Synergistic modulation of nanostructure and active sites: Ternary Ru&Fe-WOx electrocatalyst for boosting concurrent generations of hydrogen and formate over 500 mA cm-2

Qifeng Yang; Cunjin Zhang; Bo Dong; Yuchen Cui; Feng Wang; Jiahao Cai; Peng Jin; Lai Feng

doi:10.1016/j.apcatb.2021.120359

Synergistic modulation of nanostructure and active sites: Ternary Ru&Fe-WO_x electrocatalyst for boosting concurrent generations of hydrogen and formate over 500 mA cm^-2

Qifeng Yang
, Cunjin Zhang
, Bo Dong
, Yuchen Cui
, Feng Wang
, Jiahao Cai
, Peng Jin^*
, Lai Feng

^*Corresponding author for this work

Soochow University
Hebei University of Technology

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

56 Citations (Scopus)

Abstract

Coupling methanol-to-formate oxidation (MFO) with hydrogen evolution reaction (HER) may promote hydrogen economics by introducing value-added anodic product. Herein, we develop a ternary catalyst Ru&Fe-WO_x for boosting both HER and MFO in alkaline media. An electrode pair based on Ru&Fe-WO_x delivers 10/100/500 mA/cm² current density at a low cell-potential of 1.38/1.50/1.62 V with excellent durability and nearly 100 % Faradaic efficiency (FE), outperforming the benchmark pair of Pt/C||RuO₂. By using integrated experimental and theoretical approaches, we verify synergy between WO_x host and Ru&Fe-based dopants, which results in optimized H* adsorption on lattice oxygen (HER) as well as enhanced HCOO* desorption on ruthenium site (MFO). In addition, the unique nanostructure of Ru&Fe-WO_x may further benefit to the mass transfer and catalyst robustness at large current density. This work thus demonstrates an integrated catalyst design, which is highly efficient for boosting concurrent, cost-effective and scalable production of hydrogen and formate.

Original language	English
Article number	120359
Journal	Applied Catalysis B: Environmental
Volume	296
DOIs	https://doi.org/10.1016/j.apcatb.2021.120359
Publication status	Published - 5 Nov 2021
Externally published	Yes

Keywords

Hierarchical nanostructure
Hydrogen evolution reaction
Methanol-to-formate oxidation
Synergistic modulation
d-band center

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10.1016/j.apcatb.2021.120359

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@article{9fb9bac004a543d9aff0805cbc5585d4,

title = "Synergistic modulation of nanostructure and active sites: Ternary Ru\&Fe-WOx electrocatalyst for boosting concurrent generations of hydrogen and formate over 500 mA cm-2",

abstract = "Coupling methanol-to-formate oxidation (MFO) with hydrogen evolution reaction (HER) may promote hydrogen economics by introducing value-added anodic product. Herein, we develop a ternary catalyst Ru\&Fe-WOx for boosting both HER and MFO in alkaline media. An electrode pair based on Ru\&Fe-WOx delivers 10/100/500 mA/cm2 current density at a low cell-potential of 1.38/1.50/1.62 V with excellent durability and nearly 100 \% Faradaic efficiency (FE), outperforming the benchmark pair of Pt/C||RuO2. By using integrated experimental and theoretical approaches, we verify synergy between WOx host and Ru\&Fe-based dopants, which results in optimized H* adsorption on lattice oxygen (HER) as well as enhanced HCOO* desorption on ruthenium site (MFO). In addition, the unique nanostructure of Ru\&Fe-WOx may further benefit to the mass transfer and catalyst robustness at large current density. This work thus demonstrates an integrated catalyst design, which is highly efficient for boosting concurrent, cost-effective and scalable production of hydrogen and formate.",

keywords = "Hierarchical nanostructure, Hydrogen evolution reaction, Methanol-to-formate oxidation, Synergistic modulation, d-band center",

author = "Qifeng Yang and Cunjin Zhang and Bo Dong and Yuchen Cui and Feng Wang and Jiahao Cai and Peng Jin and Lai Feng",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = nov,

day = "5",

doi = "10.1016/j.apcatb.2021.120359",

language = "English",

volume = "296",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Synergistic modulation of nanostructure and active sites

T2 - Ternary Ru&Fe-WOx electrocatalyst for boosting concurrent generations of hydrogen and formate over 500 mA cm-2

AU - Yang, Qifeng

AU - Zhang, Cunjin

AU - Dong, Bo

AU - Cui, Yuchen

AU - Wang, Feng

AU - Cai, Jiahao

AU - Jin, Peng

AU - Feng, Lai

PY - 2021/11/5

Y1 - 2021/11/5

N2 - Coupling methanol-to-formate oxidation (MFO) with hydrogen evolution reaction (HER) may promote hydrogen economics by introducing value-added anodic product. Herein, we develop a ternary catalyst Ru&Fe-WOx for boosting both HER and MFO in alkaline media. An electrode pair based on Ru&Fe-WOx delivers 10/100/500 mA/cm2 current density at a low cell-potential of 1.38/1.50/1.62 V with excellent durability and nearly 100 % Faradaic efficiency (FE), outperforming the benchmark pair of Pt/C||RuO2. By using integrated experimental and theoretical approaches, we verify synergy between WOx host and Ru&Fe-based dopants, which results in optimized H* adsorption on lattice oxygen (HER) as well as enhanced HCOO* desorption on ruthenium site (MFO). In addition, the unique nanostructure of Ru&Fe-WOx may further benefit to the mass transfer and catalyst robustness at large current density. This work thus demonstrates an integrated catalyst design, which is highly efficient for boosting concurrent, cost-effective and scalable production of hydrogen and formate.

AB - Coupling methanol-to-formate oxidation (MFO) with hydrogen evolution reaction (HER) may promote hydrogen economics by introducing value-added anodic product. Herein, we develop a ternary catalyst Ru&Fe-WOx for boosting both HER and MFO in alkaline media. An electrode pair based on Ru&Fe-WOx delivers 10/100/500 mA/cm2 current density at a low cell-potential of 1.38/1.50/1.62 V with excellent durability and nearly 100 % Faradaic efficiency (FE), outperforming the benchmark pair of Pt/C||RuO2. By using integrated experimental and theoretical approaches, we verify synergy between WOx host and Ru&Fe-based dopants, which results in optimized H* adsorption on lattice oxygen (HER) as well as enhanced HCOO* desorption on ruthenium site (MFO). In addition, the unique nanostructure of Ru&Fe-WOx may further benefit to the mass transfer and catalyst robustness at large current density. This work thus demonstrates an integrated catalyst design, which is highly efficient for boosting concurrent, cost-effective and scalable production of hydrogen and formate.

KW - Hierarchical nanostructure

KW - Hydrogen evolution reaction

KW - Methanol-to-formate oxidation

KW - Synergistic modulation

KW - d-band center

UR - https://www.scopus.com/pages/publications/85106385401

U2 - 10.1016/j.apcatb.2021.120359

DO - 10.1016/j.apcatb.2021.120359

M3 - Article

AN - SCOPUS:85106385401

SN - 0926-3373

VL - 296

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 120359

ER -

Synergistic modulation of nanostructure and active sites: Ternary Ru&Fe-WO_x electrocatalyst for boosting concurrent generations of hydrogen and formate over 500 mA cm^-2

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Keywords

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