Rare Earth Ce/CeO2 Electrocatalysts: Role of High Electronic Spin State of Ce and Ce3+/Ce4+ Redox Couple on Oxygen Reduction Reaction

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(8), P. 600 - 600

Published: April 14, 2025

With unique 4f electronic shells, rare earth metal-based catalysts have been attracting tremendous attention in electrocatalysis, including oxygen reduction reaction (ORR). In particular, atomically dispersed Ce/CeO2-based explored extensively due to several features. This review article provides a comprehensive understanding of (i) the significance effect Ce high-spin state on ORR activity enhancement Pt and non-pt electrocatalysts, (ii) spatially confining stabilizing ceria generation transition catalysts, (iii) experimental theoretical evidence Ce3+ ↔ Ce4+ redox pain radical scavenging, (iv) electrons d-band center electron transfer between N-doped carbon metal for enhanced activity, (v) Pt/CeO2/carbon heterojunctions stability electrocatalyst ORR. Among strategies synthesizing Ce/CeO2 metal–organic framework (MOF)-derived are being perused tendency readily coordinate with O- N-containing ligands, which upon undergoing pyrolysis, results formation high surface area, porous networks metallic/clusters/nanoparticles active sites. paper an overview recent advancements regarding derived from MOF precursor fuel cells metal–air battery applications we conclude insights into key issues future development directions.

Language: Английский

Unveiling a synthetic strategy for a cerium-based hetero-phase hybrid electrocatalyst for near-zero peroxide yield in the ORR

Sustainable Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

The urgent need to replace precious metal electrocatalysts with PGM-free alternatives without sacrificing activity and stability for fuel cell applications drives the current research.

Language: Английский