Electrochemical CO2 Reduction to Formic Acid at Low Overpotential and with High Faradaic Efficiency on Carbon-Supported Bimetallic Pd–Pt Nanoparticles

Hierarchical Cu pillar electrodes have shown enhanced electrochemical performance for CO2 reduction due to their increased surface area and controlled lattice property.

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Selective and Low Overpotential Electrochemical CO2 Reduction to Formate on CuS Decorated CuO Heterostructure

Catalysis Letters ◽

10.1007/s10562-019-02657-2 ◽

2019 ◽

Vol 149 (3) ◽

pp. 860-869 ◽

Cited By ~ 4

Author(s):

Amaha Woldu Kahsay ◽

Kassa Belay Ibrahim ◽

Meng-Che Tsai ◽

Mulatu Kassie Birhanu ◽

Soressa Abera Chala ◽

...

Keyword(s):

Co2 Reduction ◽

Electrochemical Co2 Reduction ◽

Low Overpotential

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Sn-Based Electrocatalyst Stability: A Crucial Piece to the Puzzle for the Electrochemical CO2 Reduction toward Formic Acid

ACS Energy Letters ◽

10.1021/acsenergylett.1c02049 ◽

2021 ◽

pp. 4317-4327

Author(s):

Kevin Van Daele ◽

Bert De Mot ◽

Marilia Pupo ◽

Nick Daems ◽

Deepak Pant ◽

...

Keyword(s):

Formic Acid ◽

Co2 Reduction ◽

Electrochemical Co2 Reduction

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Why do RuO2 electrodes catalyze electrochemical CO2 reduction to methanol rather than methane or perhaps neither of those?

Chemical Science ◽

10.1039/d0sc01882a ◽

2020 ◽

Vol 11 (35) ◽

pp. 9542-9553 ◽

Cited By ~ 2

Author(s):

Ebrahim Tayyebi ◽

Javed Hussain ◽

Egill Skúlason

Keyword(s):

Formic Acid ◽

Co2 Reduction ◽

Reduction Reaction ◽

Experimental Literature ◽

Energy Barriers ◽

Electrochemical Co2 Reduction

Energy barriers are calculated for the electrochemical CO2 reduction reaction on the RuO2(110) surface towards methanol, methane, formic acid, methanediol, CO and the competing H2 formation and compared with experimental literature.

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Highly dispersed CuFe-nitrogen active sites electrode for synergistic electrochemical CO2 reduction at low overpotential

Applied Energy ◽

10.1016/j.apenergy.2020.115029 ◽

2020 ◽

Vol 269 ◽

pp. 115029

Author(s):

Fuhuan Wang ◽

Heping Xie ◽

Tao Liu ◽

Yifan Wu ◽

Bin Chen

Keyword(s):

Active Sites ◽

Co2 Reduction ◽

Electrochemical Co2 Reduction ◽

Highly Dispersed ◽

Low Overpotential

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Electrochemical Reduction of CO2 to CO on Hydrophobic Zn Foam Rod in a Microchannel Electrochemical Reactor

Processes ◽

10.3390/pr9091592 ◽

2021 ◽

Vol 9 (9) ◽

pp. 1592

Author(s):

Chunxiao Zhang ◽

Shenglin Yan ◽

Jing Lin ◽

Qing Hu ◽

Juhua Zhong ◽

...

Keyword(s):

Mass Transfer ◽

Saturated Calomel Electrode ◽

Co2 Reduction ◽

Active Surface ◽

Active Surface Area ◽

Mass Transfer Limitation ◽

Faradaic Efficiency ◽

Electrochemical Co2 Reduction ◽

Hydrophobic Layer ◽

Co2 Mass Transfer

Due to CO2 mass transfer limitation as well as the competition of hydrogen evolution reaction in electroreduction of CO2 in the aqueous electrolyte, Zn-based electrodes normally exhibit unsatisfying selectivity for CO production, especially at high potentials. In this work, we introduced a zinc myristate (Zn [CH3(CH2)12COO]2) hydrophobic layer on the surface of zinc foam electrode by an electrodeposition method. The obtained hydrophobic zinc foam electrode showed a high Faradaic efficiency (FE) of 91.8% for CO at −1.9 V (vs. saturated calomel electrode, SCE), which was a remarkable improvement over zinc foam (FECO = 81.87%) at the same potentials. The high roughness of the hydrophobic layer has greatly increased the active surface area and CO2 mass transfer performance by providing abundant gas-liquid-solid contacting area. This work shows adding a hydrophobic layer on the surface of the catalyst is an effective way to improve the electrochemical CO2 reduction performance.

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Electrochemical CO2 reduction to methane with remarkably high Faradaic efficiency in the presence of a proton permeable membrane

Energy & Environmental Science ◽

10.1039/d0ee02189j ◽

2020 ◽

Vol 13 (10) ◽

pp. 3567-3578 ◽

Cited By ~ 1

Author(s):

Hanqing Pan ◽

Christopher J. Barile

Keyword(s):

Co2 Reduction ◽

Permeable Membrane ◽

Faradaic Efficiency ◽

Electrochemical Co2 Reduction

Cu electrodes modified with a Nafion layer catalyze the reduction of CO2 to CH4 with up to 88% Faradaic efficiency.

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Electrochemical CO2 reduction with low overpotential by a poly(4-vinylpyridine) electrode for application to artificial photosynthesis

Faraday Discussions ◽

10.1039/c6fd00225k ◽

2017 ◽

Vol 198 ◽

pp. 409-418 ◽

Cited By ~ 4

Author(s):

Hohyun Jeong ◽

Myung Jong Kang ◽

Hyeyeong Jung ◽

Young Soo Kang

Keyword(s):

Charge Transfer ◽

Current Density ◽

Electrochemical Impedance ◽

Catalytic Properties ◽

Co2 Reduction ◽

Surface Concentration ◽

Reduction Reaction ◽

Pt Electrodes ◽

Electrochemical Co2 Reduction ◽

Low Overpotential

Pyridine molecules have been used as a catalyst to reduce the activation energy of the CO2 reduction reaction. It has been reported that CO2 is reduced by pyridine catalysts at low overpotential around −0.58 V vs. SCE. Poly(4-vinylpyridine), which has pyridine functional groups shows similar catalytic properties to reduce CO2 at low overpotential like pyridinium catalysts. Different thickness of P(4-VP) coated Pt electrodes were analyzed to determine the catalytic properties for CO2 reduction. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy methods showed the catalytic CO2 reduction properties of a P(4-VP)/Pt electrode. Thin P(4-VP)/Pt film showed a low current density of −0.16 mA cm−2 under CO2 atmosphere and the current density reached −0.45 mA cm−2 with increase of the P(4-VP) thickness. The increase of current density was explained by an increased surface concentration of adsorbed pyridinium groups of the thick P(4-VP) layer. Nyquist plots also showed decrease of impedance with increase of the P(4-VP) layer indicating fast charge transfer between Pt and the P(4-VP) layer due to the increase of hybrid ionic complex formation on the Pt surface. However, charge transfer is restricted when the P(4-VP) layer becomes more thick because of slowed protonation of pyridine groups adjacent to the Pt surface due to the suppressed permeability of electrolyte solution into the PVP membrane. This electrochemical observation provides a new aspect of P(4-VP) polymer for CO2 reduction.

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