Coupling continuous CO2 electroreduction to formate with efficient Ni-based anodes

Díaz‐Sainz, Guillermo; Fernández-Caso, Kevin; Lagarteira, Tiago; Delgado, Sofia; Alvarez‐Guerra, Manuel; Mendes, Adélio; Irabien, Angel

doi:10.1016/j.jece.2022.109171

Cited by 18 publications

(9 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the policy of “carbon peak and carbon neutrality” was advocated, energy conservation and emission reduction have become the consensus of all mankind. The development of green energy technology is extremely critical to reduce carbon dioxide emissions [ 1 ]. The preparation of green hydrogen occupies an important strategic position in the future.…”

Section: Introductionmentioning

confidence: 99%

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

et al. 2023

View full text Add to dashboard Cite

We adopted a simple one-step electrochemical deposition to acquire an efficient nickel cobalt phosphorus (NiCoP) catalyst, which avoided the high temperature phosphatization engineering involved in the traditional synthesis method. The effects of electrolyte composition and deposition time on electrocatalytic performance were studied systematically. The as-prepared NiCoP achieved the lowest overpotential (η10 = 111 mV in the acidic condition and η10 = 120 mV in the alkaline condition) for the hydrogen evolution reaction (HER). Under 1 M KOH conditions, optimal oxygen evolution reaction (OER) activity (η10 = 276 mV) was also observed. Furthermore, the bifunctional NiCoP catalyst enabled a high-efficiency overall water-splitting by applying an external potential of 1.69 V. The surface valence and structural evolution of NiCoP samples with slowly decaying stability under alkaline conditions are revealed by XPS. The NiCoP is reconstructed into the Ni(Co)(OH)2 (for HER) and Ni(Co)OOH (for OER) on the surface with P element loss, acting as real “active sites”.

show abstract

Section: Introductionmentioning

confidence: 99%

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

et al. 2023

View full text Add to dashboard Cite

show abstract

“…They normally used bipolar membranes that could generate large amounts of CO 2 in situ. We can also highlight many works by A. Irabien et al [ 28 , 29 , 30 , 31 , 32 , 33 ] centered on the electroreduction of CO 2 towards high added value products such as methane, methanol, formic acid, ethylene, etc. These works focused on catalysts derived from copper and nickel to enhance the selectivity and efficiency of the CO 2 ER.…”

Section: Introductionmentioning

confidence: 78%

Strategies to Enhance CO2 Electrochemical Reduction from Reactive Carbon Solutions

2023

View full text Add to dashboard Cite

CO2 electrochemical reduction (CO2ER) from (bi)carbonate feed presents an opportunity to efficiently couple this process to alkaline-based carbon capture systems. Likewise, while this method of reducing CO2 currently lags behind CO2 gas-fed electrolysers in certain performance metrics, it offers a significant improvement in CO2 utilization which makes the method worth exploring. This paper presents two simple modifications to a bicarbonate-fed CO2ER system that enhance the selectivity towards CO. Specifically, a modified hydrophilic cathode with Ag catalyst loaded through electrodeposition and the addition of dodecyltrimethylammonium bromide (DTAB), a low-cost surfactant, to the catholyte enabled the system to achieve a FECO of 85% and 73% at 100 and 200 mA·cm−2, respectively. The modifications were tested in 4 h long experiments where DTAB helped maintain FECO stable even when the pH of the catholyte became more alkaline, and it improved the CO2 utilization compared to a system without DTAB.

show abstract

“…However, this anode configuration can be degraded under alkaline conditions due to binder/anolyte interaction, thus decreasing the activity and stability of the anode. Therefore, the choice of binder and its proportion in the catalytic ink is a critical factor in the proper development of an anodic reaction …”

Section: State Of the Art Of Continuous Electrochemical Co2 Reactors ...mentioning

confidence: 99%

“…Therefore, the choice of binder and its proportion in the catalytic ink is a critical factor in the proper development of an anodic reaction. 229 The maximum current densities reported for Pt-based anodes, DSAs, and particulate anodes do not exceed 500 mA•cm −2 . However, Ni foams work at higher current densities (e.g., refs 117, 118, 186) due to their intrinsic porosity, which increasing mass transport of the species involved in the OER (Column 5, Table 1).…”

Section: Counter Electrode Configuration and Anodementioning

confidence: 99%

Electroreduction of CO₂: Advances in the Continuous Production of Formic Acid and Formate

et al. 2023

Self Cite

View full text Add to dashboard Cite

The study of the electrochemical CO 2 reduction to obtain formate (HCOO − ) or formic acid (HCOOH) is receiving much attention as a promising technology. Since continuous−mode operation has become necessary for practical implementation of electrochemical CO 2 reduction, recent years have seen a rapid increase in the number of research approaches focusing on this aspect. This Focus Review provides a unified discussion of the available studies on the continuous electroreduction of CO 2 to HCOO − /HCOOH, considering the different important features of process design. Moreover, this paper quantitatively assesses the performance of different studies that involve continuous electrochemical reactors for converting CO 2 to HCOOH/HCOO − , comparing relevant typically used figures of merit, including energy consumption. Although some relevant trade-offs have already been achieved, the simultaneous optimization of all the figures of merit remains a challenge. Finally, concluding remarks highlight the detected trends and discuss relevant aspects that will have to be tackled by future studies in this field.

show abstract

Coupling continuous CO2 electroreduction to formate with efficient Ni-based anodes

Cited by 18 publications

References 72 publications

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

Strategies to Enhance CO2 Electrochemical Reduction from Reactive Carbon Solutions

Electroreduction of CO₂: Advances in the Continuous Production of Formic Acid and Formate

Contact Info

Product

Resources

About

Coupling continuous CO2 electroreduction to formate with efficient Ni-based anodes

Cited by 18 publications

References 72 publications

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

One-Step Electrochemical Synthesis and Surface Reconstruction of NiCoP as an Electrocatalyst for Bifunctional Water Splitting

Strategies to Enhance CO2 Electrochemical Reduction from Reactive Carbon Solutions

Electroreduction of CO2: Advances in the Continuous Production of Formic Acid and Formate

Contact Info

Product

Resources

About

Electroreduction of CO₂: Advances in the Continuous Production of Formic Acid and Formate