Improving sulfur tolerance of Ni-YSZ anodes of solid oxide fuel cells by optimization of microstructure and operating conditions

Mehran, Muhammad Taqi; Khan, Muhammad Zubair; Lee, Seung-Bok; Lim, Tak‐Hyoung; Park, Sam; Song, Rak‐Hyun

doi:10.1016/j.ijhydene.2018.04.200

Cited by 42 publications

(11 citation statements)

References 34 publications

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“…The detrimental Ni migration in SOEC mode may be alleviated to a large extent by exchanging the 8YSZ with CGO10 or with infiltration of the Ni-8YSZ [38]. The sulfur poisoning may be alleviated by optimization of the electrode microstructure [39], by exchanging YSZ with CGO [40,41] or by just infiltrating doped ceria into the Ni-YSZ cermet [42]. However, in case of electrolysis of CO 2 it is necessary to remove even ppb traces of sulfur with a suitable filter in order to avoid poisoning of Ni over time [43].…”

Section: Fuel Electrodementioning

confidence: 99%

Materials for reversible solid oxide cells

Mogensen

2020

Current Opinion in Electrochemistry

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Section: Fuel Electrodementioning

confidence: 99%

Materials for reversible solid oxide cells

Mogensen

2020

Current Opinion in Electrochemistry

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“…Similarly, this Ni coarsening degradation phenomenon is widely studied for the SOFC anodes in the literature [168][169][170][171][172]. On the other hand, Kim et al [117] studied the degradation behavior of various cathode currentcollecting materials for anode-supported FT-SOFC.…”

Section: Degradation Of Ft-sofc Cells and Stacksmentioning

confidence: 94%

Flat-tubular solid oxide fuel cells and stacks: a review

Khan

Iltaf

Ishfaq

et al. 2021

Journal of Asian Ceramic Societies

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Solid oxide fuel cells (SOFCs) offer numerous advantages in terms of high efficiency and clean electrochemcial energy conversion devices. However, owing to high operation temperature, this technology is restricted to stationary applications and leads to components degradation and long-term stability issues. The development of new design and their modifications for improving the electrochemical performance at intermediate temperatures and durability of the SOFC components are very important to bring this technology one step closer to the market. In this context, the current research on the development, properties, performance, and stability of geometrically modified flat-tubular (FT) SOFC cell and the stack is reviewed in detail. This advanced design exhibits higher performance compared to the tubular type and longer stability in comparison to the planar type SOFCs. The application of the interconnect material is emerging as the key factor influencing the electrical output of the FT-SOFC and operation at high temperatures and current density are the critical issues for cell durability. New stack designs are discussed in detail and experimental findings are summarized.

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“…A similar contribution was made by Tulloch et al 124 who worked on La 1 − x Sr x MnO 3 type perovskite for even values of X (0‐1) and found La 0.4 Sr 0.6 MnO 3 to be most active towards ORR. The catalyst was found to be quite crystalline with low surface area (<1 m 2 g −1 ) and a high degree of porosity 55,125,126 . It was found that as manganese approaches its valance state Mn 4+ , the Sr 2+ doping enhances the electrical conductivity of the catalyst, thus, increasing the catalytic activity, with the catalyst discovered to be more active at Mn 4+ .…”

Section: Review Of Perovskite Catalysts For Oer/orr and Hersmentioning

confidence: 99%

“…Transition metal oxides (TMOs) are a possible substitute for traditional precious metal oxygen electrocatalyst, for they provide d‐orbital to bind oxygen species and are economical. But the spinel oxides still have limited activity and researchers are moving towards more efficient, low cost electrocatalyst for OER/HER & ORR 54,55 . Amongst TMOs, perovskite has an exceptional capability of accommodating multiple cations and allow partial substitution of cations at A‐site and B‐site.…”

Section: Introductionmentioning

confidence: 99%

Role of perovskites as a bi‐functional catalyst for electrochemical water splitting: A review

et al. 2020

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The electrochemical water splitting by using renewable electricity is being considered as a sustainable, clean and considerable source of hydrogen fuel for future transportation and energy applications. The sluggish kinetics at anode and cathode, thus, require plenty of research work on the development of an efficient and stable electrocatalyst, which would provide the enhanced activity of water splitting reaction as well as stability for long-term operation. This review draws a detailed sketch of the progress in the pursuit of replacing noble metals with non-precious perovskite-based substitutes without compromising the key electrocatalyst characteristics. Herein, we critically analysed the latest research work and progress of perovskite oxides for anodic/oxygen reduction reaction/cathodic, including the mechanism behind perovskite oxide catalytic reactions, controlled composition as well as the role of various design strategies to achieve high catalytic performance. Moreover, the article also provides an insight to the associated density functional theory that can provide profound understanding of mechanism, involved behind these reactions and, the need for computational studies to exploit the active area of catalysts. It is believed that this article will assist researchers to explore key area of research in the current generation perovskites that show enhanced catalytic performance as well as to work on unforeseen challenges.

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Improving sulfur tolerance of Ni-YSZ anodes of solid oxide fuel cells by optimization of microstructure and operating conditions

Cited by 42 publications

References 34 publications

Materials for reversible solid oxide cells

Materials for reversible solid oxide cells

Flat-tubular solid oxide fuel cells and stacks: a review

Role of perovskites as a bi‐functional catalyst for electrochemical water splitting: A review

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