ACS Publications. Most Trusted. Most Cited. Most Read
My Activity
CONTENT TYPES

Figure 1Loading Img

Voltage Loss Diagnosis in CO2 Electrolyzers Using Five-Electrode Technique

Cite this: ACS Energy Lett. 2022, 7, 12, 4504–4511
Publication Date (Web):November 15, 2022
https://doi.org/10.1021/acsenergylett.2c02096
Copyright © 2022 American Chemical Society

    Article Views

    4192

    Altmetric

    -

    Citations

    LEARN ABOUT THESE METRICS
    Other access options
    Supporting Info (1)»

    Abstract

    Abstract Image

    CO2 electrolysis is a promising carbon utilization technology. Currently, energetic efficiency still requires a significant improvement for commercialization. To rationally design a more efficient CO2 electrolyzer, diagnostic tools are necessary to pinpoint the source of voltage losses across the full cell at work. Here we develop a five-electrode technique to probe voltage drops at the cathode, anode, membrane, and their interfaces in a typical zero-gap cell. We show that the cathode/membrane ionic interface is the major source of overpotential, contributing 720 mV voltage loss at 600 mA cm–2. This loss can be mitigated by coating the catalyst directly onto the membrane to lower ionic resistances, reducing this voltage loss to 80 mV at the same current density. The improved design enables us to achieve a full cell performance of 3.55 V and >95% CO Faradaic efficiency at 800 mA cm–2, representing the highest performance for CO2 electrolysis with a dilute bicarbonate electrolyte. The insights provided by the five-electrode technique may guide the rational design of future membrane-based electrochemical cells.

    Read this article

    To access this article, please review the available access options below.

    Get instant access

    Purchase Access

    Read this article for 48 hours. Check out below using your ACS ID or as a guest.

    Recommended

    Access through Your Institution

    You may have access to this article through your institution.

    Your institution does not have access to this content. You can change your affiliated institution below.

    Supporting Information

    ARTICLE SECTIONS
    Jump To

    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsenergylett.2c02096.

    • Experimental details on materials, quasi-reference electrodes, cell design, electrochemical techniques, and additional experimental results, and including Figures S1–S21 and Tables S1–S7 (PDF)

    Terms & Conditions

    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

    This article is cited by 10 publications.

    1. Colin P. O’Brien, Rui Kai Miao, Ali Shayesteh Zeraati, Geonhui Lee, Edward H. Sargent, David Sinton. CO2 Electrolyzers. Chemical Reviews 2024, 124 (7) , 3648-3693. https://doi.org/10.1021/acs.chemrev.3c00206
    2. Yong Zhao, Zhen Shi, Feng Li, Chen Jia, Qian Sun, Zhen Su, Chuan Zhao. Deciphering Mesopore-Augmented CO2 Electroreduction over Atomically Dispersed Fe–N-doped Carbon Catalysts. ACS Catalysis 2024, 14 (6) , 3926-3932. https://doi.org/10.1021/acscatal.3c05144
    3. Chang Qiu, Zikai Xu, Feng-Yang Chen, Haotian Wang. Anode Engineering for Proton Exchange Membrane Water Electrolyzers. ACS Catalysis 2024, 14 (2) , 921-954. https://doi.org/10.1021/acscatal.3c05162
    4. Shusheng Wan, Huanlei Zhang, Ke Ye, Jieyang Li, Yucheng He, Xiaolin Ge, Tongwen Xu, Wen-Bin Cai, Meng Lin, Kun Jiang. Improving the Efficiencies of Water Splitting and CO2 Electrolysis by Anodic O2 Bubble Management. The Journal of Physical Chemistry Letters 2023, 14 (49) , 11217-11223. https://doi.org/10.1021/acs.jpclett.3c02902
    5. Hugo-Pieter Iglesias van Montfort, Siddhartha Subramanian, Erdem Irtem, Mark Sassenburg, Mengran Li, Jesse Kok, Joost Middelkoop, Thomas Burdyny. An Advanced Guide to Assembly and Operation of CO2 Electrolyzers. ACS Energy Letters 2023, 8 (10) , 4156-4161. https://doi.org/10.1021/acsenergylett.3c01561
    6. Robert Haaring, Phil Woong Kang, Zunmin Guo, Jae Won Lee, Hyunjoo Lee. Developing Catalysts Integrated in Gas-Diffusion Electrodes for CO2 Electrolyzers. Accounts of Chemical Research 2023, 56 (19) , 2595-2605. https://doi.org/10.1021/acs.accounts.3c00349
    7. Hunter Simonson, Walter Ellis Klein, Danielle Henckel, Sumit Verma, K. C. Neyerlin, Wilson A. Smith. Direct Measurement of Electrochemical Selectivity Gradients over a 25 cm2 Copper Gas Diffusion Electrode. ACS Energy Letters 2023, 8 (9) , 3811-3819. https://doi.org/10.1021/acsenergylett.3c01489
    8. Peter Mardle, Binyu Chen, Steven Holdcroft. Opportunities of Ionomer Development for Anion-Exchange Membrane Water Electrolysis. ACS Energy Letters 2023, 8 (8) , 3330-3342. https://doi.org/10.1021/acsenergylett.3c01040
    9. Bradie S. Crandall, Sean Overa, Haeun Shin, Feng Jiao. Turning Carbon Dioxide into Sustainable Food and Chemicals: How Electrosynthesized Acetate Is Paving the Way for Fermentation Innovation. Accounts of Chemical Research 2023, 56 (12) , 1505-1516. https://doi.org/10.1021/acs.accounts.3c00098
    10. Dorottya Hursán, Csaba Janáky. Operando characterization of continuous flow CO 2 electrolyzers: current status and future prospects. Chemical Communications 2023, 59 (11) , 1395-1414. https://doi.org/10.1039/D2CC06065E

    Pair your accounts.

    Export articles to Mendeley

    Get article recommendations from ACS based on references in your Mendeley library.

    Pair your accounts.

    Export articles to Mendeley

    Get article recommendations from ACS based on references in your Mendeley library.

    You’ve supercharged your research process with ACS and Mendeley!

    STEP 1:
    Click to create an ACS ID

    Please note: If you switch to a different device, you may be asked to login again with only your ACS ID.

    Please note: If you switch to a different device, you may be asked to login again with only your ACS ID.

    Please note: If you switch to a different device, you may be asked to login again with only your ACS ID.

    MENDELEY PAIRING EXPIRED
    Your Mendeley pairing has expired. Please reconnect