Atomically dispersed metal–nitrogen–carbon catalysts for fuel cells: advances in catalyst design, electrode performance, and durability improvement

2020/01/01 by Yanghua He, Shengwen Liu, Cameron Priest +2 · 5 citations
Energy · Engineering · #Advanced battery technologies research #Electrocatalysts for Energy Conversion #Fuel Cells and Related Materials

paper · pdf · doi:10.1039/c9cs00903e

openalex publication_date 2020/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

sites and their local structures are crucial for enhancing intrinsic activity. Increasing the site density relies on the innovative strategies of restricting the migration and agglomeration of single metal sites into metallic clusters. Relevant understandings provide the correlations among the nature of active sites, nanostructures, and catalytic activity of M-N-C catalysts at the atomic scale through a combination of experimentation and theory. Current knowledge of the transferring catalytic properties of M-N-C catalysts to MEA performance is limited. Rationally designing morphologic features of M-N-C catalysts play a vital role in boosting electrode performance through exposing more accessible active sites, realizing uniform ionomer distribution, and facilitating mass/proton transports. We outline future research directions concerning the comprehensive evaluation of M-N-C catalysts in MEAs. The most considerable challenge of current M-N-C catalysts is the unsatisfied stability and rapid performance degradation in MEAs. Therefore, we further discuss practical methods and strategies to mitigate catalyst and electrode degradation, which is fundamentally essential to make M-N-C catalysts viable in PEMFC technologies.

Citations

• Ternary PtIrNi Catalysts for Efficient Electrochemical Ammonia Oxidation

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