Electrochemical CO2 Reduction on a Copper Wire Electrode in Tetraethylammonium Perchlorate Methanol at Extremely Low Temperature
作者:
Satoshi Kaneco, Kenji Iiba, Kiyohisa Ohta, Takayuki Mizuno,
期刊:
Energy Sources
(Taylor Available online 1999)
卷期:
Volume 21,
issue 7
页码: 643-648
ISSN:0090-8312
年代: 1999
DOI:10.1080/00908319950014588
出版商: Informa UK Ltd
关键词: Electrochemical Reductions;Carbon Dioxide;Copper Wire Electrode;Tetraethylammonium Perchlorate Methanol Electrolyte
数据来源: Taylor
摘要:
The electrochemical reduction of CO2 in tetraethylammonium perchlorate methanol electrolyte was investigated with a copper wire electrode at an extremely low temperature (-30 C). The main products from CO2 by the electrochemical reduction were methane, ethylene, carbon monoxide, and formic acid. Under the optimum experimental conditions, 28.1% faradaic efficiency methane, 7.2% ethylene, 67.8% carbon monoxide, and 23.2% formic acid were produced from CO2 by the electrochemical reduction. The maximum partial current densities for CO2 reduction and hydrocarbons were 4.5 and 1.6 mA cm-2 at 4.0 V vs SCE, respectively. At -30 C, the efficiency of hydrogen formation, being a competitive reaction against CO2 reduction, was suppressed to less than 10.1%.
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