Perovskite LSCM impregnated with vanadium pentoxide for high temperature carbon dioxide electrolysis

Xiaozhen Zhang; Lingting Ye; Jianping Hu; Jie Li; Weihui Jiang; Chung Jen Tseng; Kui Xie

doi:10.1016/j.electacta.2016.06.137

Perovskite LSCM impregnated with vanadium pentoxide for high temperature carbon dioxide electrolysis

Xiaozhen Zhang, Lingting Ye, Jianping Hu, Jie Li, Weihui Jiang, Chung Jen Tseng, Kui Xie

Department of Mechanical Engineering

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

32 Scopus citations

Abstract

Perovskite La_0.75Sr_0.25Cr_0.5Mn_0.5O_3-δ (LSCM) has been used as a typical cathode for CO₂ electrolysis in oxide-ion conducting solid oxide electrolyzers; however, the limited electrocatalytic activity still restricts electrode kinetic process. In this work, catalytic-active V₂O₅ nanocatalyst is impregnated in LSCM cathode to enhance electrocatalytic performance. Electrochemical measurements show that the loading of 2 wt% V₂O₅ significantly improves electrode activity and accordingly reduces electrode polarization resistance from 2.6 Ω•cm² for LSCM to 1.2 Ω^•Cm² for V₂O₅-LSCM in pure hydrogen. The current densities and Faradic efficiencies with V₂O₅-LSCM electrode are remarkably enhanced by 30% and 40% in contrast to bare LSCM electrode in the voltage region of 1.2-2.0 V at 800 °C for direct carbon dioxide electrolysis, respectively.

Original language	English
Pages (from-to)	32-40
Number of pages	9
Journal	Electrochimica Acta
Volume	212
DOIs	https://doi.org/10.1016/j.electacta.2016.06.137
State	Published - 10 Sep 2016

Keywords

Carbon dioxide
Electrolysis
LSCM
Solid oxide electrolyzer
VO

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10.1016/j.electacta.2016.06.137

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title = "Perovskite LSCM impregnated with vanadium pentoxide for high temperature carbon dioxide electrolysis",

abstract = "Perovskite La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) has been used as a typical cathode for CO2 electrolysis in oxide-ion conducting solid oxide electrolyzers; however, the limited electrocatalytic activity still restricts electrode kinetic process. In this work, catalytic-active V2O5 nanocatalyst is impregnated in LSCM cathode to enhance electrocatalytic performance. Electrochemical measurements show that the loading of 2 wt% V2O5 significantly improves electrode activity and accordingly reduces electrode polarization resistance from 2.6 Ω•cm2 for LSCM to 1.2 Ω•Cm2 for V2O5-LSCM in pure hydrogen. The current densities and Faradic efficiencies with V2O5-LSCM electrode are remarkably enhanced by 30% and 40% in contrast to bare LSCM electrode in the voltage region of 1.2-2.0 V at 800 °C for direct carbon dioxide electrolysis, respectively.",

keywords = "Carbon dioxide, Electrolysis, LSCM, Solid oxide electrolyzer, VO",

author = "Xiaozhen Zhang and Lingting Ye and Jianping Hu and Jie Li and Weihui Jiang and Tseng, {Chung Jen} and Kui Xie",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

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doi = "10.1016/j.electacta.2016.06.137",

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T1 - Perovskite LSCM impregnated with vanadium pentoxide for high temperature carbon dioxide electrolysis

AU - Zhang, Xiaozhen

AU - Ye, Lingting

AU - Hu, Jianping

AU - Li, Jie

AU - Jiang, Weihui

AU - Tseng, Chung Jen

AU - Xie, Kui

PY - 2016/9/10

Y1 - 2016/9/10

N2 - Perovskite La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) has been used as a typical cathode for CO2 electrolysis in oxide-ion conducting solid oxide electrolyzers; however, the limited electrocatalytic activity still restricts electrode kinetic process. In this work, catalytic-active V2O5 nanocatalyst is impregnated in LSCM cathode to enhance electrocatalytic performance. Electrochemical measurements show that the loading of 2 wt% V2O5 significantly improves electrode activity and accordingly reduces electrode polarization resistance from 2.6 Ω•cm2 for LSCM to 1.2 Ω•Cm2 for V2O5-LSCM in pure hydrogen. The current densities and Faradic efficiencies with V2O5-LSCM electrode are remarkably enhanced by 30% and 40% in contrast to bare LSCM electrode in the voltage region of 1.2-2.0 V at 800 °C for direct carbon dioxide electrolysis, respectively.

AB - Perovskite La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) has been used as a typical cathode for CO2 electrolysis in oxide-ion conducting solid oxide electrolyzers; however, the limited electrocatalytic activity still restricts electrode kinetic process. In this work, catalytic-active V2O5 nanocatalyst is impregnated in LSCM cathode to enhance electrocatalytic performance. Electrochemical measurements show that the loading of 2 wt% V2O5 significantly improves electrode activity and accordingly reduces electrode polarization resistance from 2.6 Ω•cm2 for LSCM to 1.2 Ω•Cm2 for V2O5-LSCM in pure hydrogen. The current densities and Faradic efficiencies with V2O5-LSCM electrode are remarkably enhanced by 30% and 40% in contrast to bare LSCM electrode in the voltage region of 1.2-2.0 V at 800 °C for direct carbon dioxide electrolysis, respectively.

KW - Carbon dioxide

KW - Electrolysis

KW - LSCM

KW - Solid oxide electrolyzer

KW - VO

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U2 - 10.1016/j.electacta.2016.06.137

DO - 10.1016/j.electacta.2016.06.137

M3 - 期刊論文

AN - SCOPUS:84978060376

SN - 0013-4686

VL - 212

SP - 32

EP - 40

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Perovskite LSCM impregnated with vanadium pentoxide for high temperature carbon dioxide electrolysis

Abstract

Keywords

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