期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 3, 期 3, 页码 368-371出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b005523i
关键词
-
The stability of bifunctional oxygen electrodes used in electrically rechargeable zinc/air batteries was investigated as a function of the CO2 concentration in the feed gas. Using pure oxygen as feed gas, the oxygen evolving electrode was life limiting being stable up to 2500 h. However, by increasing the CO2-concentration in synthetic air up to 10000 ppm, the life limiting electrode is changed to the oxygen reducing electrode and the lifetime is reduced due to poisoning by carbonate precipitation inside the pores of the gas diffusion electrode. Furthermore, the CO2 filtering efficiency of several alkaline filter materials has been tested. It has been found that the filter capacity was strongly dependent on the humidity ratio of the feed gas. 9.2 g of LiOH-Ca(OH)(2) mixture were able to filter 2500 l ambient air (90% RH, 409 ppm CO2) with a rest concentration of less than 20 ppm.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据