ELECTROCHEMICAL MASS REDUCTION OF CARBON-DIOXIDE USING CU-LOADED GAS-DIFFUSION ELECTRODES .1. PREPARATION OF ELECTRODE AND REDUCTION PRODUCTS

被引：15

作者：

IKEDA, S ^{[1
]}

ITO, T ^{[1
]}

AZUMA, K ^{[1
]}

ITO, K ^{[1
]}

NODA, H ^{[1
]}

机构：

[1] CHUBU ELECT POWER CO INC,MIDORI KU,NAGOYA,AICHI 459,JAPAN

来源：

DENKI KAGAKU | 1995年 / 63卷 / 04期

关键词：

CARBON DIOXIDE; GAS DIFFUSION ELECTRODE; ELECTROREDUCTION; COPPER;

D O I：

10.5796/kogyobutsurikagaku.63.303

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical reduction of CO2 has been carried out using copper powder-loaded gas diffusion electrodes in aqueous K2SO4 solution. The reduction products were CH4, C2H4, C2H5OH, CO, HCOO-, etc. These are almost the same ones as those obtained on a Cu plate electrode, and depend on the electrode potential. The structure and composition of the gas diffusion electrode affect the faradaic efficiency and current density of the CO2 reduction. The purer and the smaller particle size of the Cu powder, the electrode shows the higher activity for CO2 reduction and the higher efficiency for formation of CO and hydrocarbons. The electroreduction of CO2 can be carried out at about two orders of magnitude greater current density using a gas diffusion electrode prepared under the optimum condition than that using a plate Cu electrode.

引用

页码：303 / 309

页数：7

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