当前位置: X-MOL 学术Solid State Ionics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning
Solid State Ionics ( IF 3.0 ) Pub Date : 2020-07-20 , DOI: 10.1016/j.ssi.2020.115410
C.M. Harrison , P.R. Slater , R. Steinberger-Wilckens

Solid Oxide Fuel Cell (SOFC) cathode materials have been shown to be susceptible to a ‘chromium poisoning’ phenomenon that can significantly deteriorate cell output during operation. Chromium-containing species, released from stack and system materials, migrate to the SOFC cathode where they are able to form new phases through reaction with the cathode material. Such phases have been shown to diminish the catalytic and conductive performance of the electrodes and even block the pathways through which oxygen must diffuse. To date, there has been a significant body of research afforded to this subject area. Efforts have been made towards understanding the chromium poisoning effect, whilst also considering how it may be mitigated. In this review, we discuss the effects of chromium-containing phases on both conventional and non-conventional cathode materials. This is in order to understand the most successful approaches towards developing chromium-tolerant cathode materials. The influences of environmental parameters such as temperature and humidity are also discussed. This is to explore how degradation rates may be affected by the operating conditions themselves and the extent to which the phenomenon can be mitigated by suitable control of such factors. In the most part, these environmental effects are studied in relation to the most common cathode materials, La1-xSrxCo1-yFeyO3 and La1-xSrxMnO3, where there has been the largest body of work conducted.



中文翻译:

固体氧化物燃料电池正极材料的抗铬中毒作用综述

固态氧化物燃料电池(SOFC)阴极材料已显示出易受“铬中毒”现象影响,这种现象会严重降低电池在运行期间的输出功率。从电池堆和系统材料中释放出的含铬物质迁移到SOFC阴极,在那里它们能够通过与阴极材料反应形成新的相。已经显示出这样的相降低了电极的催化和导电性能,甚至阻碍了氧气必须扩散的路径。迄今为止,已经对该领域进行了大量研究。在理解铬中毒作用的同时,还考虑了如何减轻铬中毒的努力。在这篇评论中 我们讨论了含铬相对常规和非常规阴极材料的影响。这是为了了解开发耐铬阴极材料的最成功方法。还讨论了环境参数(例如温度和湿度)的影响。这是为了探索降解速度如何受到操作条件本身的影响,以及通过适当控制这些因素可以减轻现象的程度。在大多数情况下,这些环境影响是与最常见的阴极材料La有关的 这是为了探索降解速度如何受到操作条件本身的影响,以及通过适当控制这些因素可以减轻现象的程度。在大多数情况下,这些环境影响是与最常见的阴极材料La有关的 这是为了探索降解速度如何受到操作条件本身的影响,以及通过适当控制这些因素可以减轻现象的程度。在大多数情况下,这些环境影响是与最常见的阴极材料La有关的1-x Sr x Co 1-y Fe y O 3和La 1-x Sr x MnO 3,其中进行的工作量最大。

更新日期:2020-07-20
down
wechat
bug