Benchmarking Perovskite Electrocatalysts’ OER Activity as Candidate Materials for Industrial Alkaline Water Electrolysis

Catalysts

Spyridon Divanis¹  Tuğçe Kutlusoy¹  DJ Donn Matienzo²  ChiaraDi Bari²  Emanuele Instuli² 

[1] Center of Excellence (CoE), Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Copenhagen, Denmark;New Application Research, Research and Development Division, Industrie De Nora S.p.A., 20134 Milan, Italy;

关键词: perovskites;    oxygen evolution reaction;    alkaline water electrolysis;    electrocatalysts;   

DOI  :  10.3390/catal10121387

来源: DOAJ

【 摘 要 】

The selection and evaluation of electrocatalysts as candidate materials for industrial alkaline water electrolysis is fundamental in the development of promising energy storage and sustainable fuels for future energy infrastructure. However, the oxygen evolution reaction (OER) activities of various electrocatalysts already reported in previous studies are not standardized. This work reports on the use of perovskite materials (LaFeO₃, LaCoO₃, LaNiO₃, PrCoO₃, Pr_0.8Sr_0.2CoO₃, and Pr_0.8Ba_0.2CoO₃) as OER electrocatalysts for alkaline water electrolysis. A facile co-precipitation technique with subsequent thermal annealing (at 700 °C in air) was performed. Industrial requirements and criteria (cost and ease of scaling up) were well-considered for the selection of the materials. The highest OER activity was observed in LaNiO₃ among the La-based perovskites, and in Pr_0.8Sr_0.2CoO₃ among the Pr-based perovskites. Moreover, the formation of double perovskites (Pr_0.8Sr_0.2CoO₃ and Pr_0.8Ba_0.2CoO₃) improved the OER activity of PrCoO₃. This work highlights that the simple characterization and electrochemical tests performed are considered the initial step in evaluating candidate catalyst materials to be used for industrial alkaline water electrolysis.

【 授权许可】

Unknown