A heuristic approach to boost the performance and Cr poisoning tolerance of solid oxide fuel cell cathode by robust multi-doped ceria coating

Ishfaq, Hafiz Ahmad; Khan, Muhammad Zubair; Shirke, Yogita M.; Qamar, Sanaullah; Hussain, Amjad; Mehran, Muhammad Taqi; Song, Rak‐Hyun; Saleem, Mohsin

doi:10.1016/j.apcatb.2022.122178

Cited by 35 publications

(8 citation statements)

References 78 publications

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“…The CM results from charge-transfer interactions between the surface of the nanoparticles and the electronic states of the molecules, which will also result in an increase in Raman signals. As a result, the surface plasmon resonance (SPR) is what the EM depends on, whereas the Raman-active molecule and its interaction with nanoparticle surfaces determine the CM 18,19 .…”

Section: Resultsmentioning

confidence: 99%

Comparison of Surface-Enhanced Raman Scattering in Colloidal Silver Nanostar ‎and Colloidal Silver Nanocubes

Shakir,

Yaseen,

Dhaigham

2024

Baghdad Sci.J

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يعد تشتت رامان المحسن بالسطح (SERS) طريقة سريعة الاستجابة وانتقائية للغاية تعمل على تحسين إشارات تشتت رامان للجزيئات التي تستخدم المواد النانوية كركائز. يتيح SERS تحديد مادة بتراكيز منخفضة جدًا عن طريق تضخيم المجال الكهربائي أو التحسين الكيميائي بسبب سطح Plasmon (LSP) الموضعي. في هذا العمل ، تم فحص التراكيز المنخفضة من كبريتات الصوديوم (Na2SO4) كمواد ملوثة للمياه باستخدام SERS السائل على أساس البنى النانوية الغروية للفضة . تم تحضير نوعين من الهياكل النانوية للفضة: نجمية ومكعبة الشكل، واستخدامها كركائز SERS سائلة . تم استخدام طريقة الاختزال الكيميائي لتركيب الهياكل النانوية Ag من أيونات الفضة باستخدام عوامل الاختزال. تم استخدام مجهر القوة الذرية (AFM) والمجهر الماسح الإلكتروني (SEM) لتوصيف الفضة النانوية. تم الإبلاغ عن إجراءات SERS لهذه الجسيمات النانوية في الكشف عن كبريتات الصوديوم (Na2SO4) وتحليلها فيما يتعلق بكل من الشكل والحجم باستخدام ليزر 532 نانومتر. لاحظنا أن بنية الجسيمات النانوية ذات الزوايا الأكثر عددا والاكثر حدة أعطت إشارات SERS أقوى. ترتبط الزيادة في إشارة SERS بـ LSP ، والتي تنتج عن ترسب جزيئات كبريتات الصوديوم في النقاط الساخنة (المسافات بين الهياكل النانوية للفضة المتجمعة) في المحلول. لوحظ زيادة قمم رامان مع زيادة تركيز الكبريتات. يوفر هيكل الفضة النانوي النجمي المقترح نشاط SERS أقوى من الهيكل النانوي المكعب. هذا يعني أن SERS مع الهياكل النانوية النجمية أكثر كفاءة منها في الهياكل المكعبة النانوية. أيضًا ، يلعب تركيز الكبريتات دورًا رئيسًا في الكشف حيث تصبح إشارة رامان أقوى مع زيادة التركيز. كان أعلى معامل تعزيز تحليلي للكبريتات تم الحصول عليه لـ SERS في محلول الفضة النانوي النجمي الغروي 2.6 × 103 عند 7 × 10-7 م بأقل تركيز ، وكان 1.7 × 103 عند 7 × 10-7 م أقل تركيز لـ SERS في محلول الفضة النانوي المكعب الغروي.

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Section: Resultsmentioning

confidence: 99%

Comparison of Surface-Enhanced Raman Scattering in Colloidal Silver Nanostar ‎and Colloidal Silver Nanocubes

Shakir,

Yaseen,

Dhaigham

2024

Baghdad Sci.J

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“…After cosintering and cathode coating, Pt mesh and thin Pt wire were attached to that area to prepare the reference electrode. The Pt reference electrode was around 4 mm away from the cathode to avoid short circuiting. , …”

Section: Methodsmentioning

confidence: 99%

“…The Pt reference electrode was around 4 mm away from the cathode to avoid short circuiting. 37,38 A schematic representation of the cell and experimental setup can be found elsewhere. 6 Here, the cells were tested for 200, 500, and 1000 h at 900 °C under a persistent current load of 450 mA cm −2 .…”

Section: Introductionmentioning

confidence: 99%

Heuristic Approach to Predict the Performance Degradation of a Solid Oxide Fuel Cell Cathode

Khan,

Mehran,

Hussain

et al. 2023

ACS Appl. Mater. Interfaces

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“…A major issue in developing solid oxide fuel cells (SOFCs) is the long-term durability of SOFC systems and cell components. In the last decade, a huge number of long-term stability tests have been carried out on SOFCs materials and electrode structures, singlecell, stacks, and complete systems, aiming at low degradation rates over the required lifetime [1] [2]. Even though many of the tests have been conducted for significantly shorter periods, they uncovered an extensive number of degradation mechanisms that can result in severe failures of components and the system.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is challenging to realize the desired structure of the electrolyte and buffer layer due to the TEC of materials, the desired microstructure of components, shrinkage mismatch, and the nature of the substrate, which has to be well-connected interface without interfacial pores. As interfacial pores and the weak interface can affect the ohmic resistance, electrochemical performance of cells, and longterm durability [2] [7].…”

Section: Introductionmentioning

confidence: 99%

Durability Study of Anode-Supported SOFC with Large-Area Fabricated By 4-Layer Sequential Co-Lamination and GDC Co-Firing Process

Hussain¹,

Song²,

KIM³

et al. 2023

ECS Trans.

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Electrolyte-Cathode interfaces are life-threatening regions of solid oxide fuel cells where degradation phenomena occur due to chemical interdiffusion. The Buffer layer is inserted between the electrolyte-cathode to limit the cation exchange across the interface. However, state of the art buffer layer coated by screen printing does not fully prevent cation migration which results in the formation of insulating phases such as La2ZrO7 and SrZrO3. Herein, a reliable four-layered (NiO-YSZ, NiO-CeScSZ, CeScSZ, and GDC) thin film-based anode-supported SOFCs with a large-area (12 cm × 12 cm) were fabricated by sequential co-lamination, in which all cell components perform a distinct role to enhance the interfacial connectivity and packing density of electrolytes. This enhanced connectivity with a highly dense electrolyte (5-6 µm) and buffer layer (2-3 µm) was accomplished on the porous anode support without any structural defects. The single cell (144 cm2) showed a power output of 38 W at a total current of 50 A (700 °C). The Post-tested cell had exceptional micro-structural characteristics and excellent interfacial adhesion and retained its structural integrity during steady and unsteady state operation. Also, the formation of insulating phases and decomposition of the cathode were completely prevented, resulting in a remarkable improvement in durability. The cell with a four-layered structure exhibits an extreme low degradation rate of 0.2% kh-1 under 25 A current and 21 dynamic load cycling conditions, which satisfies the strict benchmark of durability for technology commercialization.

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A heuristic approach to boost the performance and Cr poisoning tolerance of solid oxide fuel cell cathode by robust multi-doped ceria coating

Cited by 35 publications

References 78 publications

Comparison of Surface-Enhanced Raman Scattering in Colloidal Silver Nanostar ‎and Colloidal Silver Nanocubes

Comparison of Surface-Enhanced Raman Scattering in Colloidal Silver Nanostar ‎and Colloidal Silver Nanocubes

Heuristic Approach to Predict the Performance Degradation of a Solid Oxide Fuel Cell Cathode

Durability Study of Anode-Supported SOFC with Large-Area Fabricated By 4-Layer Sequential Co-Lamination and GDC Co-Firing Process

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