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2 results on '"Mixed conductor composite"'

1. Industrial-grade rare-earth and perovskite oxide for high-performance electrolyte layer-free fuel cell.

Author

Xia, Chen, Wang, Baoyuan, Ma, Ying, Cai, Yixiao, Afzal, Muhammad, Liu, Yanyan, He, Yunjuan, Zhang, Wei, Dong, Wenjing, Li, Junjiao, and Zhu, Bin

Subjects
*RARE earth metal compounds, *FUEL cells, *ELECTRIC batteries, *ELECTROLYTES, *ELECTRICAL conductors
Abstract

In the present work, we report a composite of industrial-grade material LaCePr-oxide (LCP) and perovskite La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ (LSCF) for advanced electrolyte layer-free fuel cells (EFFCs). The microstructure, morphology, and electrical properties of the LCP, LSCF, and LCP-LSCF composite were investigated and characterized by XRD, SEM, EDS, TEM, and EIS. Various ratios of LCP to LSCF in the composite were modulated to achieve balanced ionic and electronic conductivities. Fuel cell with an optimum ratio of 60 wt% LCP to 40 wt% LSCF reached the highest open circuit voltage (OCV) at 1.01 V and a maximum power density of 745 mW cm −2 at 575 °C, also displaying a good performance stability. The high performance is attributed to the interfacial mechanisms and electrode catalytic effects. The findings from the present study promote industrial-grade rare-earth oxide as a promising new material for innovative low temperature solid oxide fuel cell (LTSOFC) technology. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Industrial-grade rare-earth and perovskite oxide for high-performance electrolyte layer-free fuel cell

Author

Yunjuan He, Wenjing Dong, Yixiao Cai, Muhammad Afzal, Baoyuan Wang, Bin Zhu, Wei Zhang, Junjiao Li, Yanyan Liu, Ying Ma, and Chen Xia

Subjects
LaCePr-oxide (LCP), Materials science, Composite number, Oxide, Energy Engineering and Power Technology, 02 engineering and technology, Electrolyte, 010402 general chemistry, Physical Chemistry, 7. Clean energy, 01 natural sciences, chemistry.chemical_compound, La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), Teknik och teknologier, Electrolyte layer-free fuel cell, Industrial-grade material, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, ta218, Perovskite (structure), Fysikalisk kemi, ta114, Renewable Energy, Sustainability and the Environment, Open-circuit voltage, 021001 nanoscience & nanotechnology, Microstructure, 0104 chemical sciences, LaSrCoFeO (LSCF), Mixed conductor composite, Chemical engineering, chemistry, Electrode, Engineering and Technology, Solid oxide fuel cell, 0210 nano-technology
Abstract

In the present work, we report a composite of industrial-grade material LaCePr-oxide (LCP) and perovskite La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ (LSCF) for advanced electrolyte layer-free fuel cells (EFFCs). The microstructure, morphology, and electrical properties of the LCP, LSCF, and LCP-LSCF composite were investigated and characterized by XRD, SEM, EDS, TEM, and EIS. Various ratios of LCP to LSCF in the composite were modulated to achieve balanced ionic and electronic conductivities. Fuel cell with an optimum ratio of 60 wt% LCP to 40 wt% LSCF reached the highest open circuit voltage (OCV) at 1.01 V and a maximum power density of 745 mW cm −2 at 575 °C, also displaying a good performance stability. The high performance is attributed to the interfacial mechanisms and electrode catalytic effects. The findings from the present study promote industrial-grade rare-earth oxide as a promising new material for innovative low temperature solid oxide fuel cell (LTSOFC) technology.

Published
2016

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