Octane steam reforming and electrochemical reaction on Cu-GDC cermet anode of internal reforming solid oxide fuel cell
Octane steam reforming and electrochemical reaction on Cu-GDC cermet anode of internal reforming solid oxide fuel cell
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内重整固体氧化物燃料电池Cu-GDC金属陶瓷阳极辛烷蒸汽重整及电化学反应
DOI：
10.1149/06801.2819ecst
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and Kazuya Sasaki
中科院分区：
文献类型：
--
作者：
1.Keita Tomomichi;Masahiro Kinoshita;Shun Yamagami;Yuki Yamada;Takayuki Terai;and Kazuya Sasaki
Cu和氧化钆掺杂二氧化铈（Cu-GDC）的多孔金属陶瓷分别具有优异的耐硫性和氧离子供给性能，被关注作为辛烷直接使用的SOFC的阳极电极。研究了操作条件、蒸汽/碳比和电池温度对Cu-GDC金属陶瓷阳极上的蒸汽内部重整反应和电化学反应的影响。为了了解碳链支化差异的影响，使用了正辛烷（直链烷烃）和异辛烷（支链烷烃）。通过提高S/C比，积碳减少，但OCV波动范围增大。正辛烷重整反应主要生成H2、CO、CO2、CH4、C2H6，异辛烷重整反应除生成C3H8、CH3OH、C4H10外，还生成C3H8、CH3OH、C4H10。通过使用正辛烷燃料，可以减少碳沉积。速率决定过程是解离为 H2 和 CO。
A porous cermet of Cu and gadolinium oxide-doped ceria (Cu-GDC), which, respectively, have excellent sulfur tolerance and oxygen ion supply property, was focused as an anode electrode for the octane-direct use SOFC. Influences of operating conditions, steam/carbon ratio and cell temperature on the steam internal reforming reaction and electrochemical reaction on the Cu-GDC cermet anode electrode were investigated. In order to understand the influence of difference in branching of carbon chain, n-octane (linear alkane) and iso-octane (branched chain alkane) were used. By raising the S/C ratio, the carbon deposition is decreased but the fluctuation range of the OCV is increased. Mainly H2, CO, CO2, CH4, and C2H6 are generated in the reforming reaction of n-octane, and C3H8, CH3OH, and C4H10 are also generated in addition to those in the reforming reaction of iso-octane. By using the noctane fuel, the carbon deposition is reduced. The rate-determining process is dissociation to H2 and CO.