Octane Steam Reforming and Electrochemical Reaction on Cu-GDC Cermet Anode of Internal Reforming Solid Oxide Fuel Cell. (2nd June 2015)

• Record Type: Journal Article
• Authors: Tomomichi, Keita; Kinoshita, Masahiro; Yamagami, Shun; Yamada, Yuki; Terai, Takayuki; Sasaki, Kazuya
• Is Part Of: ECS transactions. Volume 68:Number 1(2015)
• Page Start: 2819
• Page End: 2829
• Publication Date: 2015-06-02
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06801.2819ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : 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 C2 H6 are generated in the reforming reaction of n-octane, and C3 H8, CH3 OH, and C4 H10 are also generated in addition to those in the reforming reaction of iso-octane. By using the n-octane fuel, the carbon deposition is reduced. The rate-determining process is dissociation to H2 and CO.