Development of proton conducting fuel cells using nickel metal support

Vafaeenezhad, Sajad; Sandhu, Navjot; Hanifi, Amir Reza; Etsell, Thomas H.; Sarkar, Partha

doi:10.1016/j.jpowsour.2019.226763

Cited by 18 publications

(18 citation statements)

References 53 publications

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“…Metal supported fuel cells do not have any ionic conductors in their metal support and show excellent performance. However, addition of small amounts of YSZ to a predominantly Ni support can suppress Ni coarsening and reduces crack formation during anode reduction [28].…”

Section: Microstructural Features Which Impact the Electrochemical Pe...mentioning

confidence: 99%

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

et al. 2022

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Nickel-yttria stabilized zirconia (Ni-YSZ) cermet is the most commonly used anode in solid oxide fuel cells (SOFCs). The current article provides an insight into parameters which affect cell performance and stability by reviewing and discussing the related publications in this field. Understanding the parameters which affect the microstructure of Ni-YSZ such as grain size and ratio of Ni to YSZ, volume fraction of porosity, pore size and its distribution, tortuosity factor, characteristic pathway diameter and density of triple phase boundaries (TPBs) is the key to design a fuel cell which shows high electrochemical performance. Lack of stability has been the main barrier to commercialization of SOFC technology. Parameters influencing the degradation of Ni-YSZ supported SOFCs such as Ni migration inside the anode during prolonged operation are discussed. The longest Ni-supported SOFC tests reported so far are examined and the crucial role of chromium poisoning due to interconnects (ICs), stack design and operating conditions in degradation of SOFCs is highlighted. The importance of calcination and milling of YSZ on development of porous structures suitable for Ni infiltration is explained and several methods to improve the electrochemical performance and stability of Ni-YSZ anode supported SOFCs are suggested.

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Section: Microstructural Features Which Impact the Electrochemical Pe...mentioning

confidence: 99%

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

et al. 2022

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“… 12 − 14 The highest power loss in a μSOFC is typically due to the oxygen reduction reaction (ORR) overpotential at the cathode, and there are therefore many reports of state-of-the-art epitaxial cathode thin films. 6 , 12 , 15 , 16 Primarily, μSOFCs have been fabricated on Si, but research has also focused on μSOFC fabrication on metal substrates to enable fast start-up times and superior mechanical stability and cyclability, 2 , 17 , 18 as discussed later.…”

Section: Introductionmentioning

confidence: 99%

“…Metal substrates also provide mechanical strength, high electrical conductivity, and good thermal conduction, enabling quick start-up times. 2 , 17 , 18 However, metal substrates tend to preclude the use of advanced, epitaxially grown, electrolyte and cathode materials. To our knowledge, no reports describe the growth of epitaxial electrolytes and cathodes on metal substrates.…”

Section: Introductionmentioning

confidence: 99%

“…A possible strategy for achieving low ASRs at <500 °C, while maintaining good in-plane electrical conductivity for current collection and compatibility with thin-film technology, is the use of textured or epitaxial thin-film cathodes and electrolytes of low thickness . Particularly, textured or epitaxial layers offer the advantage of a well-controlled geometry and microstructure, whether for the electrolyte, cathode, or both. − The highest power loss in a μSOFC is typically due to the oxygen reduction reaction (ORR) overpotential at the cathode, and there are therefore many reports of state-of-the-art epitaxial cathode thin films. ,,, Primarily, μSOFCs have been fabricated on Si, but research has also focused on μSOFC fabrication on metal substrates to enable fast start-up times and superior mechanical stability and cyclability, ,, as discussed later.…”

Section: Introductionmentioning

confidence: 99%

“…Fabricating μSOFCs on low-cost and flexible metal substrates such as Ni or stainless steel, with thermal expansion coefficients closely matching YSZ, overcomes the issues related to the use of unstable thin-film metals in Si, as well as the very different thermal expansions between the substrate and the electrolyte layer. Metal substrates also provide mechanical strength, high electrical conductivity, and good thermal conduction, enabling quick start-up times. ,, However, metal substrates tend to preclude the use of advanced, epitaxially grown, electrolyte and cathode materials. To our knowledge, no reports describe the growth of epitaxial electrolytes and cathodes on metal substrates.…”

Section: Introductionmentioning

confidence: 99%

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Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates

Wells

Lovett

Chalklen

et al. 2021

ACS Appl. Mater. Interfaces

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Micro-solid oxide fuel cells based on thin films have strong potential for use in portable power devices. However, devices based on silicon substrate typically involves thin-film metallic electrodes which are unstable at high temperatures. Devices based on bulk metal substrates 2 overcome these limitations, though performance is hindered by the challenge of growing state-ofthe-art epitaxial materials on metals. Here, we demonstrate for the first time the growth of epitaxial cathode materials on metal substrates (stainless steel), commercially supplied with epitaxial electrolyte layers (1.5 m (Y 2 O 3 ) 0.15 (ZrO 2 ) 0.85 (YSZ) + 50 nm CeO 2 ). We create epitaxial mesoporous cathodes of (La 0.60 Sr 0.40 ) 0.95 Co 0.20 Fe 0.80 O 3 (LSCF) on the substrate by growing LSCF /MgO vertically aligned nanocomposite (VAN) films by pulsed laser deposition (PLD), followed by selectively etching out the MgO. To enable valid comparison with literature, the cathodes are also grown on single-crystal substrates, confirming state-of-the-art performance with an area specific resistance of 100 Ω at 500° C and activation energy down to 0.97 eV. The work marks an important step towards the commercialisation of high-performance microsolid oxide fuel cells for portable power applications.1.

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Fundamental Understanding and Applications of Protonic Y‐ and Yb‐Coped Ba(Ce,Zr)O₃ Perovskites: State‐of‐the‐Art and Perspectives

Danilov,

Starostina,

Starostin

et al. 2023

Advanced Energy Materials

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Proton‐conducting oxide materials are interesting objects from both fundamental and applied viewpoints due to the origination of protonic defects in a crystal structure as a result of their interaction with hydrogen‐containing atmospheres at elevated temperatures. The high mobility of such defects at temperatures between 400 and 700 °C leads to superior ionic conductivity. As a result, some perovskite‐type proton‐conducting oxides have been proposed as electrolytes for solid oxide fuel and electrolysis cells. Barium cerate (BaCeO3), barium zirconate (BaZrO3), and barium cerate‐zirconates (BaCeO3–BaZrO3) have been widely studied in terms of the parent phases of proton‐conducting electrolytes. Among them, Y and Yb co‐doped Ba(Ce,Zr)O3 can be identified as one of the most promising systems so far. This review discloses key functional properties of such phases and explains the increased attention of researchers to this system.

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Development of proton conducting fuel cells using nickel metal support

Cited by 18 publications

References 53 publications

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates

Fundamental Understanding and Applications of Protonic Y‐ and Yb‐Coped Ba(Ce,Zr)O₃ Perovskites: State‐of‐the‐Art and Perspectives

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Development of proton conducting fuel cells using nickel metal support

Cited by 18 publications

References 53 publications

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

Microstructure and long-term stability of Ni–YSZ anode supported fuel cells: a review

Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates

Fundamental Understanding and Applications of Protonic Y‐ and Yb‐Coped Ba(Ce,Zr)O3 Perovskites: State‐of‐the‐Art and Perspectives

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Product

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Fundamental Understanding and Applications of Protonic Y‐ and Yb‐Coped Ba(Ce,Zr)O₃ Perovskites: State‐of‐the‐Art and Perspectives