Gas phase electrochemical conversion of humidified CO2 to CO and H2 on proton-exchange and alkaline anion-exchange membrane fuel cell reactors

Guoliang Wang; Jian Pan; San Ping Jiang; Hui Yang

doi:10.1016/j.jcou.2017.11.010

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Gas phase electrochemical conversion of humidified CO2 to CO and H2 on proton-exchange and alkaline anion-exchange membrane fuel cell reactors

Journal article

Peer reviewed

Gas phase electrochemical conversion of humidified CO2 to CO and H2 on proton-exchange and alkaline anion-exchange membrane fuel cell reactors

Guoliang Wang, Jian Pan, San Ping Jiang and Hui Yang

Journal of CO2 Utilization, Vol.23, pp.152-158

2018

DOI: https://doi.org/10.1016/j.jcou.2017.11.010

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Abstract

electrochemical CO2 conversion

gas phase reaction

alkaline anion-exchange membrane

proton exchange membrane

fuel cell reactors

electrolyzers

Fuel cell reactors or electrolyzers based on alkaline anion-exchange membrane and proton exchange membrane (AAEM & PEM) are investigated for gas phase electrochemical conversion of humidified CO2 under identical conditions, using conventional Pt/C, Pd/C and Cu/CNTs as cathodic catalysts. Humidified CO2 can be converted to H2 and CO via the AAEM based fuel cell reactors with an estimated onset potential of -1.0 V using Cu/CNT as cathodic catalyst, while PEM based fuel cell reactors can only produce H2 under identical conditions. This can be attributed to the suppressed hydrogen evolution and enhanced CO2 reduction in the case of AAEM based reactor. Remarkably, AAEM based reactor with Cu/CNT cathode catalysts shows a higher activity (8.88 μmol h-1 cm-2) to convert CO2 to CO than that of Pd/C (7.59 μmol h-1 cm-2) and Pt/C (0.75 μmol h-1 cm-2) at the same catalyst loading. This study indicates that AAEM based reactor is able to realize the gas phase electrochemical conversion of CO2, providing a viable strategy for CO2 utilization and conversion to useful fuels.

Details

Title: Gas phase electrochemical conversion of humidified CO2 to CO and H2 on proton-exchange and alkaline anion-exchange membrane fuel cell reactors
Authors: Guoliang Wang (Author) - Curtin University
Jian Pan (Author) - Curtin University
San Ping Jiang (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Hui Yang (Author) - University of Chinese Academy of Sciences, China
Publication details: Journal of CO2 Utilization, Vol.23, pp.152-158
Publisher: Elsevier BV
Date published: 2018
DOI: 10.1016/j.jcou.2017.11.010
ISSN: 2212-9820
Grants: Oxide-based high temperature proton exchange membrane fuel cells, DP150102025, Australian Research Council (Australia, Canberra) - ARC
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99451190702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Multidisciplinary; Engineering, Chemical

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