Applications of Perovskite in Pollutant Degradation and Energy Storage

**Chapter 4**

**Abstract**

Developing Functionality in

Conversion and Storage

*Andrea Bedon and Antonella Glisenti*

chemistry, highly reproducible and up-scalable.

conversion, pollutants abatement

**1. Introduction**

**49**

Perovskites from Abatement of

Pollutants to Sustainable Energy

Different functionalities can be developed and optimised in perovskites by means of different approaches: doping, nanocomposition and exsolution. In our research, these strategies are used with the aim of a sustainable development. Our objectives are in developing perovskite-based materials for catalysis and electrocatalysis. In particular, we successfully obtained catalysts for abatement of pollutants in three-way catalysts, catalysts for dry reforming of methane and electrocatalysts for solid oxide cells (solid oxide fuel cells and solid oxide electrolysers). In all cases, the corresponding device and experimental set-up was optimised. The catalysts and electro-catalysts we considered are free of noble metals and with minimum amount of critical raw materials. The preparation procedures are by wet

**Keywords:** catalysis, electrocatalysis, nanocomposition, doping, oxygen exchange, solid oxide cells, three-way catalysts, sustainable development, energy storage and

Several materials and devices are very efficient in terms of catalytic and electrocatalytic performance because of the presence of noble metals. Due to the cost and difficulty of supply, the European Community decided that the minimization of noble metals use is a fundamental step for economic and social development. Perovskites are good candidates for substituting noble metals in devices because of their versatility and low economic and environmental impact. The perovskites we focus on are oxides of the type ABO3 (with A = alkali or alkali earth or rare earth and B = transition metal, usually) [1]. These are very stable oxides, characterised by great versatility in composition, tolerance to structural deformation and, typically,

low cost. The functionality of perovskites can be enhanced using different

approaches. In this chapter, several strategies for the enhancement of catalytic and electro-catalytic performance are described and compared. Numerous devices require materials characterised by similar properties such as the capability to dissociatively coordinate molecules, the ionic mobility and exchange capability, the thermal and morphological stability, etc. Different methodologies allow to build

## **Chapter 4**
