Screening of electrode materials and cell concepts for composite ceria plus salt electrolytes

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abstract

The optimization of the performance of electrodes (oxide-based) for composite electrolytes (Ce0.9Gd0.1O1.95 + (Li0.52Na0.48)(2)CO3) is addressed in this work acting mostly on the electrode chemical nature (eg, LaCoO3, Li0.43NiO2, or LiNiO2), thickness (single and multiple screen-printed layers), and cell layer concept (with/without barrier layers between electrode and electrolyte). The cell performance and stability were analyzed by electrochemical impedance spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. LaCoO3 electrodes deposited on the electrolyte using an intermediate barrier layer showed a promising area specific resistance of 0.22 Omega.cm(2) at 600 degrees C. This optimized cell processing route was adopted as reference to study the endurance performance of distinct electrode materials up to 100 hours in air, at 550 degrees C, where lithiated NiO showed the best stability.

keywords

OXIDE FUEL-CELLS; MOLTEN-CARBONATE; ELECTRICAL-CONDUCTIVITY; CATHODE; STABILITY; NIO; POLARIZATION; PERFORMANCE; IMPROVEMENT; SOLUBILITY

subject category

Energy & Fuels; Nuclear Science & Technology

authors

Jamale, AP; Marques, FMB

our authors

foto Atul Prabhakar Jamale

Atul Prabhakar Jamale

Junior Researcher
foto Fernando Manuel Bico Marques

Fernando Manuel Bico Marques

Full professor

Groups

G3 - Electrochemical Materials, Interfaces and Coatings

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

Zero CO2 emissions: challenge and foresight for innovative multi-ionic functional membranes (CO2zero)

Multi-Functional Nanocomposite Materials For Low-Temperature Ceramic Fuel Cells (NANOMFC )

acknowledgements

FEDER; FCT/MEC (PIDDAC), Grant/Award Numbers: FCT UID/CTM/50011/2013, M-ERA.NET2 2016-MOCO3-0009/2016 POCI-01-0145-FEDER-016654-PTDC/CTM-CER/6732/2014 and New-INDIGO/0001/2013

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Publication Details

type
Journal Article
year
2018
journal
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
volume
42
publisher
WILEY
issn
0363-907X
issue
15
digital object identifier
10.1002/er.4236
web of science article identifier
WOS:000449519500023

Journal Metrics (JCR 2019)

Journal Impact Factor
3.741
Journal Impact Factor (5 yrs)
3.539
category normalized journal percentile
78.952

Citations

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