Review on nanoperovskites: materials, synthesis, and applications for proton and oxide ion conductivity

Abstract

Perovskite materials exhibiting proton and oxide ion conductivities have been utilized for various energyrelated applications such as solid oxide fuel cells (SOFCs), hydrogen production, gas sensors, etc. Nowadays, perovskites are being synthesized as nanoperovskites and studied for catalytic activity and energy-related applications. In this article, their synthesis in brief, the mechanism of proton and oxide ion conduction, and some specific properties and behaviors of few nanoperovskites as oxide ion and proton conductors and applications have been reported and discussed.

Gas Humidification Impact on the Properties and Performance of Perovskite‐Type Functional Materials in Proton‐Conducting Solid Oxide Cells

“…From the macroscopic viewpoint, the grain boundary resistance of the electrolytes can be reduced by increasing the grain size or decreasing the grain boundary density. There are two well‐known strategies to facilitate the grain growth such as the use of nanosized materials with enhanced sinterability or the addition of sintering additives . Both of these methods are useful for developing high‐efficient electrochemical devices.…”

First-principles molecular dynamics simulations of proton diffusion in cubic BaZrO $$_3$$ 3 perovskite under strain conditions

“…It is also well known that ionic conductivity can be higher in doped perovskites where one or more cations of the host crystal is substituted with lower valence cations [2,9]. A charge redistribution occurs after doping to balance the different oxidation states of the dopant and the substituted atom.…”

Control of Emission Color of High Quantum Yield CH3NH3PbBr3 Perovskite Quantum Dots by Precipitation Temperature

“…[ 2 ] Perovskite semiconductors on the other hand have already shown great potential in many areas. [3][4][5][6] Amongst them, organic-inorganic hybrid perovskites, such as organo-lead halide perovskites (with general structure APbX 3, where A represents a small molecule organic amine, and X is a halide) can be prepared at low cost and show useful optical properties, as well as superior electrical conductivity. [ 4,[7][8][9] Specifi cally, the iodide and bromide based CH 3 NH 3 PbX 3 have drawn extensive attention for their breakthrough performance in thin fi lm mesoporous oxide solar cells where power conversion effi ciencies of nearly 20% have already been reported.…”