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Dongare S, Zeeshan M, Aydogdu AS, Dikki R, Kurtoğlu-Öztulum SF, Coskun OK, Muñoz M, Banerjee A, Gautam M, Ross RD, Stanley JS, Brower RS, Muchharla B, Sacci RL, Velázquez JM, Kumar B, Yang JY, Hahn C, Keskin S, Morales-Guio CG, Uzun A, Spurgeon JM, Gurkan B. Reactive capture and electrochemical conversion of CO 2 with ionic liquids and deep eutectic solvents. Chem Soc Rev 2024. [PMID: 38912871 DOI: 10.1039/d4cs00390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Ionic liquids (ILs) and deep eutectic solvents (DESs) have tremendous potential for reactive capture and conversion (RCC) of CO2 due to their wide electrochemical stability window, low volatility, and high CO2 solubility. There is environmental and economic interest in the direct utilization of the captured CO2 using electrified and modular processes that forgo the thermal- or pressure-swing regeneration steps to concentrate CO2, eliminating the need to compress, transport, or store the gas. The conventional electrochemical conversion of CO2 with aqueous electrolytes presents limited CO2 solubility and high energy requirement to achieve industrially relevant products. Additionally, aqueous systems have competitive hydrogen evolution. In the past decade, there has been significant progress toward the design of ILs and DESs, and their composites to separate CO2 from dilute streams. In parallel, but not necessarily in synergy, there have been studies focused on a few select ILs and DESs for electrochemical reduction of CO2, often diluting them with aqueous or non-aqueous solvents. The resulting electrode-electrolyte interfaces present a complex speciation for RCC. In this review, we describe how the ILs and DESs are tuned for RCC and specifically address the CO2 chemisorption and electroreduction mechanisms. Critical bulk and interfacial properties of ILs and DESs are discussed in the context of RCC, and the potential of these electrolytes are presented through a techno-economic evaluation.
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Affiliation(s)
- Saudagar Dongare
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Muhammad Zeeshan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Ahmet Safa Aydogdu
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Ruth Dikki
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Samira F Kurtoğlu-Öztulum
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, Sahinkaya Cad., Beykoz, 34820 Istanbul, Turkey
| | - Oguz Kagan Coskun
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Miguel Muñoz
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Avishek Banerjee
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Manu Gautam
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - R Dominic Ross
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Jared S Stanley
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Rowan S Brower
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Baleeswaraiah Muchharla
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Robert L Sacci
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - Jesús M Velázquez
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Bijandra Kumar
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Jenny Y Yang
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Christopher Hahn
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Seda Keskin
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Carlos G Morales-Guio
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alper Uzun
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Joshua M Spurgeon
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - Burcu Gurkan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
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Dongare S, Coskun OK, Cagli E, Stanley JS, Mir AQ, Brower RS, Velázquez JM, Yang JY, Sacci RL, Gurkan B. Key Experimental Considerations When Evaluating Functional Ionic Liquids for Combined Capture and Electrochemical Conversion of CO 2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9426-9438. [PMID: 38441476 DOI: 10.1021/acs.langmuir.3c03828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Ionic liquids (ILs) are considered functional electrolytes for the electrocatalytic reduction of CO2 (ECO2R) due to their role in the double-layer structure formation and increased CO2 availability at the electrode surface, which reduces the voltage requirement. However, not all ILs are the same, considering the purity and degree of the functionality of the IL. Further, there are critical experimental factors that impact the evaluation of ILs for ECO2R including the reference electrode, working electrode construction, cosolvent selection, cell geometry, and whether the electrochemical cell is a single compartment or a divided cell. Here, we describe improved synthesis methods of imidazolium cyanopyrrolide IL for electrochemical studies in consideration of precursor composition and reaction time. We explored how IL with cosolvents (i.e. acetonitrile, dimethylformamide, dimethyl sulfoxide, propylene carbonate, and n-methyl-2-pyrrolidone) affects conductivity, CO2 mass transport, and ECO2R activation overpotential together with the effects of electrode materials (Sn, Ag, Au, and glassy carbon). Acetonitrile was found to be the best solvent for lowering the onset potential and increasing the catalytic current density for the production of CO owing to the enhanced ion mobility in combination with the silver electrode. Further, the ECO2R activity of molecular catalysts Ni(cyclam)Cl2 and iron tetraphenylsulfonato porphyrin (FeTPPS) on the carbon cloth electrode maintained high Faradaic efficiencies for CO in the presence of the IL. This study presents best practices for examining nontraditional multifunctional electrolytes amenable to integrated CO2 capture and conversion technologies for homogeneous and heterogeneous ECO2R.
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Affiliation(s)
- Saudagar Dongare
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Oguz Kagan Coskun
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Eda Cagli
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jared S Stanley
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Ab Qayoom Mir
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Rowan S Brower
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Jesús M Velázquez
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Jenny Y Yang
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Robert L Sacci
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Burcu Gurkan
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Coskun OK, Muñoz M, Dongare S, Dean W, Gurkan BE. Understanding the Electrode-Electrolyte Interfaces of Ionic Liquids and Deep Eutectic Solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38341773 DOI: 10.1021/acs.langmuir.3c03397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2024]
Abstract
Developing unconventional electrolytes such as ionic liquids (ILs) and deep eutectic solvents (DESs) has led to remarkable advances in electrochemical energy storage and conversion devices. However, the understanding of the electrode-electrolyte interfaces of these electrolytes, specifically the liquid structure and the charge/electron transfer mechanism and rates, is lacking due to the complexity of molecular interactions, the difficulty in studying the buried interfaces with nanometer-scale resolution, and the distribution of the time scales for the various interfacial events. This Feature Article outlines the standing questions in the field, summarizes some of the exciting approaches and results, and discusses our contributions to probing the electrified interfaces by electrochemical impedance spectroscopy (EIS), surface-enhanced Raman spectroscopy (SERS), and neutron reflectivity (NR). The related findings are analyzed within electrical double-layer models to provide a framework for studying ILs, DESs, and, more broadly, the concentrated hydrogen-bonded electrolytes.
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Affiliation(s)
- Oguz Kagan Coskun
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Miguel Muñoz
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Saudagar Dongare
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - William Dean
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Burcu E Gurkan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Coskun OK, Dongare S, Doherty B, Klemm A, Tuckerman M, Gurkan B. Tailoring Electrochemical CO 2 Reduction on Copper by Reactive Ionic Liquid and Native Hydrogen Bond Donors. Angew Chem Int Ed Engl 2024; 63:e202312163. [PMID: 37874123 DOI: 10.1002/anie.202312163] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/13/2023] [Accepted: 10/24/2023] [Indexed: 10/25/2023]
Abstract
Electrochemical CO2 reduction (CO2 RR) on copper (Cu) shows promise for higher-value products beyond CO. However, challenges such as the limited CO2 solubility, high overpotentials, and the competing hydrogen evolution reaction (HER) in aqueous electrolytes hinder the practical realization. We propose a functionalized ionic liquid (IL) which generates ion-CO2 adducts and a hydrogen bond donor (HBD) upon CO2 absorption to modulate CO2 RR on Cu in a non-aqueous electrolyte. As revealed by transient voltammetry, electrochemical impedance spectroscopy (EIS), and in situ surface-enhanced Raman spectroscopy (SERS) complemented with image charge augmented quantum-mechanical/molecular mechanics (IC-QM/MM) computations, a unique microenvironment is constructed. In this microenvironment, the catalytic activity is primarily governed by the IL and HBD concentrations; former controlling the double layer thickness and the latter modulating the local proton availability. This translates to ample CO2 availability, reduced overpotential, and suppressed HER where C4 products are obtained. This study deepens the understanding of electrolyte effects in CO2 RR and the role of IL ions towards electrocatalytic microenvironment design.
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Affiliation(s)
- Oguz Kagan Coskun
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Saudagar Dongare
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Brian Doherty
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Aidan Klemm
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Mark Tuckerman
- Department of Chemistry, New York University, New York, NY 10003, USA
- Simons Center for Computational Physical Chemistry at, New York University, New York, NY 10003, USA
| | - Burcu Gurkan
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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Jia X, Qi K, Yang J, Fan Z, Hua Z, Wan X, Zhao Y, Mao Y, Yang D. Cd/Cd(OH) 2 Nanosheets Enhancing the Electrocatalytic Activity of CO 2 Reduction to CO. Chemistry 2023; 29:e202302613. [PMID: 37837322 DOI: 10.1002/chem.202302613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/16/2023]
Abstract
Electric-driven conversion of carbon dioxide (CO2 ) to carbon monoxide (CO) under mild reaction conditions offers a promising approach to mitigate the greenhouse effect and the energy crisis. Surface engineering is believed to be one of the prospective methods for enhancing the electrocatalytic activity of CO2 reduction. Herein, hydroxyl (OH) groups were successfully introduced to cadmium nanosheets to form cadmium and cadmium hydroxide nanocomposites (i. e. Cd/Cd(OH)2 nanosheets) via a facile two-step method. The as-prepared Cd/Cd(OH)2 /CP (CP indicates carbon paper) electrode displays excellent electrocatalytic activity for CO2 reduction to produce CO. The Faradaic efficiency of CO reaches 98.3 % and the current density achieves 23.8 mA cm-2 at -2.0 V vs. Ag/Ag+ in a CO2 -saturated 30 wt% 1-butyl-3-methylimidazole hexafluorophosphate ([Bmim]PF6 )-65 wt% acetonitrile (CH3 CN)-5 wt% water (H2 O) electrolyte. And the CO partial current density can reach up to 71.6 mA cm-2 with the CO Faradaic efficiency of more than 85 % at -2.3 V vs. Ag/Ag+ , which stands out against Cd/CP, Cd(OH)2 /CP, and Cd/CdO/CP electrodes. The excellent electrocatalytic performance of the Cd/Cd(OH)2 /CP electrode can be attributed to its unique structural properties, suitable OH groups, perfect interaction with electrolyte, abundant active sites and fast electron transfer rate.
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Affiliation(s)
- Xiaoyan Jia
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Kongsheng Qi
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jie Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Zixi Fan
- Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou, Henan, 450053, China
| | - Zhixin Hua
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiaoqi Wan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yuhua Zhao
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yidan Mao
- Henan Institute of Advanced Technology, Zhengzhou University Zhengzhou, Henan, 450053, China
| | - Dexin Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
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