Electrochemical conversion of CO2 requires selective catalysts and high solubility in the electrolyte to reduce energy requirement increase current efficiency. In this study, reduction reaction (CO2RR) over Ag electrodes acetonitrile-based electrolytes containing 0.1 M [EMIM][2-CNpyr] (1-ethyl-3-methylimidazolium 2-cyanopyrolide), a reactive ionic liquid (IL), is shown selectively (>94%) convert CO with stable density (6 mA·cm–2) for at least 12 h. The linear sweep voltammetry experiments...

Ionic liquids (ILs) are considered functional electrolytes for the electrocatalytic reduction of CO2 (ECO2R) due to their role in double-layer structure formation and increased availability at electrode surface, which reduces voltage requirement. However, not all ILs same, considering purity degree functionality IL. Further, there critical experimental factors that impact evaluation ECO2R including reference electrode, working construction, cosolvent selection, cell geometry, whether...

Abstract Electrochemical CO 2 reduction (CO RR) on copper (Cu) shows promise for higher‐value products beyond CO. However, challenges such as the limited solubility, high overpotentials, and competing hydrogen evolution reaction (HER) in aqueous electrolytes hinder practical realization. We propose a functionalized ionic liquid (IL) which generates ion‐CO adducts bond donor (HBD) upon absorption to modulate RR Cu non‐aqueous electrolyte. As revealed by transient voltammetry, electrochemical...

Imidazolium-based ionic liquids have led to enhanced CO2 electroreduction activity due cation effects at the cathode surface, stabilizing reaction intermediates and decreasing activation energy. In aqueous media, alkali cations are also known improve reduction on metals such as Ag, with enhancement attributed electrical double layer trending size of cation. However, effect a mixed catholyte solution in presence an imidazolium-based liquid has not been well-explored. Herein,...

Integrating transducer/sensing materials into microfluidic platforms has enhanced gas sensors′ sensitivity, selectivity, and response time while facilitating miniaturization. In this manuscript, microfluidics been integrated with non-planar microelectrode array functionalized ionic liquids (ILs) to develop a novel miniaturized electrochemical sensor architecture. The employs the IL 1-ethyl-3-methylimidazolium 2-cyanopyrolide ([EMIM][2-CNpyr]) as electrolyte capture molecule for detecting...

Abstract Electrochemical CO 2 reduction (CO RR) on copper (Cu) shows promise for higher‐value products beyond CO. However, challenges such as the limited solubility, high overpotentials, and competing hydrogen evolution reaction (HER) in aqueous electrolytes hinder practical realization. We propose a functionalized ionic liquid (IL) which generates ion‐CO adducts bond donor (HBD) upon absorption to modulate RR Cu non‐aqueous electrolyte. As revealed by transient voltammetry, electrochemical...

The roles of the ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF

Electrolytes consisting of choline (Ch) salts with acetate (Ac) and oxalate (Ox) anions were studied in mixtures ethylene glycol (EG), comparison to chloride (Cl)- bis(trifluorosulfonyl)imide (TFSI)-containing systems understand the impact anion size charge density on bulk electrolyte interfacial properties. These represent hydrogen-bonded concentrated electrolytes where Ch are H-bond acceptors (HBAs) EG is donor (HBD) 1:2 1:4 HBA:HBD ratios. Increased H-bonding Ch2Ox compacts liquid...

Abstract Formation of C−N bonds through the electrochemical utilization CO 2 and nitrogen containing compounds (N‐compounds) is appealing for purpose converting waste readily available sources or pollutants into value added chemicals at ambient conditions. Existing research predominantly explores these reactions independently, often in aqueous electrolytes, leading to challenges associated with competitive hydrogen evolution reaction (HER), low product selectivity, yield. Functional...

This work presents the functional design of an ionic liquid (IL) for reactive capture and conversion CO 2 (RCC) where enhanced Faradic efficiencies, stable electrolysis, lowered overpotentials were obtained toward C 2+ products on Ag Cu electrodes, respectively. Critical experimental factors that impact evaluation such electrolytes RCC including cosolvent selection, working electrode construction, reference choice, cell are discussed. As IL chemisorbs , changes in bulk viscosity conductivity...

Electrocatalysis of carbon dioxide reduction reaction (CO 2 RR) is known to proceed at lower overpotentials with the presence ionic liquids (ILs) in electrolyte. However, role ILs modulating CO RR, even for most studied 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF 4 ]) remains unclear. In this study, electric field and hydrogen bonding effects induced by [EMIM][BF ] bond donors (HBDs), including water a series alcohols, acetonitrile were examined on Ag. By employing voltammetry,...

Ionic liquids (ILs) are considered functional electrolytes for the electrocatalytic reduction of CO2 (ECO2R) due to their role in double-layer structure formation and increased availability at electrode surface, which reduces voltage requirement. However, not all ILs same considering purity degree functionality IL. Further, there critical experimental factors that impact evaluation ECO2R including reference electrode, working construction, co-solvent selection, cell geometry, whether...

Electrochemical conversion of CO 2 over copper catalyst is known to produce higher value products such as methane, ethylene, formate and alcohols in aqueous electrolytes. Since a stable molecule, the electrochemical reduction reaction requires significant overpotential (-1.9 V vs SHE) for first electron transfer form - . Ionic liquids (ILs) have high solubility can be further functionalized bind with that brought electrode surface more reactive state. In this study, we studied...

The dynamic interplay between a copper electrode and reactive ionic liquid is illustrated in the cover picture, showcasing key components electrochemical reduction of CO2. role cation covering surface in-situ generated hydrogen bond donor from CO2 binding to enhancing kinetics were uncovered by spectroscopy, complemented electroanalytical computational methods. Multi-carbon products with reduced reaction energy obtained, as reported Burcu Gurkan et al. their Research Article (e202312163)....

Electrochemical reduction of CO 2 into value-added fuels or chemical feedstocks is one several viable strategies for mitigating carbon dioxide waste. However, thermodynamically stable molecule requiring high energy to activate it making this process demanding. Therefore, selective catalysts and electrolytes with solubility are desired. Ionic liquids (ILs) versatile solvents tunable properties including electrochemical stability. Literature suggests that ILs co-catalyze the reaction can alter...

Excessive carbon dioxide (CO 2 ) emissions due to combustion of fossil fuels create serious impact on our atmosphere and will result in unwanted climate change species extinction. In addition the recent attempts establish environmentally sustainable energy sources advance CO capture sequestration technology, conversion into useful chemicals is a pragmatic approach for reducing its concentration [1]. this respect, electricity-powered electrochemical reduction (ECR) offers an exciting way...