manuscript_JSK_04Sep_Reviewed.pdf (1.88 MB)
Semiconductor-ionic membrane of LaSrCoFe-oxide-doped ceria solid oxide fuel cells
journal contribution
posted on 2017-08-25, 12:15 authored by Baoyuan Wang, Yixiao Cai, Chen Xia, Jung-Sik Kim, Yanyan Liu, Wenjing Dong, Hao Wang, Muhammad Afzal, Junjiao Li, Rizwan Raza, Bin ZhuA novel semiconductor-ionic La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF)-Sm/Ca co-doped CeO 2 (SCDC) nanocomposite has been developed as a membrane, which is sandwiched between two layers of Ni 0.8 Co 0.15 Al 0.05 Li-oxide (NCAL) to construct semiconductor-ion membrane fuel cell (SIMFC). Such a device presented an open circuit voltage (OCV) above 1.0 V and maximum power density of 814 mW cm −2 at 550 °C, which is much higher than 0.84 V and 300 mW cm −2 for the fuel cell using the SCDC membrane. Moreover, the SIMFC has a relatively promising long-term stability, the voltage can maintain at 0.966 V for 60 hours without degradation during the fuel cells operation and the open-circuit voltage (OCV) can return to 1.06 V after long-term fuel cell operation. The introduction of LSCF electronic conductor into the membrane did not cause any short circuit but brought significant enhancement of fuel cell performances. The Schottky junction is proposed to prevent the internal electrons passing thus avoiding the device short circuiting problem.
Funding
Financial support are from the National Natural Science Foundation of China (Grant 51372075, 51502084), the Swedish Research Council (VR, Contract No. 621-2011-4983) and the EC FP7 TriSOFC project (Contract No. 303454). The joint technical development financed by Nanjing YuanNan Nano-Tech. Ltd is also acknowledged.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
Electrochimica ActaVolume
248Pages
496 - 504Citation
WANG, B. ... et al, 2017. Semiconductor-ionic membrane of LaSrCoFe-oxide-doped ceria solid oxide fuel cells. Electrochimica Acta, 248, pp. 496-504.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2017Notes
This paper was published in the journal Electrochimica Acta and the definitive published version is available at https://doi.org/10.1016/j.electacta.2017.07.128.ISSN
0013-4686Publisher version
Language
- en