Comparative analysis of electrolyzers for electrochemical carbon dioxide conversion

Gao, Guofu; Obasanjo, Cornelius A.; Crane, Jackson; Dinh, Cao‐Thang

doi:10.1016/j.cattod.2023.114284

Cited by 9 publications

(4 citation statements)

References 197 publications

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“…eCO 2 RR, powered by renewable electricity, offers a compelling approach for mitigating CO 2 emissions while producing valuable fuels and chemicals . To evaluate the catalytic performance of clusters 1 and 2 in eCO 2 RR, we employed a membrane electrode assembly (MEA) cell configuration (see Figure S12) that enables CO 2 reduction at densities that are much higher than those of H-cells because gaseous CO 2 is delivered in close proximity to the liquid-immersed catalyst. , Iridium oxide coated on a titanium (Ti) felt was used as the anode, and an anion exchange membrane was employed to separate the cathode and anode (Figure S12).…”

Section: Resultsmentioning

confidence: 99%

Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Levchenko,

Yi,

Aloisio

et al. 2024

ACS Catal.

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Supported gold nanoclusters of the formula [Au 13 (L) 5 Cl 2 ] 3+ where L = Nheterocyclic carbene (NHC) or phosphine ligands are examined in the electrocatalytic CO 2 reduction reaction (eCO 2 RR) in a membrane electrode assembly cell configuration. Gold nanoclusters bearing bisNHC ligands are shown to exhibit improved catalytic performance compared with diphosphine-stabilized nanoclusters after activation at the optimum treatment temperatures. The thermal properties of the nanoclusters are shown to have a significant impact on their catalytic activity. Thermogravimetric analysis, UV−vis absorption spectroscopy, and X-ray photoelectron spectroscopy revealed that thermal treatment of [Au 13 (diphosphine) 5 Cl 2 ] 3+ nanoclusters results in complete loss of diphosphine ligands while [Au 13 (bisNHC) 5 Cl 2 ] 3+ nanoclusters show stepwise and partial removal of bisNHC ligands. We propose that the partial removal of bisNHC ligands enables efficient activation of [Au 13 (bisNHC) 5 Cl 2 ] 3+ clusters while conserving the core structure. This leads to the implication that intact clusters retaining at least some ligands in their coordination environment are more active than ligand-free clusters.

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Section: Resultsmentioning

confidence: 99%

Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Levchenko,

Yi,

Aloisio

et al. 2024

ACS Catal.

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“…In a gas-phase ECR system, a gas diffusion electrode (GDE) is fabricated by depositing a CO 2 reduction catalyst layer onto a porous hydrophobic substrate . The gas diffusion layer allows CO 2 to access the catalyst surface, thus lowering the required diffusion length and improving mass transport. , Gas-phase electrolysis has achieved current densities beyond 1 A cm –2 …”

Section: Introductionmentioning

confidence: 99%

“…23 The gas diffusion layer allows CO 2 to access the catalyst surface, thus lowering the required diffusion length and improving mass transport. 24,25 Gas-phase electrolysis has achieved current densities beyond 1 A cm −2 . 26 Due to advances in the electrode design, modern ECR features high current density, product selectivity, energy efficiency, and single pass conversion.…”

Section: Introductionmentioning

confidence: 99%

Progress and Perspectives of Pulse Electrolysis for Stable Electrochemical Carbon Dioxide Reduction

Obasanjo,

Gao,

Khiarak

et al. 2023

Energy Fuels

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Electrochemical carbon dioxide (CO2) reduction (ECR) to fuels and chemicals is a promising approach to address anthropogenic CO2 emissions. Over the past few years, ECR technology has advanced significantly, leading to the demonstration at both relatively large scale and with high efficiency. Specifically, both product selectivity and energy efficiency at high current densities are approaching the target for practical application. However, stability, a critical performance metric for ECR economics, is still far from the performance required for widespread application. In ECR, the cathode is most prone to degradation due to catalyst reconstruction, electrode flooding, salt formation, and impurity deposition. Pulse electrolysis has emerged as a promising approach to mitigate these degradation pathways and improve the stability of the ECR systems. In this review, we first discuss key ECR cathode degradation mechanisms. Next, we highlight the progress toward designing stable ECR systems using pulse electrolysis. We also assess the prospects and challenges of applying pulse electrolysis toward sustainable and industrial ECR applications.

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“…While many successful electrocatalysts have been reported 1 , it is challenging for any catalyst to maintain good selectivity, activity and cost-effectiveness simultaneously. Recently, immense progress has been made in addressing key issues such as energy efficiency, single-pass utilization, product crossover, and carbonate formation 2 , 3 . Still, a clear winner electrochemical system, ready for industrial-level stability and scalability testing, has yet to be declared.…”

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confidence: 99%

The road to the electroreduction of CO2

2024

Commun Chem

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Comparative analysis of electrolyzers for electrochemical carbon dioxide conversion

Cited by 9 publications

References 197 publications

Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Progress and Perspectives of Pulse Electrolysis for Stable Electrochemical Carbon Dioxide Reduction

The road to the electroreduction of CO2

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Comparative analysis of electrolyzers for electrochemical carbon dioxide conversion

Cited by 9 publications

References 197 publications

Electrocatalytic CO2 Reduction with Atomically Precise Au13 Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Electrocatalytic CO2 Reduction with Atomically Precise Au13 Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Progress and Perspectives of Pulse Electrolysis for Stable Electrochemical Carbon Dioxide Reduction

The road to the electroreduction of CO2

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Product

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Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance

Electrocatalytic CO₂ Reduction with Atomically Precise Au₁₃ Nanoclusters: Effect of Ligand Shell on Catalytic Performance