Highly stable microtubular solid oxide fuel cells based on integrated electrolyte/anode hollow fibers

Meng, Xiuxia; Wang, Yan; Yang, Naitao; Tan, Xiaoyao; Liu, Shaomin

doi:10.1016/j.jpowsour.2014.11.027

Cited by 31 publications

(10 citation statements)

References 45 publications

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“…The overall anode porosities were calculated around 55% to 60% by volume before CuO/CeO 2 loading, and after loading the anode porosity of the half‐cells reduces to around 30%. This value is similar with the work done by Meng et al and sufficinent for the requirement of as an anode of SOFC …”

Section: Resultssupporting

confidence: 90%

Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Öksüzömer

Sarıboğa

2018

Int J Energy Res

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Summary In this study, a conventional Ni/yttria‐stabilized zirconia (YSZ) anode and a new Cu‐CeO2‐YSZ anode structure were assembled in an attempt to combine the advantages of both structures for use in direct methane solid oxide fuel cells. For this purpose, only a limited region (≤20 μm) of NiO/YSZ was deposited at the boundary of the electrolyte to benefit from the superior catalytic activity of Ni in the cells, while the rest of the cell benefited from the Cu‐CeO2‐YSZ anode structure, which does not cause cracking reactions. First, the effects of different pore formers on the anode skeleton, as well as the interactions of the Ni‐Cu species in the anode skeleton, are discussed. Then, the NiO/YSZ‐interlayer‐containing button cells with different thicknesses (≤20) and different ratios of NiO (40 wt%, 50 wt%, and 60 wt%) were studied. After the examination of the cells, 2 model cells with outstanding performance and 2 additional internal reference cells, conventional Ni/YSZ and Cu‐CeO2‐YSZ, were scaled up, and performance analysis and long‐term stability studies were carried out. As a result, for solid oxide fuel cells with increased carbonization resistance (around 6% performance loss due to carbonization after 100‐hour stability testing) and 86.1% of the initial performance of the conventional Ni/YSZ anode structure, a 15‐μm‐thick 40 wt% NiO/60 wt% YSZ interlayer with a dual layer anode structure is proposed.

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Section: Resultssupporting

confidence: 90%

Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Öksüzömer

Sarıboğa

2018

Int J Energy Res

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“…[157][158][159] It is also feasible to prevent the formation of the internal dense layer by adding a solvent to the internal coagulant, but this method may not be suitable for planar SOFCs. [61,150] Utilization of the sacrifice graphite is usually applied to a tape-casting-based phase inversion method. [45] A layer of graphite was typically cast on the bed before or after the functional layer.…”

Section: Planar Solid Oxide Cells Prepared Via Modified Phase Inversionmentioning

confidence: 99%

Manipulating and Optimizing the Hierarchically Porous Electrode Structures for Rapid Mass Transport in Solid Oxide Cells

Hou

Pan

et al. 2022

Adv Funct Materials

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Over the past decades, considerable efforts have been made to develop hierarchically porous electrodes for the high surface area, the fast velocity of fuels/products to/away from the reaction site, and the high loading of thermal-and/or electrochemical-catalysts. Manipulation of the hierarchical structure is one of the key steps for high performance in applications of efficient energy storage and conversion such as solid oxide cells. This review starts with a brief introduction to the basic concept of mass transport and how mass transport may affect performance. Then, the latest developments in enhancing the performance of cells through modification or optimization of the hierarchically porous electrode structures, including altering the geometry or morphology and increasing the triple-phase boundaries length of electrodes are summarized. Subsequently, the unique characteristics of microstructures that are critical to enhancing electrode performance and provide important insights into the mechanisms of performance (activity and durability) enhancement, aiming at achieving the rational design of better electrode architecture are highlighted. Finally, the remaining challenges for the knowledge-based design of highly efficient electrodes for electrochemical devices, together with possible directions and future perspectives for the development of highly efficient electrodes through optimization of microstructure are discussed.

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“…Volume 47 There are two problems encountered when designing electrode structures for URFC systems [19]. For PEM fuel cells, highly hydrophobitised carbon paper or carbon cloth is usually adopted as the gas diffusion layer or electrode materials, however, they cannot be used as the GDL of a URFC for the following two reasons: firstly, the carbon materials tend to corrode at high potentials on the oxygen electrode side during the water electrolysis operation; secondly, GDLs have to achieve an appropriate balance between the hydrophobic and hydrophilic properties for both the fuel cell and water electrolysis operations, as shown in Fig.…”

mentioning

confidence: 99%

Recent Development and Applications in Electrodes for URFC

Chen

2015

ILCPA

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The design of electrodes for URFC (unitised regenerative polymer electrolyte fuel cells) requires a delicate balancing of transport media. Gas transport, electrons and protons must be carefully optimised to provide efficient transport to and from the electrochemical reaction sites. This review is a survey of recent literature with the objective to identify common components and design and assembly methods for URFC electrodes, focusing primarily on the development of a better performing bifunctional electrocatalyst for the oxygen reduction and water oxidation. Advances in unitised regenerative fuel cells study have yielded better performing oxygen electrocatalysts capable of improving energy efficiency with longer endurance and less performance degradation over time. Fuel cells using these electrocatalyst have a possible future as a source of energy.

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Highly stable microtubular solid oxide fuel cells based on integrated electrolyte/anode hollow fibers

Cited by 31 publications

References 45 publications

Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Manipulating and Optimizing the Hierarchically Porous Electrode Structures for Rapid Mass Transport in Solid Oxide Cells

Recent Development and Applications in Electrodes for URFC

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Highly stable microtubular solid oxide fuel cells based on integrated electrolyte/anode hollow fibers

Cited by 31 publications

References 45 publications

Combined Cu-CeO2/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Combined Cu-CeO2/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Manipulating and Optimizing the Hierarchically Porous Electrode Structures for Rapid Mass Transport in Solid Oxide Cells

Recent Development and Applications in Electrodes for URFC

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Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells

Combined Cu-CeO₂/YSZ and Ni/YSZ dual layer anode structures for direct methane solid oxide fuel cells