Poly(ionic liquid)-based bimetallic tandem catalysts for highly efficient carbon dioxide electroreduction

Xiao Qiang Li; Guo Yi Duan; Rui Wang; Li Jun Han; Yao Feng Wang; Bao Hua Xu

doi:10.1016/j.apcatb.2022.121459

Poly(ionic liquid)-based bimetallic tandem catalysts for highly efficient carbon dioxide electroreduction

Xiao Qiang Li, Guo Yi Duan^*, Rui Wang, Li Jun Han, Yao Feng Wang, Bao Hua Xu^*

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

Poly(ionic liquid)-metal (PIL-metal) hybrids were developed as a platform for facilely constructing tandem catalysts to reach highly efficient electrocatalytic reduction of CO₂ (CO₂RR). By introducing extra metal with distinct CO₂RR response to Cu-PIL hybrids, Cu@PIL@Ag and Cu@PIL@Bi were obtained. Remarkably, Cu@PIL@Ag exhibits an excellent C₂₊ Faradaic efficiency (FE_C2+) of 83.2% with a high partial current density (j_C2+) of 416.1 mA cm^–2 in 3 M KOH and an even higher j_C2+ (708.9 mA cm^–2) in 1 M KOH, while Cu@PIL@Bi possesses high FE_C1 (> 60%) and low FE_C2+ (< 5%) in a wide potential range. Mechanistic studies demonstrate the output of such a tandem system, either synergistic or maladjusted, depends on not only CO₂RR response of Ag and Bi but also specific Cu-Ag and Cu-Bi interactions. Besides, the PIL layer could adjust the reactivity by promoting the dispersion and availability of active sites and enriching the local key intermediates.

Original language	English
Article number	121459
Journal	Applied Catalysis B: Environmental
Volume	313
DOIs	https://doi.org/10.1016/j.apcatb.2022.121459
Publication status	Published - 15 Sept 2022
Externally published	Yes

Keywords

CO conversion
Electrocatalysis
Electrolysis
Ionic liquids
Organic-inorganic hybrids

Access to Document

10.1016/j.apcatb.2022.121459

Cite this

@article{74889adba4ff4ab391d26afcd1927e76,

title = "Poly(ionic liquid)-based bimetallic tandem catalysts for highly efficient carbon dioxide electroreduction",

abstract = "Poly(ionic liquid)-metal (PIL-metal) hybrids were developed as a platform for facilely constructing tandem catalysts to reach highly efficient electrocatalytic reduction of CO2 (CO2RR). By introducing extra metal with distinct CO2RR response to Cu-PIL hybrids, Cu@PIL@Ag and Cu@PIL@Bi were obtained. Remarkably, Cu@PIL@Ag exhibits an excellent C2+ Faradaic efficiency (FEC2+) of 83.2% with a high partial current density (jC2+) of 416.1 mA cm–2 in 3 M KOH and an even higher jC2+ (708.9 mA cm–2) in 1 M KOH, while Cu@PIL@Bi possesses high FEC1 (> 60%) and low FEC2+ (< 5%) in a wide potential range. Mechanistic studies demonstrate the output of such a tandem system, either synergistic or maladjusted, depends on not only CO2RR response of Ag and Bi but also specific Cu-Ag and Cu-Bi interactions. Besides, the PIL layer could adjust the reactivity by promoting the dispersion and availability of active sites and enriching the local key intermediates.",

keywords = "CO conversion, Electrocatalysis, Electrolysis, Ionic liquids, Organic-inorganic hybrids",

author = "Li, {Xiao Qiang} and Duan, {Guo Yi} and Rui Wang and Han, {Li Jun} and Wang, {Yao Feng} and Xu, {Bao Hua}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = sep,

day = "15",

doi = "10.1016/j.apcatb.2022.121459",

language = "English",

volume = "313",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Poly(ionic liquid)-based bimetallic tandem catalysts for highly efficient carbon dioxide electroreduction

AU - Li, Xiao Qiang

AU - Duan, Guo Yi

AU - Wang, Rui

AU - Han, Li Jun

AU - Wang, Yao Feng

AU - Xu, Bao Hua

PY - 2022/9/15

Y1 - 2022/9/15

N2 - Poly(ionic liquid)-metal (PIL-metal) hybrids were developed as a platform for facilely constructing tandem catalysts to reach highly efficient electrocatalytic reduction of CO2 (CO2RR). By introducing extra metal with distinct CO2RR response to Cu-PIL hybrids, Cu@PIL@Ag and Cu@PIL@Bi were obtained. Remarkably, Cu@PIL@Ag exhibits an excellent C2+ Faradaic efficiency (FEC2+) of 83.2% with a high partial current density (jC2+) of 416.1 mA cm–2 in 3 M KOH and an even higher jC2+ (708.9 mA cm–2) in 1 M KOH, while Cu@PIL@Bi possesses high FEC1 (> 60%) and low FEC2+ (< 5%) in a wide potential range. Mechanistic studies demonstrate the output of such a tandem system, either synergistic or maladjusted, depends on not only CO2RR response of Ag and Bi but also specific Cu-Ag and Cu-Bi interactions. Besides, the PIL layer could adjust the reactivity by promoting the dispersion and availability of active sites and enriching the local key intermediates.

AB - Poly(ionic liquid)-metal (PIL-metal) hybrids were developed as a platform for facilely constructing tandem catalysts to reach highly efficient electrocatalytic reduction of CO2 (CO2RR). By introducing extra metal with distinct CO2RR response to Cu-PIL hybrids, Cu@PIL@Ag and Cu@PIL@Bi were obtained. Remarkably, Cu@PIL@Ag exhibits an excellent C2+ Faradaic efficiency (FEC2+) of 83.2% with a high partial current density (jC2+) of 416.1 mA cm–2 in 3 M KOH and an even higher jC2+ (708.9 mA cm–2) in 1 M KOH, while Cu@PIL@Bi possesses high FEC1 (> 60%) and low FEC2+ (< 5%) in a wide potential range. Mechanistic studies demonstrate the output of such a tandem system, either synergistic or maladjusted, depends on not only CO2RR response of Ag and Bi but also specific Cu-Ag and Cu-Bi interactions. Besides, the PIL layer could adjust the reactivity by promoting the dispersion and availability of active sites and enriching the local key intermediates.

KW - CO conversion

KW - Electrocatalysis

KW - Electrolysis

KW - Ionic liquids

KW - Organic-inorganic hybrids

UR - http://www.scopus.com/inward/record.url?scp=85129037881&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2022.121459

DO - 10.1016/j.apcatb.2022.121459

M3 - Article

AN - SCOPUS:85129037881

SN - 0926-3373

VL - 313

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 121459

ER -

Poly(ionic liquid)-based bimetallic tandem catalysts for highly efficient carbon dioxide electroreduction

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this