Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science

Abstract

The present work provides a critical review of the science and technological state-of-the-art of defect engineering applied to oxide perovskites in thermocatalytic, electrocatalytic, photocatalytic, and energy-storage applications.

Photocatalysis and perovskite oxide-based materials: a remedy for a clean and sustainable future

“…Furthermore, it is thermodynamically unfavorable to introduce the vacancy at the B site due to the high charge value and the small B site cation size. 146,147 …”

Recent advances of metal telluride anodes for high-performance lithium/sodium–ion batteries

“…49,50 Point defects forming at the surface of the anode materials are the most critical one. 51–53 Point defects such as vacancy will disturb the surrounding atoms to some extent and cause lattice distortion of crystal materials, which can improve their conductivity and the diffusion coefficient by effectively regulating the electronic structure. 53–56 Wang et al 57 synthesized hierarchical SnS 2 microspheres with S vacancy through a one-step solvothermal process.…”

Impact of Surface Defects on LaNiO3 Perovskite Electrocatalysts for the Oxygen Evolution Reaction

“…Thermal reduction in a reducing atmosphere (typically H 2 , NH 3 or CO), is a common strategy to generate structural defects in perovskites. [21] A layered double perovskite PrBaMn 2 O 6-δ fabricated by hydrogen treatment at 800 °C, evidenced a high concentration of oxygen vacancies and associated high gravimetric and volumetric capacitance. [22] Previous structural and electrochemical analyses indicate that oxygen vacancies promote OER performance of perovskite oxides, [23] in part due to changes in their electronic structure.…”