Theoretical understanding of the electrochemical reaction barrier: a kinetic study of CO2 reduction reaction on copper electrodes

2020 ◽  
Vol 22 (17) ◽  
pp. 9607-9615 ◽  
Author(s):  
Shu-Ting Gao ◽  
Shi-Qin Xiang ◽  
Jun-Lin Shi ◽  
Wei Zhang ◽  
Liu-Bin Zhao
Keyword(s):  
Renewable Energy ◽  
Kinetic Study ◽  
Electrochemical Reduction ◽  
Electrochemical Reaction ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Theoretical Understanding ◽  
Copper Electrodes ◽  
Chemical Products ◽  
Co2 Reduction Reaction

The electrochemical reduction of CO2 is a promising route for converting intermittent renewable energy into storable fuels and useful chemical products.

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

scholarly journals Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 604
Author(s):  
Sahithi Ananthaneni ◽  
Zachery Smith ◽  
Rees B. Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Density Functional ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) have been proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence, can be good substitutes for some important reduction reactions. In this work, we test graphene-supported WC (Tungsten Carbide) nanoclusters as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform density functional theory (DFT) studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products, such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and development of more efficient electrocatalysts for CO2 reduction.

scholarly journals Effect of the oxidation state and morphology of SnOx-based electrocatalysts on the CO2 reduction reaction

2021 ◽  
Author(s):  
Lara G. Puppin ◽  
Luís F. da Silva ◽  
Marcelo Carmo ◽  
Hamilton Varela ◽  
Osmando F. Lopes
Keyword(s):  
Particle Size ◽  
Renewable Energy ◽  
Carbon Cycle ◽  
Formic Acid ◽  
Oxidation State ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Reduction Step ◽  
Anthropogenic Carbon ◽  
Co2 Reduction Reaction

AbstractCO2 electrochemical reduction reaction (CO2RR) is an attractive strategy for closing the anthropogenic carbon cycle and storing intermittent renewable energy. Tin-based electrocatalysts exhibit remarkable properties for reducing CO2 into HCOOH. However, the effects of morphology and oxidation state of tin-based electrocatalysts on the performance of CO2 reduction have not been well-described. We evaluate the oxidation state and particle size of SnOx for CO2 reduction. SnOx was effective for converting CO2 into formic acid, reaching a maximum selectivity of 69%. The SnO exhibited high activity for CO2RR compared to SnO2 electrocatalysts. A pre-reduction step of a SnO2 electrocatalyst increased its CO2 reduction performance, confirming that Sn2+ is more active than Sn4+ sites. The microsized SnO2 is more effective for converting CO2 into formic acid than nanosized SnO2, likely due to the impurities of nanosized SnO2. We illuminated the role played by both SnOx particle size and oxidation state on CO2RR performance. Graphic abstract

Electropolymerized Metal-Protoporphyrin electrodes for Selective Electrochemical Reduction of CO2

2021 ◽  
Author(s):  
Nael Yasri ◽  
Tareq Al-Attas ◽  
Jinguang Hu ◽  
Md Golam Kibria
Keyword(s):  
Electrochemical Reduction ◽  
Aqueous Media ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Practical Implementation ◽  
Electrochemical Co2 Reduction ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

Developing catalysts that exhibit high efficiencies for the electrochemical CO2 reduction reaction (CO2RR) in aqueous media is vital in both aspects of the healthier environment and for the practical implementation...

An enhanced electrochemical CO2 reduction reaction on the SnOx–PdO surface of SnPd nanoparticles decorated on N-doped carbon fibers

2021 ◽  
Author(s):  
Sreekanth Narayanaru ◽  
Gopinathan M. Anilkumar ◽  
Masaki Ito ◽  
Takanori Tamaki ◽  
Takeo Yamaguchi
Keyword(s):  
Electrochemical Reduction ◽  
Carbon Fibers ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Electrochemical Co2 Reduction ◽  
Co2 Reduction Reaction

Electrochemical reduction of CO2 to formate on SnPd–NCF. The adsorbed bicarbonate ion promotes the protonation of CO2˙− to HCO2−.

Design of pre-catalysts for heterogeneous CO2 electrochemical reduction

2021 ◽  
Author(s):  
Jingfu He ◽  
Chenghui Wu ◽  
Yanming Li ◽  
Changli Li
Keyword(s):  
Climate Change ◽  
Electrochemical Reduction ◽  
Energy Supply ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Metal Catalysts ◽  
Global Challenge ◽  
Gold Silver ◽  
Copper Gold ◽  
Co2 Reduction Reaction

CO2 reduction reaction (CO2RR) is one of the most promising methods to alleviate the global challenge of climate change and energy supply. Metal catalysts such as copper, gold, silver, tin,...

Electrochemical reduction of carbon dioxide with nearly 100% carbon monoxide faradaic efficiency from vacancy-stabilized single-atom active sites

2021 ◽  
Author(s):  
Chenbao Lu ◽  
Kaiyue Jiang ◽  
Diana Tranca ◽  
Ning Wang ◽  
Hui Zhu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Energy Conversion ◽  
Electrochemical Reduction ◽  
Active Sites ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Single Atom ◽  
Faradaic Efficiency ◽  
Co2 Reduction Reaction

Single-atom catalysts (SACs) have been rapidly rising as emerging materials in the field of energy conversion, especially for CO2 reduction reaction. However, the selectivity and running current are still beyond...

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

Tuning of visible light-driven CO2 reduction and hydrogen evolution activity by using POSS-modified porous organometallic polymers

2021 ◽  
Author(s):  
Wei-Jia Wang ◽  
Kai-Hong Chen ◽  
Zhi-Wen Yang ◽  
Bo-Wen Peng ◽  
Liang-Nian He
Keyword(s):  
Renewable Energy ◽  
Hydrogen Evolution ◽  
Co2 Reduction ◽  
Energy Systems ◽  
Reduction Reaction ◽  
Organometallic Polymers ◽  
Renewable Energy Systems ◽  
Visible Light Driven ◽  
Significant Pathway ◽  
Co2 Reduction Reaction

Significant efforts have been devoted to photochemical CO2 reduction reaction (CO2RR) as a significant pathway for the development of renewable energy systems. However, competitive hydrogen evolution reaction (HER) greatly impedes...

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