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author:

Wang, Feiteng (Wang, Feiteng.) [1] | Xie, Wenbo (Xie, Wenbo.) [2] | Yang, Lijun (Yang, Lijun.) [3] | Xie, Daiqian (Xie, Daiqian.) [4] | Lin, Sen (Lin, Sen.) [5] (Scholars:林森)

Indexed by:

EI SCIE

Abstract:

In this work, the oxygen reduction reaction (ORR) process on dual-metal-nitrogen-carbon (DM-N-C) catalysts by including two important factors (potential of zero charge and potential-dependent kinetics of O-O bond cleavage) from first-principle calculations is systematically investigated. Our results reveal that the origin for the high activity of dual-metal sites can be attributed to the fact that introducing a second metal site can facilitate the O-O bond cleavage in the key OOH* intermediate during ORR and meanwhile mitigate the *OH removal issue. Importantly, we define a descriptor called "antibonding center" that simplifies the evaluation of the kinetics. Based on the advanced approach used in this work, we demonstrate that several DM-N-C electrocatalysts including FeFeN6, FeCoN6, and CoZnN6 have high ORR activity consistent with previous experiments, and also predict MnCoN6 can be more highly stable and active for acidic ORR. This study demonstrates the advantage of the dual metal sites for the ORR in acidic electrolyte and highlights the significance of kinetics in the theoretical study of ORR electrocatalysts. (C) 2021 Elsevier Inc. All rights reserved.

Keyword:

Electrocatalysis Oxygen reduction reaction Potential-dependent kinetics Reaction mechanism Transition-metal-nitrogen-carbon catalyst

Community:

  • [ 1 ] [Wang, Feiteng]Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210023, Peoples R China
  • [ 2 ] [Yang, Lijun]Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210023, Peoples R China
  • [ 3 ] [Xie, Daiqian]Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210023, Peoples R China
  • [ 4 ] [Lin, Sen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
  • [ 5 ] [Xie, Wenbo]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland

Reprint 's Address:

  • 林森

    [Lin, Sen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

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Source :

JOURNAL OF CATALYSIS

ISSN: 0021-9517

Year: 2021

Volume: 396

Page: 215-223

8 . 0 4 7

JCR@2021

6 . 5 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:117

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 43

SCOPUS Cited Count: 47

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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