Electrochemical Reduction of CO2 by a Gas-Diffusion Electrode Composed of fac-Re(diimine)(CO)3Cl and Carbon Nanotubes

2019 ◽  
Vol 123 (19) ◽  
pp. 12073-12080 ◽  
Author(s):  
Kei Murata ◽  
Hayato Tanaka ◽  
Kazuyuki Ishii
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Reduction ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Reduction Of Co2

scholarly journals Electrochemical Reduction of CO2to Organic Acids by a Pd-MWNTs Gas-Diffusion Electrode in Aqueous Medium

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Guang Lu ◽  
Hui Wang ◽  
Zhaoyong Bian ◽  
Xin Liu
Keyword(s):  
Carbon Nanotubes ◽  
Organic Acids ◽  
Electrochemical Reduction ◽  
Photoelectron Spectroscopy ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
High Catalytic Activity ◽  
Present System ◽  
Multiwalled Carbon ◽  
X Ray

Pd-multiwalled carbon nanotubes (Pd-MWNTs) catalysts for the conversion of CO2to organic acids were prepared by the ethylene glycol reduction and fully characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV) technologies. The amorphous Pd particles with an average size of 5.7 nm were highly dispersed on the surface of carbon nanotubes. Functional groups of the MWNTs played a key role in the palladium deposition. The results indicated that Pd-MWNTs could transform CO2into organic acid with high catalytic activity and CO2could take part in the reduction reaction directly. Additionally, the electrochemical reduction of CO2was investigated by a diaphragm electrolysis device, using a Pd-MWNTs gas-diffusion electrode as a cathode and a Ti/RuO2net as an anode. The main products in present system were formic acid and acetic acid identified by ion chromatograph. The selectivity of the products could be achieved by reaction conditions changing. The optimum faraday efficiencies of formic and acetic acids formed on the Pd-MWNTs gas-diffusion electrode at 4 V electrode voltages under 1 atm CO2were 34.5% and 52.3%, respectively.

scholarly journals Optimizing the use of a “Zero-Gap” Gas Diffusion Electrode Setup for Electrochemical Reduction of CO2

2021 ◽  
Author(s):  
Shima Alinejad ◽  
Jonathan Quinson ◽  
Yao Li ◽  
Ying Kong ◽  
Sven Reichenberger ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Reduction Reaction ◽  
Gas Diffusion Electrode ◽  
Test Bed ◽  
Catalyst Screening ◽  
Electrochemical Co2 Reduction ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

The lack of a robust and standardized experimental test bed to investigate the performance of catalyst materials for the electrochemical CO2 reduction reaction (ECO2RR) is one of the major challenges in this field of research. To best reproduce and mimic commercially relevant conditions for catalyst screening and testing, gas diffusion electrode (GDE) setups attract a rising attention as an alternative to conventional aqueous-based setups such as the H-cell configuration. In particular a zero-gap design shows promising features for upscaling to the commercial scale. In this study, we develop further our recently introduced zero-gap GDE setup for the CO2RR using an Au electrocatalyst as model system and identify/report the key experimental parameters to control in the catalyst layer preparation in order to optimize the activity and selectivity of the catalyst.

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