Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance

Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance

Ammonia produced using renewable hydrogen is being viewed as a promising media for the export of energy from locations rich in renewable energy sources. Solid oxide fuel cells (SOFCs) are efficient devices for converting such exported ammonia back into electricity at the point of use; however, inves...

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Main Authors: Shambhu Singh Rathore, Aniruddha P. Kulkarni, Daniel Fini, Sarbjit Giddey, Aaron Seeber
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Solids
Subjects:
anode
ammonia
SOFC
energy conversion
energy storage
renewable energy
Online Access:https://www.mdpi.com/2673-6497/2/2/12
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spelling doaj-bd1e77983f824f49bdf397b58557ce952021-09-09T13:57:09ZengMDPI AGSolids2673-64972021-05-0121217719110.3390/solids2020012Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical PerformanceShambhu Singh Rathore0Aniruddha P. Kulkarni1Daniel Fini2Sarbjit Giddey3Aaron Seeber4CSIRO Energy, Private Bag 10, Clayton South, VIC 3169, AustraliaCSIRO Energy, Private Bag 10, Clayton South, VIC 3169, AustraliaCSIRO Energy, Private Bag 10, Clayton South, VIC 3169, AustraliaCSIRO Energy, Private Bag 10, Clayton South, VIC 3169, AustraliaCSIRO Manufacturing, Private Bag 31, Clayton South, VIC 3169, AustraliaAmmonia produced using renewable hydrogen is being viewed as a promising media for the export of energy from locations rich in renewable energy sources. Solid oxide fuel cells (SOFCs) are efficient devices for converting such exported ammonia back into electricity at the point of use; however, investigations on materials and operating regimes for direct ammonia fuelled SOFCs are limited. In this work, we evaluated the direct ammonia SOFC performance with a Silver-Lanthanum Strontium Cobalt Ferrite (Ag-LSCF) composite anode and a novel Palladium (Pd) nanoparticle decorated Silver-Lanthanum Strontium Cobalt Ferrite (Pd-Ag-LSCF) composite anode in the temperature range of 500 °C to 800 °C. It is hypothesised that palladium nanoparticles in the anode provide hydrogen dissolution and shift the ammonia decomposition reaction towards the right. The cell performance was evaluated with both hydrogen and ammonia as fuels and a clear-cut improvement in the performance was observed with the addition of Pd for both the fuels. The results showed performance enhancements of 20% and 43% with hydrogen and ammonia fuels, respectively, from the addition of Pd to the Ag-LSCF anode. Open-circuit voltage (OCV) values of the cells with hydrogen and ammonia fuels recorded over the temperature range of 500 °C to 800 °C indicated the possibility of direct electro-oxidation of ammonia in SOFCs.https://www.mdpi.com/2673-6497/2/2/12anodeammoniaSOFCenergy conversionenergy storagerenewable energy
collection DOAJ
language English
format Article
sources DOAJ
author Shambhu Singh Rathore
Aniruddha P. Kulkarni
Daniel Fini
Sarbjit Giddey
Aaron Seeber
spellingShingle Shambhu Singh Rathore
Aniruddha P. Kulkarni
Daniel Fini
Sarbjit Giddey
Aaron Seeber
Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
Solids
anode
ammonia
SOFC
energy conversion
energy storage
renewable energy
author_facet Shambhu Singh Rathore
Aniruddha P. Kulkarni
Daniel Fini
Sarbjit Giddey
Aaron Seeber
author_sort Shambhu Singh Rathore
title Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
title_short Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
title_full Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
title_fullStr Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
title_full_unstemmed Evaluation of ((La<sub>0.60</sub>Sr<sub>0.40</sub>)<sub>0.95</sub>Co<sub>0.20</sub>Fe<sub>0.80</sub>O<sub>3-x</sub>)-Ag Composite Anode for Direct Ammonia Solid Oxide Fuel Cells and Effect of Pd Impregnation on the Electrochemical Performance
title_sort evaluation of ((la<sub>0.60</sub>sr<sub>0.40</sub>)<sub>0.95</sub>co<sub>0.20</sub>fe<sub>0.80</sub>o<sub>3-x</sub>)-ag composite anode for direct ammonia solid oxide fuel cells and effect of pd impregnation on the electrochemical performance
publisher MDPI AG
series Solids
issn 2673-6497
publishDate 2021-05-01
description Ammonia produced using renewable hydrogen is being viewed as a promising media for the export of energy from locations rich in renewable energy sources. Solid oxide fuel cells (SOFCs) are efficient devices for converting such exported ammonia back into electricity at the point of use; however, investigations on materials and operating regimes for direct ammonia fuelled SOFCs are limited. In this work, we evaluated the direct ammonia SOFC performance with a Silver-Lanthanum Strontium Cobalt Ferrite (Ag-LSCF) composite anode and a novel Palladium (Pd) nanoparticle decorated Silver-Lanthanum Strontium Cobalt Ferrite (Pd-Ag-LSCF) composite anode in the temperature range of 500 °C to 800 °C. It is hypothesised that palladium nanoparticles in the anode provide hydrogen dissolution and shift the ammonia decomposition reaction towards the right. The cell performance was evaluated with both hydrogen and ammonia as fuels and a clear-cut improvement in the performance was observed with the addition of Pd for both the fuels. The results showed performance enhancements of 20% and 43% with hydrogen and ammonia fuels, respectively, from the addition of Pd to the Ag-LSCF anode. Open-circuit voltage (OCV) values of the cells with hydrogen and ammonia fuels recorded over the temperature range of 500 °C to 800 °C indicated the possibility of direct electro-oxidation of ammonia in SOFCs.
topic anode
ammonia
SOFC
energy conversion
energy storage
renewable energy
url https://www.mdpi.com/2673-6497/2/2/12
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