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Title: Kinetics of oxygen surface exchange on epitaxial Ruddlesden–Popper phases and correlations to first-principles descriptors

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [1];  [2];  [3];  [1];  [4]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Wisconsin-Madison, Madison, WI (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Through alignment of theoretical modeling with experimental measurements of oxygen surface-exchange kinetics on (001)-oriented La2–xSrxMO4+δ (M = Co, Ni, Cu) thin films, we demonstrate here the capability of the theoretical bulk O 2p-band centers to correlate with oxygen surface-exchange kinetics of the Ruddlesden–Popper oxide (RP214) (001)-oriented thin films. In addition, we demonstrate that the bulk O 2p-band centers can also correlate with the experimental activation energies for bulk oxygen transport and oxygen surface exchange of both the RP214 and the perovskite polycrystalline materials reported in the literature, indicating the effectiveness of the bulk O 2p-band centers in describing the associated energetics and kinetics. Here, we propose that the opposite slopes of the bulk O 2p-band center correlations between the RP214 and the perovskite materials are due to the intrinsic mechanistic differences of their oxygen surface-exchange kinetics bulk anionic transport.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1247947
Journal Information:
Journal of Physical Chemistry Letters, Vol. 7, Issue 2; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (12)

Trends in adsorption of electrocatalytic water splitting intermediates on cubic ABO 3 oxides journal January 2018
Oxygen migration and proton diffusivity in transition-metal (Mn, Fe, Co, and Cu) doped Ruddlesden–Popper oxides journal January 2019
Roles of Bulk and Surface Chemistry in the Oxygen Exchange Kinetics and Related Properties of Mixed Conducting Perovskite Oxide Electrodes journal October 2016
Controlling cation segregation in perovskite-based electrodes for high electro-catalytic activity and durability journal January 2017
Material Discovery and Design Principles for Stable, High Activity Perovskite Cathodes for Solid Oxide Fuel Cells journal January 2018
Exceptional electrocatalytic oxygen evolution via tunable charge transfer interactions in La0.5Sr1.5Ni1−xFexO4±δ Ruddlesden-Popper oxides journal August 2018
Impact of microstructure and crystallinity on surface exchange kinetics of strontium titanium iron oxide perovskite by in situ optical transmission relaxation approach journal January 2017
Understanding and Controlling the Work Function of Perovskite Oxides Using Density Functional Theory journal May 2016
A perspective on low-temperature solid oxide fuel cells journal January 2016
Controlling Oxygen Mobility in Ruddlesden–Popper Oxides journal March 2017
Controlling the Oxygen Electrocatalysis on Perovskite and Layered Oxide Thin Films for Solid Oxide Fuel Cell Cathodes journal March 2019
Understanding and controlling the work function of perovskite oxides using Density Functional Theory text January 2016