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Flowerlike CeO2 microspheres coated with Sr2Fe1.5Mo0.5Ox nanoparticles for an advanced fuel cell.

Liu Y, Tang Y, Ma Z, Singh M, He Y, Dong W, Sun C, Zhu B - Sci Rep (2015)

Bottom Line: Advanced single layer fuel cell was constructed using the flowerlike CeO2/Sr-Fe-Mo-oxide layer attached to a Ni-foam layer coated with the conducting transition metal oxide.Such fuel cell has yielded a peak power density of 802 mWcm(-2) at 550 °C.These results provide a promising strategy for developing advanced low-temperature SOFCs.

View Article: PubMed Central - PubMed

Affiliation: 1] Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062 [2] Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, 438 Hebei Street, Qinhuangdao, 066004, P.R. China.

ABSTRACT
Flowerlike CeO2 coated with Sr2Fe1.5Mo0.5Ox (Sr-Fe-Mo-oxide) nanoparticles exhibits enhanced conductivity at low temperatures (300-600 °C), e.g. 0.12 S cm(-1) at 600 °C, this is comparable to pure ceria (0.1 S cm(-1) at 800 °C). Advanced single layer fuel cell was constructed using the flowerlike CeO2/Sr-Fe-Mo-oxide layer attached to a Ni-foam layer coated with the conducting transition metal oxide. Such fuel cell has yielded a peak power density of 802 mWcm(-2) at 550 °C. The mechanism of enhanced conductivity and cell performance were analyzed. These results provide a promising strategy for developing advanced low-temperature SOFCs.

No MeSH data available.


SEM micrographs of cross-sectional images ofa) fuel cell configuration; b) F-CeO2/Sr-Fe-Mo-oxidelayer; c) Ni foam pasted NCAL in cathode side; d) Ni foampasted NCAL in anode side after stability test.
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f7: SEM micrographs of cross-sectional images ofa) fuel cell configuration; b) F-CeO2/Sr-Fe-Mo-oxidelayer; c) Ni foam pasted NCAL in cathode side; d) Ni foampasted NCAL in anode side after stability test.

Mentions: Figure 7 exhibits the SEM micrographs of the devicecross-sectional images for details after long-term stability test. As shown inFig. 7a, the F-CeO2/Sr-Fe-Mo-oxide singlelayer is 0.6 mm approximately. The thickness of Ni-foam pasted NCAL layer incathode side and anode side is 179 and 66 μm,respectively. Fig. 7b,c and d are the enlargement for thearea 1, 2 and 3 in Fig. 7a. It can be seen that theflowerlike texture of ceria has been destroyed in high temperature and long-termtest. However, the initial flowerlike structure results in hierarchical flakes,which induces the Sr-Fe-Mo-oxide homogenously coated on the special flowerlikemorphology and microstructure. This may benefit greatly theF-CeO2/Sr-Fe-Mo for high performance LT-SOFCs. The composition of thethree regions analyzed by EDX are displayed in Table 1.It can be seen that oxygen content significantly reduced due to the reduction ofNCAL-oxide in reducing atmosphere. As shown in Fig. 7c,d,the integration of NCAL and Ni foam layer in cathode and anode sides cancontribute to the current collection. Simultaneously, the Ni-foam porousstructure provides the tunnels for gas transfer to reach at theF-CeO2/Sr-Fe-Mo-oxide layer.


Flowerlike CeO2 microspheres coated with Sr2Fe1.5Mo0.5Ox nanoparticles for an advanced fuel cell.

Liu Y, Tang Y, Ma Z, Singh M, He Y, Dong W, Sun C, Zhu B - Sci Rep (2015)

SEM micrographs of cross-sectional images ofa) fuel cell configuration; b) F-CeO2/Sr-Fe-Mo-oxidelayer; c) Ni foam pasted NCAL in cathode side; d) Ni foampasted NCAL in anode side after stability test.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4495617&req=5

f7: SEM micrographs of cross-sectional images ofa) fuel cell configuration; b) F-CeO2/Sr-Fe-Mo-oxidelayer; c) Ni foam pasted NCAL in cathode side; d) Ni foampasted NCAL in anode side after stability test.
Mentions: Figure 7 exhibits the SEM micrographs of the devicecross-sectional images for details after long-term stability test. As shown inFig. 7a, the F-CeO2/Sr-Fe-Mo-oxide singlelayer is 0.6 mm approximately. The thickness of Ni-foam pasted NCAL layer incathode side and anode side is 179 and 66 μm,respectively. Fig. 7b,c and d are the enlargement for thearea 1, 2 and 3 in Fig. 7a. It can be seen that theflowerlike texture of ceria has been destroyed in high temperature and long-termtest. However, the initial flowerlike structure results in hierarchical flakes,which induces the Sr-Fe-Mo-oxide homogenously coated on the special flowerlikemorphology and microstructure. This may benefit greatly theF-CeO2/Sr-Fe-Mo for high performance LT-SOFCs. The composition of thethree regions analyzed by EDX are displayed in Table 1.It can be seen that oxygen content significantly reduced due to the reduction ofNCAL-oxide in reducing atmosphere. As shown in Fig. 7c,d,the integration of NCAL and Ni foam layer in cathode and anode sides cancontribute to the current collection. Simultaneously, the Ni-foam porousstructure provides the tunnels for gas transfer to reach at theF-CeO2/Sr-Fe-Mo-oxide layer.

Bottom Line: Advanced single layer fuel cell was constructed using the flowerlike CeO2/Sr-Fe-Mo-oxide layer attached to a Ni-foam layer coated with the conducting transition metal oxide.Such fuel cell has yielded a peak power density of 802 mWcm(-2) at 550 °C.These results provide a promising strategy for developing advanced low-temperature SOFCs.

View Article: PubMed Central - PubMed

Affiliation: 1] Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062 [2] Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, 438 Hebei Street, Qinhuangdao, 066004, P.R. China.

ABSTRACT
Flowerlike CeO2 coated with Sr2Fe1.5Mo0.5Ox (Sr-Fe-Mo-oxide) nanoparticles exhibits enhanced conductivity at low temperatures (300-600 °C), e.g. 0.12 S cm(-1) at 600 °C, this is comparable to pure ceria (0.1 S cm(-1) at 800 °C). Advanced single layer fuel cell was constructed using the flowerlike CeO2/Sr-Fe-Mo-oxide layer attached to a Ni-foam layer coated with the conducting transition metal oxide. Such fuel cell has yielded a peak power density of 802 mWcm(-2) at 550 °C. The mechanism of enhanced conductivity and cell performance were analyzed. These results provide a promising strategy for developing advanced low-temperature SOFCs.

No MeSH data available.