摘要
CO2电还原技术在降低"温室效应"、缓解能源危机及消除密闭环境的CO2等方面都有很重要的意义。本文利用电沉积的方法制备了用于电还原CO2的In及In-Sn电极,在三电极测试体系及电解槽中,对所制备的电极进行活性及稳定性测试。在常温常压和2000A.m-2的电流密度下,所制备的In和In-Sn电极(43cm2)电还原CO2生成HCOOH的速率分别达到0.585L.h-1,0.922L.h-1。在40h的电解测试中,两者皆具有较好的稳定性。In-Sn较In具有更高的CO2电还原活性,是一类更具应用前景的电极。
The technology of electrochemical reduction of CO2 is significant for reducing greenhouse effect,relieving energy crisis and eliminating CO2 in spacecraft or submarine. In this paper,In and In-Sn electrodes used in electrochemical reduction of CO2 have been prepared by electroplating method. In threeelectrode and cell testing systems,the activity and stability of In and In-Sn electrodes are tested. At normal temperature and pressure, when current density is 2000 A · m^-2, the velocities of In and In-Sn electrodes （43 cm^2） reducing CO2 are 0. 585 L · h^-1 and 0. 922 L · h^-1. In and In-Sn electrodes both have good stability during 40 hours electrolysis testing. The results show that,In-Sn electrode has higher activity and better prospect of application in electrochemical reduction of CO2.
出处
《舰船科学技术》
2009年第7期108-111,共4页
Ship Science and Technology
关键词
CO2
电还原
铟
铟-锡
电极
carbon dioxide
electrochemical reduction
In
In-Sn
electrode
