Novel light-weight, high-performance anode-supported microtubular solid oxide fuel cells with an active anode functional layer

Liu, Tong; Wang, Yao; Ren, Cong; Fang, Shumin; Mao, Yating; Chen, Fanglin

doi:10.1016/j.jpowsour.2015.06.018

Cited by 31 publications

(8 citation statements)

References 31 publications

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“…These trends, the higher MPD with the lower sintering temperature and the more improvement with the lower operating temperature, were consistent in a measured temperature range of 550-750 °C as shown in Figure S4. To the best of our knowledge, the MPDs of NF 800 cell greatly surpass the previously reported values of YSZ electrolyte-based cells with LSM or YSZ/LSM as cathode materials, typically developed for operation at higher than 700 °C as shown in Figure 4(c) [37][38][39][40][41][42][43][44][45][46][47][48][49][50].…”

mentioning

confidence: 56%

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

Kim

Choi

Mun

et al. 2023

International Journal of Energy Research

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The feasibility and opportunity of nanostructured and defect-engineered electrodes for exceptional performance and stability of solid oxide fuel cells operating at intermediate temperatures (500–700°C) are reported in this study. The electrode is designed with infiltrated La0.4Sr0.6MnO3-δ (LSM) nanoparticles as oxygen reduction reaction catalysts on an yttria-stabilized zirconia (YSZ) nanofiber scaffold with a controlled sintering temperature of 800–1200°C for optimized nanostructures and defect concentration of the nanofiber scaffold. Nanostructured electrode with the lowest sintering temperature of 800°C exhibits ~8.1 times higher specific surface area and ~1.6 times higher oxygen vacancy concentration than that with a sintering temperature of 1200°C. The cell with a sintering temperature of 800°C demonstrates an outstanding performance of ~2.11 and 1.09 W/cm2 at 700 and 600°C, respectively, with excellent stability for 300 h under the current density of 1.5 A/cm2 at 750°C.

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confidence: 56%

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

Kim

Choi

Mun

et al. 2023

International Journal of Energy Research

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“…[108,135,136] The micro-tube design allowed the increases of the specific surface area, the improvement of mechanical properties, and a fast starting-up and shutting-down. [137] For the above advantages, MT-SOFCs have received increasing attention in recent years. [134,138] Tubular SOFCs can be fabricated by several mature and cost-effective manufacturing processes, [139] showing advantages such as good thermal cycling stability and easy assembling.…”

Section: Effects Of Solvent Non-solvent and Polymer Additivesmentioning

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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“…For instance, Ahn et al reported that for cells based on doped ceria as an electrolyte, the addition of an AFL with dispersed nanometric GDC particles significantly increased both OCV and performance from 0.677 V and 407 mW·cm –2 to 0.796 V and 994 mW·cm –2 at 650 °C. As reported by Chen et al, the development of a low-weight mT-SOFC with high performance also requires the use of an optimal AFL. In this cell, the anode support composed of a thick highly porous finger-like-macrovoids layer (HPFML) near the inner surface, which provides fast gas diffusion channels, has to be combined with a thin small pore layer (SPL) near the outer surface with sufficient TPBs to act as an active AFL.…”

Section: Introductionmentioning

confidence: 99%

Influence of Anode Functional Layers on Electrochemical Performance and Mechanical Strength in Microtubular Solid Oxide Fuel Cells Fabricated by Gel-Casting

Morales

Laguna‐Bercero

2018

ACS Appl. Energy Mater.

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Anode-supported micro-tubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as electrolyte were fabricated, varying the composition and number of anode functional layers (AFLs), by combining the aqueous gel-casting and spraycoating techniques. Suitable aqueous slurry formulation of NiO-SDC was prepared using agarose as a gelling agent for gel-casting of tubular supports. Afterwards, 40:60 and 50:50 wt.% NiO-SDC as AFLs and SDC electrolyte were deposited by spraycoating, and subsequently co-sintered. Finally, mT-SOFCs with 2.5 mm outer diameter and thicknesses of 380 µm support; 0, 12 and 24 µm AFLs; 15 µm electrolyte; and 30 µm cathode were obtained. The influence of AFLs on the performance and mechanical integrity was investigated for the three cells. For this purpose, electrochemical and mechanical tests at both macroscopic and micro-/nanometric scales (at the AFLs region) were determined by flexural strength and nanoindentation techniques, respectively. The results evidence that the use of AFLs with an adequate composition and microstructure in the mT-SOFCs is required to improve the performance and mechanical strength of cell. The cell with a single-layer AFL of 50:50 wt.% NiO-SDC and 12 µm thickness exhibited the best performance (0.52 Wcm-2) at 650ºC using hydrogen as fuel and air as oxidant.

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Novel light-weight, high-performance anode-supported microtubular solid oxide fuel cells with an active anode functional layer

Cited by 31 publications

References 31 publications

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

Infiltrated Nanofiber-Based Nanostructured Electrodes for Solid Oxide Fuel Cells

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

Influence of Anode Functional Layers on Electrochemical Performance and Mechanical Strength in Microtubular Solid Oxide Fuel Cells Fabricated by Gel-Casting

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