Application of ionic liquids in CO2 capture and electrochemical reduction: A review

An, Xiaowei; Wang, Peifen; Ma, Xuli; Du, Xiaoze; Hao, Xiaogang; Yang, Zhaohui; Guan, Guoqing

doi:10.1016/j.crcon.2023.02.003

Cited by 26 publications

(2 citation statements)

References 114 publications

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“…As neat solvents, ILs create a stable local environment for reactions to occur and facilitate ions transport. [74,75] Their appeal lies in their conductivity, low volatility, high chemical and thermal stability, and wide electrochemical window. [15,76] Notably, the interaction between ILs and CO 2 plays a vital role in CO 2 absorption capacity and conversion.…”

Section: Ionic Liquids As Solvents And/or Electrolytes In Co 2 Rr Vs Hermentioning

confidence: 99%

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Leal‐Duaso,

Adjez,

Sánchez‐Sánchez

2024

ChemElectroChem

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The ionic solvents, including both ionic liquids (ILs) and deep eutectic solvents (DES), are deeply studied for their potential in the carbon dioxide (CO2) capture and its further electrochemical conversion using different electrocatalysts. The aim of this review is to present and critically compare the role of ILs and DES in the activation of the electrochemical CO2 reduction reaction (CO2RR) and suppression of the hydrogen evolution reaction (HER). Therefore, the most relevant advances in the use of these ionic solvents in CO2RR, either as neat reaction medium or as electrolyte in molecular solvents, have been summarized and discussed. A special focus has been made on comparing the current density, overpotential, faradaic efficiency and products selectivity of the CO2RR in the presence of the ionic solvents and relaying those results with their chemical composition. Herein, the most recent strategies reported in the literature based on the use of either DES or ILs for enhancing the electrocatalytic CO2 conversion are reviewed, and some new perspectives based on immobilized ILs at the electrode surface are discussed.

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Section: Ionic Liquids As Solvents And/or Electrolytes In Co 2 Rr Vs Hermentioning

confidence: 99%

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Leal‐Duaso,

Adjez,

Sánchez‐Sánchez

2024

ChemElectroChem

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“…CO 2 capture technologies are utilized to reduce emissions. These technologies include pre-combustion, post-combustion, and oxy-fuel combustion [ 137 , 138 ]. These methods are highlighted in Figure 5 .…”

Section: Perovskite Membranes In Carbon Dioxide Capturementioning

confidence: 99%

Perovskite Membranes: Advancements and Challenges in Gas Separation, Production, and Capture

et al. 2023

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Perovskite membranes have gained considerable attention in gas separation and production due to their unique properties such as high selectivity and permeability towards various gases. These membranes are composed of perovskite oxides, which have a crystalline structure that can be tailored to enhance gas separation performance. In oxygen enrichment, perovskite membranes are employed to separate oxygen from air, which is then utilized in a variety of applications such as combustion and medical devices. Moreover, perovskite membranes are investigated for carbon capture applications to reduce greenhouse gas emissions. Further, perovskite membranes are employed in hydrogen production, where they aid in the separation of hydrogen from other gases such as methane and carbon dioxide. This process is essential in the production of clean hydrogen fuel for various applications such as fuel cells and transportation. This paper provides a review on the utilization and role of perovskite membranes in various gas applications, including oxygen enrichment, carbon capture, and hydrogen production.

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Molecular Engineering of Poly(Ionic Liquid) for Direct and Continuous Production of Pure Formic Acid from Flue Gas

Li,

Zhang,

Liu

et al. 2024

Advanced Materials

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Electrochemical CO2 reduction reaction (CO2RR) offers a promising approach to close the carbon cycle and reduce reliance on fossil fuels. However, traditional decoupled CO2RR processes involve energy‐intensive CO2 capture, conversion, and product separation, which increases operational costs. Here, we report the development of a bismuth‐poly(ionic liquid) (Bi‐PIL) hybrid catalyst that exhibits exceptional electrocatalytic performance for CO2 conversion to formate. The Bi‐PIL catalyst achieves over 90% Faradaic efficiency for formate over a wide potential range, even at low 15% v/v CO2 concentrations typical of industrial flue gas. The biphenyl in PIL backbone affords hydrophobicity while maintaining high ionic conductivity, effectively mitigating the flooding issues. The PIL layer plays a crucial role as a CO2 concentrator and co‐catalyst that accelerates the CO2RR kinetics. Furthermore, we demonstrate the potential of Bi‐PIL catalysts in a solid‐state electrolyte (SSE) electrolyzer for the continuous and direct production of pure formic acid solutions from flue gas. Techno‐economic analysis suggests that this integrated process can produce formic acid at a significantly reduced cost compared to the traditional decoupled approaches. This work presents a promising strategy to overcome the challenges associated with low‐concentration CO2 utilization and streamline the production of valuable liquid fuels and chemicals from CO2.

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Application of ionic liquids in CO2 capture and electrochemical reduction: A review

Cited by 26 publications

References 114 publications

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Perovskite Membranes: Advancements and Challenges in Gas Separation, Production, and Capture

Molecular Engineering of Poly(Ionic Liquid) for Direct and Continuous Production of Pure Formic Acid from Flue Gas

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Application of ionic liquids in CO2 capture and electrochemical reduction: A review

Cited by 26 publications

References 114 publications

Role of Ionic Solvents in the Electrocatalytic CO2 Conversion and H2 Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO2 Conversion and H2 Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Perovskite Membranes: Advancements and Challenges in Gas Separation, Production, and Capture

Molecular Engineering of Poly(Ionic Liquid) for Direct and Continuous Production of Pure Formic Acid from Flue Gas

Contact Info

Product

Resources

About

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents