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Homogeneous catalysis of dioxygen reduction by molecular Mn complexes. | LitMetric

Homogeneous catalysis of dioxygen reduction by molecular Mn complexes.

Chem Commun (Camb)

Department of Chemistry, University of Virginia, PO Box 400319, Charlottesville, VA 22904-4319, USA.

Published: October 2022

AI Article Synopsis

  • The growing global energy demand highlights the need for sustainable alternative energy sources and eco-friendly industrial processes, particularly in hydrogen fuel cells.
  • The oxygen reduction reaction (ORR) plays a critical role in both hydrogen fuel cells and the electrochemical production of hydrogen peroxide, offering a greener option than traditional industrial methods.
  • While platinum is the leading electrocatalyst for ORR, earth-abundant transition metal catalysts, especially those based on manganese, show potential, but there is currently a lack of development in Mn-centered catalysts compared to those made from iron and cobalt.

Article Abstract

Continually increasing global energy demand perpetuates the need for effective alternative energy sources and 'green' industrial processes. The oxygen reduction reaction (ORR) is crucial to the development of hydrogen fuel cells, a key device in the development of alternative energy sources. Further, the ORR to hydrogen peroxide by electrochemical means can provide an environmentally friendly alternative to its industrial production, which is capital and energy intensive. While Pt has traditionally been the best electrocatalyst for the ORR, inspiration from active sites in nature that bind and transport O has led to the development of earth-abundant transition metal catalysts. However, despite the prevalence of Mn-based active sites that bind and activate O in biological systems, there remains a lack of developed Mn-centered catalysts for ORR in comparison to Fe and Co. Here, we summarize known Mn-based molecular electrocatalysts for the ORR and describe their activity as well as future directions of the field.

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Source
http://dx.doi.org/10.1039/d2cc04628hDOI Listing

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