Electrochemical CO2 reduction: water/catalyst interface versus polymer/catalyst interface

2021 ◽  
Author(s):  
Yixin Ouyang ◽  
Ye-hui Zhang ◽  
Peter Rice ◽  
Li Shi ◽  
Jinlan Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solution ◽  
Diffusion Coefficients ◽  
Co2 Reduction ◽  
Aqueous Electrolytes ◽  
Electrolytic Cells ◽  
Electrochemical Co2 Reduction ◽  
Polymer Catalyst ◽  
And Diffusion ◽  
Low Solubility

Due to the low solubility and diffusion coefficients of carbon dioxide in aqueous solution, the carbon dioxide electrolytic cells with aqueous electrolytes are difficult to achieve high conversion current density....

scholarly journals Mitigating Mass Transport Limitations: Hierarchical Nanoporous Gold Flow-Through Electrodes for Electrochemical CO2 Reduction

2021 ◽  
Author(s):  
Zhen Qi ◽  
Steven A Hawks ◽  
Corie Horwood ◽  
Jürgen Biener ◽  
Monika M. Biener
Keyword(s):  
Mass Transport ◽  
Diffusion Rate ◽  
Co2 Reduction ◽  
Reaction Rates ◽  
Nanoporous Gold ◽  
Aqueous Electrolytes ◽  
Low Concentration ◽  
Electrochemical Co2 Reduction ◽  
Flow Through ◽  
And Diffusion

The reaction rates for electrochemical CO2 reduction in aqueous electrolytes can be limited by the low concentration and diffusion rate of the reactant CO2. To overcome this limitation, we fabricated...

An overview of flow cell architectures design and optimization for electrochemical CO2 reduction

2021 ◽  
Author(s):  
Dui Ma ◽  
Ting Jin ◽  
Keyu Xie ◽  
Haitao Huang
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Electrochemical Reduction ◽  
Atmospheric Carbon Dioxide ◽  
Co2 Reduction ◽  
Value Added ◽  
Flow Cell ◽  
Design And Optimization ◽  
Electrochemical Co2 Reduction ◽  
Carbon Dioxide Levels

Converting CO2 into value-added fuels or chemical feedstocks through electrochemical reduction is one of the several promising avenues to reduce atmospheric carbon dioxide levels and alleviate global warming. This approach...

Electrochemical CO2 Reduction to Hydrocarbons on a Heterogeneous Molecular Cu Catalyst in Aqueous Solution

2016 ◽  
Vol 138 (26) ◽  
pp. 8076-8079 ◽  
Author(s):  
Zhe Weng ◽  
Jianbing Jiang ◽  
Yueshen Wu ◽  
Zishan Wu ◽  
Xiaoting Guo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Co2 Reduction ◽  
Electrochemical Co2 Reduction ◽  
Cu Catalyst

scholarly journals Positional effects of second-sphere amide pendants on electrochemical CO2 reduction catalyzed by iron porphyrins

2018 ◽  
Vol 9 (11) ◽  
pp. 2952-2960 ◽  
Author(s):  
Eva M. Nichols ◽  
Jeffrey S. Derrick ◽  
Sepand K. Nistanaki ◽  
Peter T. Smith ◽  
Christopher J. Chang
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Electrochemical Reduction ◽  
Energy Input ◽  
Sustainable Energy ◽  
Co2 Reduction ◽  
Value Added ◽  
Iron Porphyrins ◽  
Electrochemical Co2 Reduction ◽  
Positional Effects

The development of catalysts for electrochemical reduction of carbon dioxide offers an attractive approach to transforming this greenhouse gas into value-added carbon products with sustainable energy input.

Industrial Approach for Direct Electrochemical CO2 Reduction in Aqueous Electrolytes

2019 ◽  
pp. 224-250
Author(s):  
Maximilian Fleischer ◽  
P. Jeanty ◽  
K. Wiesner-Fleischer ◽  
O. Hinrichsen
Keyword(s):  
Co2 Reduction ◽  
Aqueous Electrolytes ◽  
Electrochemical Co2 Reduction

Solubilities and diffusion coefficients of carbon dioxide in poly(vinyl acetate) and polystyrene

2001 ◽  
Vol 19 (2) ◽  
pp. 187-198 ◽  
Author(s):  
Yoshiyuki Sato ◽  
Tadao Takikawa ◽  
Shigeki Takishima ◽  
Hirokatsu Masuoka
Keyword(s):  
Carbon Dioxide ◽  
Vinyl Acetate ◽  
Diffusion Coefficients ◽  
And Diffusion

scholarly journals From Electricity to Fuels: Descriptors for C1 Selectivity in Electrochemical CO2 Reduction

2019 ◽  
Author(s):  
Michael Tang ◽  
Hongjie Peng ◽  
Philomena Schlexer Lamoureux ◽  
Michal Bajdich ◽  
Frank Abild-Pedersen
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Co2 Reduction ◽  
Reaction Network ◽  
Binding Energies ◽  
Complex Reaction ◽  
Applied Potential ◽  
Electrochemical Co2 Reduction ◽  
Reduced Products ◽  
Combine Evidence

Electrochemical reduction of carbon dioxide (CO<sub>2</sub>) over transition metals follows a complex reaction network. Even for products with a single carbon atom (C<sub>1</sub> products), two bifurcated pathways exist: initially between carboxyl (COOH*) and formate (HCOO*) intermediates and the COOH* intermediate is further bifurcated by pathways involving either formyl (CHO*) or COH*. In this study, we combine evidence from the experimental literature with a theoretical analysis of energetics to rationalize that not all steps in the reduction of CO<sub>2</sub> are electrochemical. This insight enables us to create a selectivity map for two-electron products (carbon monoxide (CO) and formate) on elemental metal surfaces using only the CO and OH binding energies as descriptors. In the further reduction of CO<sup>*</sup>, we find that CHO* is formed through a chemical step only whereas COH* follows from an electrochemical step. Notably on Cu(100), the COH pathway becomes dominant at an applied potential lower than −0.5V vs. RHE. For the elemental metals selective towards CO formation, the variation of the CO binding energy is sufficient to further subdivide the map into domains that predominantly form H<sub>2</sub>, CO, and ultimately more reduced products. We find Cu to be the only elemental metal capable of reducing CO<sub>2</sub> to products beyond 2e<sup>− </sup>via the proposed COH pathway and we identify atomic carbon as the key component leading to the production of methane. Our analysis also rationalizes experimentally observed differences in products between thermal and electrochemical reduction of CO<sub>2</sub> on Cu.

scholarly journals The Sensitivity of Cu for Electrochemical Carbon Dioxide Reduction to Hydrocarbons as Revealed by High Throughput Experiments

2019 ◽  
Author(s):  
Yunchieh Lai ◽  
Ryan J. R. Jones ◽  
Yu Wang ◽  
Lan Zhou ◽  
Matthias Richter ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Throughput ◽  
Co2 Reduction ◽  
Carbon Dioxide Reduction ◽  
Energy Technologies ◽  
Electrochemical Co2 Reduction ◽  
Segregation Of Alloying Elements ◽  
Hydrocarbon Formation ◽  
High Throughput Experiments ◽  
Alloy Concentration

Electrochemical CO2 reduction to valuable products is a centerpiece of future energy technologies that relies on identificaiton of new catalysts. We present accelerated screening of Cu bimetallic alloys, revealing remarkable sensitivity to alloy concentration that indicates the segregation of alloying elements to critical sites for hydrocarbon formation.

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