PMID- 38308595
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240215
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 16
IP  - 6
DP  - 2024 Feb 14
TI  - Mesoporous RE(0.5)Ce(0.5)O(2-x) Fluorite Electrocatalysts for the Oxygen 
      Evolution Reaction.
PG  - 7014-7025
LID - 10.1021/acsami.3c14977 [doi]
AB  - Developing highly active and stable electrocatalysts for the oxygen evolution 
      reaction (OER) is key to improving the efficiency and practical application of 
      various sustainable energy technologies including water electrolysis, CO(2) 
      reduction, and metal air batteries. Here, we use evaporation-induced 
      self-assembly (EISA) to synthesize highly porous fluorite nanocatalysts with a 
      high surface area. In this study, we demonstrate that a 50% rare-earth cation 
      substitution for Ce in the CeO(2) fluorite lattice improves the OER activity and 
      stability by introducing oxygen vacancies into the host lattice, which results in 
      a decrease in the adsorption energy of the OH* intermediate in the OER. Among the 
      binary fluorite compositions investigated, Nd(2)Ce(2)O(7) is shown to display the 
      lowest OER overpotential of 243 mV, achieved at a current density of 10 mA 
      cm(-2), and excellent cycling stability in an alkaline medium. Importantly, we 
      demonstrate that rare-earth oxide OER electrocatalysts with high activity and 
      stability can be achieved using the EISA synthesis route without the 
      incorporation of transition and noble metals.
FAU - Paladugu, Sreya
AU  - Paladugu S
AD  - Department of Materials Science and Engineering, University of Tennessee, 
      Knoxville, Tennessee 37996, United States.
FAU - Abdullahi, Ibrahim Munkaila
AU  - Abdullahi IM
AD  - Department of Chemistry, Missouri University of Science and Technology, Rolla, 
      Missouri 65409, United States.
FAU - Singh, Harish
AU  - Singh H
AD  - Department of Chemistry, Missouri University of Science and Technology, Rolla, 
      Missouri 65409, United States.
FAU - Spinuzzi, Sam
AU  - Spinuzzi S
AD  - Department of Chemistry, Missouri University of Science and Technology, Rolla, 
      Missouri 65409, United States.
FAU - Nath, Manashi
AU  - Nath M
AUID- ORCID: 0000-0002-5058-5313
AD  - Department of Chemistry, Missouri University of Science and Technology, Rolla, 
      Missouri 65409, United States.
FAU - Page, Katharine
AU  - Page K
AUID- ORCID: 0000-0002-9071-3383
AD  - Department of Materials Science and Engineering, University of Tennessee, 
      Knoxville, Tennessee 37996, United States.
AD  - Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 
      37831, United States.
LA  - eng
PT  - Journal Article
DEP - 20240203
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
OTO - NOTNLM
OT  - OER
OT  - electrocatalyst
OT  - fluorites
OT  - mesoporous
OT  - oxygen vacancies, high entropy oxides
OT  - rare earth cations
EDAT- 2024/02/03 21:41
MHDA- 2024/02/03 21:42
CRDT- 2024/02/03 09:06
PHST- 2024/02/03 21:42 [medline]
PHST- 2024/02/03 21:41 [pubmed]
PHST- 2024/02/03 09:06 [entrez]
AID - 10.1021/acsami.3c14977 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2024 Feb 14;16(6):7014-7025. doi: 
      10.1021/acsami.3c14977. Epub 2024 Feb 3.