Electrochemically created roughened lead plate for electrochemical reduction of aqueous CO2

He, Zhiqiao; Shen, Jie; Ni, Zhili; Tang, Juntao; Li, Lingxiangyu; Chen, Jianmeng; Zhao, Li

doi:10.1016/j.catcom.2015.08.024

Cited by 54 publications

(26 citation statements)

References 33 publications

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“…Liquid products were detected by nuclear magnetic resonance (NMR), while the gaseous ones were detected by gas chromatography (GC). The products in CO 2 RR with single-layer TA-Pb as pre-catalyst are formate, CO, and H 2 , which is in accordance with other reported Pb-based electrocatalysts [29][30][31] . And −0.92 V vs. reversible hydrogen electrode (RHE) is the optimum potential to achieve the highest formate FE ( Supplementary Fig.…”

Section: Resultssupporting

confidence: 91%

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

et al. 2020

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For most metal-containing CO 2 reduction reaction (CO 2 RR) electrocatalysts, the unavoidable self-reduction to zero-valence metal will promote hydrogen evolution, hence lowering the CO 2 RR selectivity. Thus it is challenging to design a stable phase with resistance to electrochemical self-reduction as well as high CO 2 RR activity. Herein, we report a scenario to develop hydrocerussite as a stable and active electrocatalyst via in situ conversion of a complex precursor, tannin-lead(II) (TA-Pb) complex. A comprehensive characterization reveals the in situ transformation of TA-Pb to cerussite (PbCO 3), and sequentially to hydrocerussite (Pb 3 (CO 3) 2 (OH) 2), which finally serves as a stable and active phase under CO 2 RR condition. Both experiments and theoretical calculations confirm the high activity and selectivity over hydrocerussite. This work not only offers a new approach of enhancing the selectivity in CO 2 RR by suppressing the self-reduction of electrode materials, but also provides a strategy for studying the reaction mechanism and active phases of electrocatalysts.

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Section: Resultssupporting

confidence: 91%

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

et al. 2020

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“…On Pb(111), the free energies of adsorption for OCHO*, COOH* and H* were calculated to be −0.01, 1.22 and 1.11 eV, which represent highly repulsive interactions with COOH* and H*. Interestingly, this theoretical expectation is in accordance with experimental results in that CO evolution on Pb electrodes is negligible regardless of the applied potential . Even though etched Pb foil shows considerable HER corresponding to approximately 50 % at −0.95 V vs. RHE due to the kinetic aspect, rest charges are utilized for HCOOH formation .…”

Section: Theoretical Considerationssupporting

confidence: 77%

Reaction Mechanisms of the Electrochemical Conversion of Carbon Dioxide to Formic Acid on Tin Oxide Electrodes

et al. 2017

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Recent reports on the electrochemical production of formate demonstrate that reduced metal oxides play a key role in activating stable CO2 molecules. To expand a pre‐existing design principle of catalysts to a higher level, one of the remaining issues is to clearly understand the reaction mechanism. In recent years, mechanistic studies on SnOx catalysts, one of the most popular candidates for CO2 conversion to formate, have been intensively conducted in various aspects. In this Minireview, we summarize the reaction mechanisms of formate production based on computational, electrokinetic and in situ analyses focusing on SnOx catalysts. Starting from theoretical points including key intermediates, reaction pathway, and selectivity for formate production over pure metals, the discussion is expanded to the reaction mechanism on oxide surface.

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“…[2][3][4] While various catalysts including Sn, In, and Pb have been explored for CO 2 RR to formate, these materials typically display low conversion rates and require high energy input. [5][6][7][8][9][10][11][12] Recently, metallic Bi and Bi 2 O 3 catalysts have been investigated for CO 2 RR, demonstrating high selectivity for formate production. [13][14][15][16][17] Most of these pioneering studies on Bi catalysts have focused on improving the CO 2 RR activity for formate production by Bi nanostructuring and alloying.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured β‐Bi₂O₃ Fractals on Carbon Fibers for Highly Selective CO₂ Electroreduction to Formate

Trần‐Phú

Daiyan

Fusco

et al. 2019

Adv Funct Materials

131

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Three-dimensional Bi 2 O 3 fractal nanostructures (f-Bi 2 O 3) were directly self-assembled on carbon fiber papers (CFP) using a scalable hot-aerosol synthesis strategy. This approach provides high versatility in modulating the physiochemical properties of the Bi 2 O 3 catalyst by a tailorable control of its crystalline size, loading, electron density as well as providing exposed stacking of the nanomaterials on the porous CFP substrate. As a result, when tested for electrochemical CO 2 reduction reactions (CO 2 RR), these f-Bi 2 O 3 electrodes demonstrated superior conversion of CO 2 to formate (HCOO-) with low onset overpotential and a high mass-specific formate partial current density of-52.2 mA mg-1 , which is ~ 3 times higher than that of the drop-casted control Bi 2 O 3 catalyst (-15.5 mA mg-1), and a high Faradaic This article is protected by copyright. All rights reserved. efficiency (FE HCOO-) of 87% at an applied potential of-1.2 V vs reversible hydrogen electrode (RHE). Our findings reveal that the high exposure of roughened -phase Bi 2 O 3 /Bi edges and the improved electron density of these fractal structures are key contributors in attainment of high CO 2 RR activity.

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Electrochemically created roughened lead plate for electrochemical reduction of aqueous CO2

Cited by 54 publications

References 33 publications

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Reaction Mechanisms of the Electrochemical Conversion of Carbon Dioxide to Formic Acid on Tin Oxide Electrodes

Nanostructured β‐Bi₂O₃ Fractals on Carbon Fibers for Highly Selective CO₂ Electroreduction to Formate

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Electrochemically created roughened lead plate for electrochemical reduction of aqueous CO2

Cited by 54 publications

References 33 publications

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Reaction Mechanisms of the Electrochemical Conversion of Carbon Dioxide to Formic Acid on Tin Oxide Electrodes

Nanostructured β‐Bi2O3 Fractals on Carbon Fibers for Highly Selective CO2 Electroreduction to Formate

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Nanostructured β‐Bi₂O₃ Fractals on Carbon Fibers for Highly Selective CO₂ Electroreduction to Formate