conditions by electrochemical impedance spectroscopy. With the exsolved Ni nanoparticles, the surface exchange coefficient of the NPCO is found to be ∼4× higher than for PCO without exsolution. This work confirms mixed conducting fluorites as beneficial host lattices for facile transition-metal exsolution and suggests the possibility for constructing an all ceria-based electrochemical cell with PCO serving as both the cathode and the anode.
Authors
- Nicola H. Perry (ORCID: https://orcid.org/0000-0002-7207-2113)
- Yong-Yun Hsiau
- Iradwikanari Waluyo (ORCID: https://orcid.org/0000-0002-4046-9722)
- Adrian Hunt
- Yaguang Zhu (ORCID: https://orcid.org/0000-0002-1522-4491)
- Sipei Zhang (ORCID: https://orcid.org/0009-0008-7585-5966)
- Kelsey B. Hatzell (ORCID: https://orcid.org/0000-0002-5222-7288)
- Lin Lin (ORCID: https://orcid.org/0000-0003-0352-0389)
Institutions
- University of Illinois Urbana-Champaign (US)
- Brookhaven National Laboratory (US)
- Princeton University (US)
- Stanford Synchrotron Radiation Lightsource (US)
- National Synchrotron Light Source II
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2026-05-12
- DOI
- https://doi.org/10.1021/acsami.6c01353
- Primary Topic
- Advancements in Solid Oxide Fuel Cells
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- University of Illinois at Urbana-Champaign
- Division of Materials Research
- Basic Energy Sciences
- Brookhaven National Laboratory