Inhibition of Surface Chemical Moieties by Tris(hydroxymethyl)aminomethane: A Key to Understanding Oxygen Reduction on Iron-Nitrogen-Carbon Catalysts

Y. Chen; K. Artyushkova; S. Rojas-Carbonell; A. Serov; I. Matanovic; C. Santoro; T. Asset; P. Atanassov

doi:10.1021/acsaem.8b00020

Inhibition of Surface Chemical Moieties by Tris(hydroxymethyl)aminomethane: A Key to Understanding Oxygen Reduction on Iron-Nitrogen-Carbon Catalysts

Y. Chen, K. Artyushkova, S. Rojas-Carbonell, A. Serov, I. Matanovic, C. Santoro, T. Asset, P. Atanassov

CE - Academic & Research

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of tris(hydroxymethyl)aminomethane (Tris) on the activity of metal-nitrogen-carbon (M-N-C) platinum metal group-free (PGM-free) catalysts for oxygen reduction reaction (ORR) is studied. Electrochemical tests performed in the acidic and alkaline electrolyte and comparison between electrochemical observations for metal-free and metal-containing catalysts along with density functional calculations showed the multiplex mechanism of oxygen reduction in which numerous species perform partial and full reduction of oxygen to peroxide or water, respectively. The important role of protons in the mechanism of oxygen reduction is highlighted.

Original language	English
Pages (from-to)	1942-1949
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	1
Issue number	5
Early online date	10 Apr 2018
DOIs	https://doi.org/10.1021/acsaem.8b00020
Publication status	Published - 29 May 2018

Keywords

active site poisoning
ORR inhibition
oxygen reduction reaction
platinum group metal-free electrocatalyst
probing active sites
transition metal-nitrogen-carbon catalysts

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10.1021/acsaem.8b00020

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title = "Inhibition of Surface Chemical Moieties by Tris(hydroxymethyl)aminomethane: A Key to Understanding Oxygen Reduction on Iron-Nitrogen-Carbon Catalysts",

abstract = "The effect of tris(hydroxymethyl)aminomethane (Tris) on the activity of metal-nitrogen-carbon (M-N-C) platinum metal group-free (PGM-free) catalysts for oxygen reduction reaction (ORR) is studied. Electrochemical tests performed in the acidic and alkaline electrolyte and comparison between electrochemical observations for metal-free and metal-containing catalysts along with density functional calculations showed the multiplex mechanism of oxygen reduction in which numerous species perform partial and full reduction of oxygen to peroxide or water, respectively. The important role of protons in the mechanism of oxygen reduction is highlighted.",

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author = "Y. Chen and K. Artyushkova and S. Rojas-Carbonell and A. Serov and I. Matanovic and C. Santoro and T. Asset and P. Atanassov",

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TY - JOUR

T1 - Inhibition of Surface Chemical Moieties by Tris(hydroxymethyl)aminomethane

T2 - A Key to Understanding Oxygen Reduction on Iron-Nitrogen-Carbon Catalysts

AU - Chen, Y.

AU - Artyushkova, K.

AU - Rojas-Carbonell, S.

AU - Serov, A.

AU - Matanovic, I.

AU - Santoro, C.

AU - Asset, T.

AU - Atanassov, P.

PY - 2018/5/29

Y1 - 2018/5/29

N2 - The effect of tris(hydroxymethyl)aminomethane (Tris) on the activity of metal-nitrogen-carbon (M-N-C) platinum metal group-free (PGM-free) catalysts for oxygen reduction reaction (ORR) is studied. Electrochemical tests performed in the acidic and alkaline electrolyte and comparison between electrochemical observations for metal-free and metal-containing catalysts along with density functional calculations showed the multiplex mechanism of oxygen reduction in which numerous species perform partial and full reduction of oxygen to peroxide or water, respectively. The important role of protons in the mechanism of oxygen reduction is highlighted.

AB - The effect of tris(hydroxymethyl)aminomethane (Tris) on the activity of metal-nitrogen-carbon (M-N-C) platinum metal group-free (PGM-free) catalysts for oxygen reduction reaction (ORR) is studied. Electrochemical tests performed in the acidic and alkaline electrolyte and comparison between electrochemical observations for metal-free and metal-containing catalysts along with density functional calculations showed the multiplex mechanism of oxygen reduction in which numerous species perform partial and full reduction of oxygen to peroxide or water, respectively. The important role of protons in the mechanism of oxygen reduction is highlighted.

KW - active site poisoning

KW - ORR inhibition

KW - oxygen reduction reaction

KW - platinum group metal-free electrocatalyst

KW - probing active sites

KW - transition metal-nitrogen-carbon catalysts

U2 - 10.1021/acsaem.8b00020

DO - 10.1021/acsaem.8b00020

M3 - Article

AN - SCOPUS:85064115557

SN - 2574-0962

VL - 1

SP - 1942

EP - 1949

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 5

ER -

Inhibition of Surface Chemical Moieties by Tris(hydroxymethyl)aminomethane: A Key to Understanding Oxygen Reduction on Iron-Nitrogen-Carbon Catalysts

Abstract

Keywords

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