Publications by authors named "Kaarel Kisand"
Platinum group metal (PGM)-free electrocatalysts have emerged as promising alternatives to replace Pt for the oxygen reduction reaction (ORR) in anion exchange membrane fuel cells (AEMFCs). However, traditional synthesis methods limit the single-atom site density due to metal agglomeration at higher temperatures. This work explores the preparation of hierarchically porous atomically dispersed electrocatalysts for the ORR.
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- Highly active electrocatalysts for the oxygen reduction reaction (ORR) were created using a pyrolysis process involving 5-methylresorcinol, cobalt, iron salts, and dicyandiamide.
- The bimetallic catalyst featuring iron and cobalt (FeCoNC-at) exhibited strong stability and ORR performance similar to commercial platinum-based catalysts.
- Performance tests in an anion exchange membrane fuel cell (AEMFC) demonstrated a peak power density of 415 mW cm, showcasing the catalyst's effectiveness.