English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  CuII/CuI decorated N-doped carbonaceous electrocatalysts for the oxygen reduction reaction

Kossmann, J., Ortíz Sánchez-Manjavacas, M. L., Zschiesche, H., Tarakina, N. V., Antonietti, M., Albero, J., et al. (2021). CuII/CuI decorated N-doped carbonaceous electrocatalysts for the oxygen reduction reaction. Journal of Materials Chemistry A. doi:10.1039/D1TA09459A.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Kossmann, Janina1, Author              
Ortíz Sánchez-Manjavacas, María Luz1, Author
Zschiesche, Hannes2, Author              
Tarakina, Nadezda V.2, Author              
Antonietti, Markus3, Author              
Albero, Josep1, Author
Lopez Salas, Nieves1, Author              
Affiliations:
1Nieves Lopez Salas, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3029702              
2Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2522693              
3Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

Content

show
hide
Free keywords: -
 Abstract: The oxygen reduction reaction (ORR) that for instance takes place at the cathode of fuel cells is one of the most examined model reactions of energy conversion. The ORR presents sluggish reaction kinetics, thus limiting the overall efficiency of these cells. Pt-based catalysts are still the widest choice though they exhibit important drawbacks such as long-term instability and intolerance to methanol crossover. In this context, engineering transition metals in the form of nano- and subnano-sites on carbonaceous supports has the potential of becoming an alternative to scarce noble metal-based catalysts. Herein, we describe a simple synthetic route towards CuII/CuI decorated N-doped carbonaceous ORR electrocatalysts. CuII/CuI nanosites are obtained by calcination in air of an ionic liquid derived noble carbonaceous support impregnated with copper(ii) acetate. The strong interaction between the copper and the noble support foster the co-formation of CuII/CuI nanosites. Larger amounts of copper(ii) acetate translate into larger amounts of CuI and lower Tafel slopes. The material with 4 wt% of copper catalyzes the selective reduction of oxygen through a 4-electron transfer pathway and exhibits a lower Tafel slope than commercial platinum, a minimal overpotential, and a higher limiting current density. Moreover, all materials show promising durability and high methanol stability, which makes them promising to replace noble metals for the ORR.

Details

show
hide
Language(s): eng - English
 Dates: 2021-11-09
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1039/D1TA09459A
BibTex Citekey: D1TA09459A
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Materials Chemistry A
  Abbreviation : J. Mater. Chem. A
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 2050-7488