Boosting the faradaic efficiency for carbon dioxide to monoxide on a phthalocyanine cobalt based gas diffusion electrode to higher than 99% via microstructure regulation of catalyst layer

Wan, Qiqi; He, Qichuan; Zhang, Yang; Zhang, Longhai; Li, Jin; Hou, Junbo; Zhuang, Xiaodong; Ke, Changchun; Zhang, Junliang

doi:10.1016/j.electacta.2021.139023

Cited by 19 publications

(18 citation statements)

References 34 publications

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“…Currently, few materials have achieved a direct transition from homogeneous catalysis to industrially relevant gas diffusion electrodes (GDEs) [19,67]. Concretely, GDEs shorten the diffusion pathways of CO 2 to the catalytic centers compared to H-type cells involving liquid electrolytes, achieving current densities greater than 50 mA cm −2 under aqueous conditions [68].…”

Section: Heterogeneous Electrocatalysismentioning

confidence: 99%

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

et al. 2022

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We report herein the preparation and characterization of six readily assembled bis-coordinated homoleptic silver(I) N,N′-bis(arylimino)acenaphthene (BIAN) complexes of general structure [Ag(I)(BIAN)2]BF4 and the influence of the electronic properties of the ligand substitution pattern on their performance in electrochemical CO2 reduction (CO2R). All the explored catalysts displayed substantial current enhancements in carbon-dioxide-saturated solvents dependent on the ligated BIAN and no significant concurrent H2 evolution when utilizing 2% H2O as a proton source. Additionally, preliminary studies, employing a drop-casted ink of 0.4 mg cm−2 [Ag(I)(4-OMe-BIAN)2]BF4 (Ag4) immobilized onto carbon paper gas diffusion electrodes in a flow cell with 1M KHCO3 aqueous electrolyte, resulted in a propitious Faradaic efficiency of 51% for CO at a current density of 50 mA cm−2.

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Section: Heterogeneous Electrocatalysismentioning

confidence: 99%

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

et al. 2022

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“…In almost half of the cases (47%), Ir was employed as the anode catalyst, ,,,,,,,,− Another 30% and 14% account for Ni − ,,,,− ,− and Pt, ,,− …”

Section: Oer Catalysts Studied In Co2 Electrolyzer Cells So Farmentioning

confidence: 99%

“…The colors consistently indicate the different catalysts. Data points were gathered from refs − , − , , , , and − …”

Section: Oer Catalysts Studied In Co2 Electrolyzer Cells So Farmentioning

confidence: 99%

“…Diagrams showing (A) the geometric area distribution of the electrolyzer cells used (data points were gathered from refs − , − , , , , − …”

Section: Oer Catalysts Studied In Co2 Electrolyzer Cells So Farmentioning

confidence: 99%

“…Current density as a function of the length of the experiment, marking (A) the different anode catalysts (data points were gathered from refs − , − , , , , and − …”

Section: Oer Catalysts Studied In Co2 Electrolyzer Cells So Farmentioning

confidence: 99%

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Anode Catalysts in CO₂ Electrolysis: Challenges and Untapped Opportunities

et al. 2022

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The field of electrochemical carbon dioxide reduction has developed rapidly during recent years. At the same time, the role of the anodic half-reaction has received considerably less attention. In this Perspective, we scrutinize the reports on the best-performing CO 2 electrolyzer cells from the past 5 years, to shed light on the role of the anodic oxygen evolution catalyst. We analyze how different cell architectures provide different local chemical environments at the anode surface, which in turn determines the pool of applicable anode catalysts. We uncover the factors that led to either a strikingly high current density operation or an exceptionally long lifetime. On the basis of our analysis, we provide a set of criteria that have to be fulfilled by an anode catalyst to achieve high performance. Finally, we provide an outlook on using alternative anode reactions (alcohol oxidation is discussed as an example), resulting in high-value products and higher energy efficiency for the overall process.

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Einfluss von Eisenionen auf die Niedertemperatur CO₂ Elektrolyse

et al. 2023

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Electrochemical energy conversion devices are considered key in reducing CO2 emissions and significant efforts are being applied to accelerate device development. Unlike other technologies, low temperature electrolyzers have the ability to directly convert CO2 into a range of value‐added chemicals. To make them commercially viable, however, device efficiency and durability must be increased. Although their design is similar to more mature water electrolyzers and fuel cells, new cell concepts and components are needed. Due to the complexity of the system, singular component optimization is common. As a result, the component interplay is often overlooked. The influence of Fe‐species clearly shows that the cell must be considered holistically during optimization, to avoid future issues due to component interference or cross‐contamination. Fe‐impurities are ubiquitous, and their influence on single components is well‐researched. The activity of non‐noble anodes has been increased through the deliberate addition of iron. At the same time, however, Fe‐species accelerate cathode and membrane degradation. Here, we interpret literature on single components to gain an understanding of how Fe‐species influence low temperature CO2 electrolyzers holistically. The role of Fe‐species serves to highlight the need for considerations regarding component interplay in general.

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Boosting the faradaic efficiency for carbon dioxide to monoxide on a phthalocyanine cobalt based gas diffusion electrode to higher than 99% via microstructure regulation of catalyst layer

Cited by 19 publications

References 34 publications

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

Anode Catalysts in CO₂ Electrolysis: Challenges and Untapped Opportunities

Einfluss von Eisenionen auf die Niedertemperatur CO₂ Elektrolyse

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Boosting the faradaic efficiency for carbon dioxide to monoxide on a phthalocyanine cobalt based gas diffusion electrode to higher than 99% via microstructure regulation of catalyst layer

Cited by 19 publications

References 34 publications

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

Tuning the Electronic Properties of Homoleptic Silver(I) bis-BIAN Complexes towards Efficient Electrocatalytic CO2 Reduction

Anode Catalysts in CO2 Electrolysis: Challenges and Untapped Opportunities

Einfluss von Eisenionen auf die Niedertemperatur CO2 Elektrolyse

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Anode Catalysts in CO₂ Electrolysis: Challenges and Untapped Opportunities

Einfluss von Eisenionen auf die Niedertemperatur CO₂ Elektrolyse