Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency

Sheng Dai; Tzu Hsi Huang; Wei I. Liu; Chia Wei Hsu; Sheng Wei Lee; Tsan Yao Chen; Ya Chen Wang; Jeng Han Wang; Kuan Wen Wang

doi:10.1021/acs.nanolett.1c03483

Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency

Sheng Dai, Tzu Hsi Huang, Wei I. Liu, Chia Wei Hsu, Sheng Wei Lee, Tsan Yao Chen, Ya Chen Wang^*, Jeng Han Wang^*, Kuan Wen Wang^*

^*Corresponding author for this work

Department of Chemistry

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

41 Citations (Scopus)

Abstract

The electrochemical CO2 reduction reaction (CO2RR) represents a viable alternative to help close the anthropogenic carbon cycle and convert intermittent electricity from renewable energy sources to chemical energy in the form of value-added chemicals. The development of economic catalysts possessing high faradaic efficiency (FE) and mass activity (MA) toward CO2RR is critical in accelerating CO2 utilization technology. Herein, an elaborate Au?Cu catalyst where an alloyed AuCu shell caps on a Cu core (Cu@AuCu) is developed and evaluated for CO2-to-CO electrochemical conversion. Specific roles of Cu and Au for CO2RR are revealed in the alloyed core?shell structure, respectively, and a compositional- dependent volcano-plot is disclosed for the Cu@AuCu catalysts toward selective CO production. As a result, the Au2?Cu8 alloyed core?shell catalyst (only 17% Au content) achieves an FECO value as high as 94% and an MACO of 439 mA/mgAu at ?0.8 V (vs RHE), superior to the values for pure Au, reflecting its high noble metal utilization efficiency.

Original language	English
Pages (from-to)	9293-9300
Number of pages	8
Journal	Nano Letters
Volume	21
Issue number	21
DOIs	https://doi.org/10.1021/acs.nanolett.1c03483
Publication status	Published - 2021 Nov 10

Keywords

Au?cu catalyst
Co selectivity
Core?shell structure
Dft calculation
Electrochemical co2 reduction reaction

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acs.nanolett.1c03483

Cite this

@article{f44b9948833b484bab9171557bc532b2,

title = "Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency",

abstract = "The electrochemical CO2 reduction reaction (CO2RR) represents a viable alternative to help close the anthropogenic carbon cycle and convert intermittent electricity from renewable energy sources to chemical energy in the form of value-added chemicals. The development of economic catalysts possessing high faradaic efficiency (FE) and mass activity (MA) toward CO2RR is critical in accelerating CO2 utilization technology. Herein, an elaborate Au?Cu catalyst where an alloyed AuCu shell caps on a Cu core (Cu@AuCu) is developed and evaluated for CO2-to-CO electrochemical conversion. Specific roles of Cu and Au for CO2RR are revealed in the alloyed core?shell structure, respectively, and a compositional- dependent volcano-plot is disclosed for the Cu@AuCu catalysts toward selective CO production. As a result, the Au2?Cu8 alloyed core?shell catalyst (only 17% Au content) achieves an FECO value as high as 94% and an MACO of 439 mA/mgAu at ?0.8 V (vs RHE), superior to the values for pure Au, reflecting its high noble metal utilization efficiency.",

keywords = "Au?cu catalyst, Co selectivity, Core?shell structure, Dft calculation, Electrochemical co2 reduction reaction",

author = "Sheng Dai and Huang, {Tzu Hsi} and Liu, {Wei I.} and Hsu, {Chia Wei} and Lee, {Sheng Wei} and Chen, {Tsan Yao} and Wang, {Ya Chen} and Wang, {Jeng Han} and Wang, {Kuan Wen}",

year = "2021",

month = nov,

day = "10",

doi = "10.1021/acs.nanolett.1c03483",

language = "English",

volume = "21",

pages = "9293--9300",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "21",

}

TY - JOUR

T1 - Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency

AU - Dai, Sheng

AU - Huang, Tzu Hsi

AU - Liu, Wei I.

AU - Hsu, Chia Wei

AU - Lee, Sheng Wei

AU - Chen, Tsan Yao

AU - Wang, Ya Chen

AU - Wang, Jeng Han

AU - Wang, Kuan Wen

PY - 2021/11/10

Y1 - 2021/11/10

N2 - The electrochemical CO2 reduction reaction (CO2RR) represents a viable alternative to help close the anthropogenic carbon cycle and convert intermittent electricity from renewable energy sources to chemical energy in the form of value-added chemicals. The development of economic catalysts possessing high faradaic efficiency (FE) and mass activity (MA) toward CO2RR is critical in accelerating CO2 utilization technology. Herein, an elaborate Au?Cu catalyst where an alloyed AuCu shell caps on a Cu core (Cu@AuCu) is developed and evaluated for CO2-to-CO electrochemical conversion. Specific roles of Cu and Au for CO2RR are revealed in the alloyed core?shell structure, respectively, and a compositional- dependent volcano-plot is disclosed for the Cu@AuCu catalysts toward selective CO production. As a result, the Au2?Cu8 alloyed core?shell catalyst (only 17% Au content) achieves an FECO value as high as 94% and an MACO of 439 mA/mgAu at ?0.8 V (vs RHE), superior to the values for pure Au, reflecting its high noble metal utilization efficiency.

AB - The electrochemical CO2 reduction reaction (CO2RR) represents a viable alternative to help close the anthropogenic carbon cycle and convert intermittent electricity from renewable energy sources to chemical energy in the form of value-added chemicals. The development of economic catalysts possessing high faradaic efficiency (FE) and mass activity (MA) toward CO2RR is critical in accelerating CO2 utilization technology. Herein, an elaborate Au?Cu catalyst where an alloyed AuCu shell caps on a Cu core (Cu@AuCu) is developed and evaluated for CO2-to-CO electrochemical conversion. Specific roles of Cu and Au for CO2RR are revealed in the alloyed core?shell structure, respectively, and a compositional- dependent volcano-plot is disclosed for the Cu@AuCu catalysts toward selective CO production. As a result, the Au2?Cu8 alloyed core?shell catalyst (only 17% Au content) achieves an FECO value as high as 94% and an MACO of 439 mA/mgAu at ?0.8 V (vs RHE), superior to the values for pure Au, reflecting its high noble metal utilization efficiency.

KW - Au?cu catalyst

KW - Co selectivity

KW - Core?shell structure

KW - Dft calculation

KW - Electrochemical co2 reduction reaction

UR - http://www.scopus.com/inward/record.url?scp=85119617717&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85119617717&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.1c03483

DO - 10.1021/acs.nanolett.1c03483

M3 - Article

C2 - 34723555

AN - SCOPUS:85119617717

SN - 1530-6984

VL - 21

SP - 9293

EP - 9300

JO - Nano Letters

JF - Nano Letters

IS - 21

ER -

Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this