Silver-coated ion exchange membrane electrode applied to electrochemical reduction of carbon dioxide

Hori, Yasuhiko; Ito, Hiroki; Okano, Kaori; Nagasu, K; Sato, S.

doi:10.1016/s0013-4686(03)00311-6

Cited by 102 publications

(93 citation statements)

References 19 publications

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“…The FE of the two data sets is comparable at similar run times for both systems. A second similar system for comparison was reported by Hori et al where Ag was deposited on either a cation or anion exchange membrane [21]. For the anion exchange membrane at the lower j shows lower E c values and similar FE for the generation of CO, while at the higher j the E c values are above this report but have greater FE for CO generation.…”

Section: Effect Of Current Densitysupporting

confidence: 66%

Bench-scale electrochemical system for generation of CO and syn-gas

2011

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A flow cell based, bench-scale electrochemical system for generation of synthesis-gas (syn-gas) is reported. Sensitivity to operating conditions such as CO 2 flow, current density, and elevated temperature are described. By increasing the temperature of the cell the kinetic overpotential for the reduction of CO 2 was lowered with the cathode voltage at 70 mA cm -2 decreased by 0.32 V and the overall cell voltage dropping by 1.57 V. This equates to an 18% increase in cell efficiency. By closely monitoring the products it was found that at room temperature and 70°C the primary products are CO and H 2 . By controlling the current density and the flow of CO 2 it was possible to control the H 2 :CO product ratio between 1:4 and 9:1. The reproducibility of performing experiments at elevated temperature and the ability to generate syn-gas for extended periods of time is also discussed.

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Section: Effect Of Current Densitysupporting

confidence: 66%

Bench-scale electrochemical system for generation of CO and syn-gas

2011

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“…This reaction product distribution is very sensitive to various parameters such as applied potential, buffer strength and local pH, local CO 2 concentration, CO 2 pressure and the surface crystal structure of the electrode [5,8,[14][15][16][17][18][19][20][21][22][23][24]. Elsewhere, on several transition metal electrodes (Ni, Pd, Pt…) carbon monoxide was mainly formed [25][26][27][28][29][30][31]. Recently, there have been many extensive studies on the electro-reduction of CO 2 in different (protic or aprotic) solvents in which the solubility of the reactant varied.…”

Section: Introductionmentioning

confidence: 99%

Electro-reduction of carbon dioxide to formate on lead electrode in aqueous medium

et al. 2008

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The electrochemical reduction of carbon dioxide on a lead electrode was studied in aqueous medium. Preliminary investigations carried out by cyclic voltammetry were used to determine the optimized conditions of electrolysis. They revealed that the CO 2 reduction process was enhanced at a pH value of 8.6 for the cathodic solution i.e. when the predominant form of CO 2 was hydrogenocarbonate ion. Long-term electrolysis was carried out using both potentiometry and amperometry methods in a filterpress cell in which the two compartments were separated by a cation-exchange membrane (Nafion Ò 423). Formate was detected and quantified by chromatography as the exclusive organic compound produced with a high Faradaic yield (from 65% to 90%). This study also revealed that the operating temperature played a key role in the hydrogenation reaction of carbon dioxide into formate in aqueous medium.

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“…Electrochemistry Communications 50 (2015) 64-68 1. Within the first "liquid-liquid" (L-L) type, CO 2 gas is absorbed into the aqueous [4] or non-aqueous [5] electrolyte in the cathodic compartment and a liquid electrolyte, such as KHCO 3 [6] and KOH [7], is applied in the anodic chamber. Carbon monoxide, hydrocarbons, alcohols, acids and aldehydes were reported to be the major valuable products of this type of reactor [8,9].…”

Section: At Cathodementioning

confidence: 99%