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Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion SCIE
期刊论文 | 2025 , 44 | MATERIALS TODAY COMMUNICATIONS
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Abstract :

Laser powder bed fusion (LPBF) has significant advantages in the fabrication of complex-structured duplex stainless steel (DSS). However, compared with cast samples, the duplex stainless steel prepared by LPBF has higher strength, but the elongation and corrosion resistance are significantly deteriorated, which restricts its extensive promotion and application. To achieve a balance between mechanical properties and corrosion resistance, the heat treatment was carried out at different temperatures of 950 degrees C, 1050 degrees C, 1150 degrees C, and 1250 degrees C. The influence of microstructure including phase ratio, grain size, and grain boundary features with different temperature heat treatment on the mechanical properties and corrosion resistance was investigated. The results show that the as-built samples had almost all ferrite due to the extremely fast cooling rate even if the 2205 DSS powders were used. Ferrite-austenite structure could be obtained with different heat treatment temperature, which increase LAGB and coincidence site lattice (CSL) boundaries and reduce residual stress. When the 2205 DSS prepared by LPBF was heat-treated at 1050 degrees C for 1 h, the two-phase ratio was close to 1:1 and a highest content of LAGB+ & sum;3(n) CSL of 25.50 % could be obtained. The H-1050 sample demonstrated an equilibrium between mechanical properties and corrosion resistance, exhibiting a tensile strength of 778.79 MPa, a yield strength of 592.43 MPa, a corrosion current density of 1.21 mu A/cm2, the highest self-corrosion potential of -0.718 V, and the largest charge transfer resistance of 12.4 x 10' Omega & sdot;cm2. Some corrosion pits caused by ferrite corrosion can be seen and the lowest corrosion depth of H-1050 was about 7.4 mu m. It's concluded that heat treatment can change the microstructure of DSS and improve its comprehensive performance. The best heat treatment temperature was found to be 1050 degrees C. The research conducted will provide theoretical guidance for the selection of heat treatment temperature for DSS prepared by LPBF.

Keyword :

Corrosion resistance Corrosion resistance Duplex stainless steel Duplex stainless steel Heat treatment Heat treatment Laser powder bed fusion Laser powder bed fusion Mechanical properties Mechanical properties

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GB/T 7714 Shen, Tongwei , Feng, Li , Shao, Yanqun et al. Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion [J]. | MATERIALS TODAY COMMUNICATIONS , 2025 , 44 .
MLA Shen, Tongwei et al. "Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion" . | MATERIALS TODAY COMMUNICATIONS 44 (2025) .
APA Shen, Tongwei , Feng, Li , Shao, Yanqun , Chen, Yunxiang , Xia, Xiaojian , Chen, Yaliang et al. Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion . | MATERIALS TODAY COMMUNICATIONS , 2025 , 44 .
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Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion EI
期刊论文 | 2025 , 44 | Materials Today Communications
Relationship between phase transformation and corrosion performance of 2205 duplex stainless steel fabricated by laser powder bed fusion Scopus
期刊论文 | 2025 , 44 | Materials Today Communications
Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors SCIE
期刊论文 | 2025 , 118 | JOURNAL OF ENERGY STORAGE
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Abstract :

Owing to its distinctive structure and variable oxidation states, Tungstate-based oxides have become a highpotential electrode material for supercapacitors (SCs). However, the insufficient active sites and the slow kinetics of charge transport hinder its practical application in SCs fields. Doping anion has been demonstrated to be a feasible approach to improve the electrochemical performance of electrode materials. Herein, F-doped ZnWO4 (denoted as F-ZnWO4) with nanosheet arrays were synthesized on nickel foam by hydrothermal method. The effects of doping F on the microstructure and electrochemical properties of F-ZnWO4 are systematically studied. It provides additional ion transport channels for redox reactions, enhances the conductivity of the electrode material, and provides abundant active sites, thereby promoting the charge transfer kinetics of the electrode material. It indicates that doping F can reshape the morphology of F-ZnWO4, expand the lattice spacing and induce some oxygen vacancies (OV). Compared with ZnWO4, the Ov concentrations of F-ZnWO4-2 increase from 20.10 % to 36.29 %. F-ZnWO4-2 electrode has a specific capacitance of 1450.0 F/g at a current density of 1 A/g and retains a capacitance of 1353.1 F/g even at a higher current density of 10 A/g. The assembled F-ZnWO4-2// RuO2-ZnO asymmetric supercapacitor (ASC) exhibits an energy density of 37.4 Wh/kg and a corresponding power density of 831.4 W/kg. Two series-connected ASCs can lighten six LED lights for 6 min. It provides a way to further develop low-capacitance metal oxide materials in the field of electrochemical energy storage.

Keyword :

Asymmetric supercapacitors Asymmetric supercapacitors F-doped ZnWO4 F-doped ZnWO4 Nanosheet array structure Nanosheet array structure Oxygen vacancies Oxygen vacancies

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GB/T 7714 Zhu, Zhijin , Chen, Fuqiang , Yang, Mianfang et al. Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors [J]. | JOURNAL OF ENERGY STORAGE , 2025 , 118 .
MLA Zhu, Zhijin et al. "Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors" . | JOURNAL OF ENERGY STORAGE 118 (2025) .
APA Zhu, Zhijin , Chen, Fuqiang , Yang, Mianfang , Shao, Yanqun , Li, Jiamei , Shen, Tongwei et al. Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors . | JOURNAL OF ENERGY STORAGE , 2025 , 118 .
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Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors Scopus
期刊论文 | 2025 , 118 | Journal of Energy Storage
Effect of F-doped ZnWO4 electrodes with oxygen vacancies on high-performance asymmetric supercapacitors EI
期刊论文 | 2025 , 118 | Journal of Energy Storage
Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy EI
期刊论文 | 2025 , 514 | Chemical Engineering Journal
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Abstract :

Solid oxide fuel cells, one of the most efficient energy conversion devices, are prone to performance degradation induced by cation surface segregation and chromium poisoning of cathodes. Herein, we enhance the chromium-tolerance of La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF) cathode by the regulation of surface strains through modification with a nanoscale, dual-phase coating. The coating is composed of a nanoscale BaCoO3−δ conformal film and BaCeO3 nanoparticles, and the strong interactions at BaCoO3−δ/LSCF and BaCeO3/LSCF heterointerfaces impose a compressive strain on the LSCF scaffold. The strain effect significantly suppresses the strontium surface segregation and thus mitigates the chromium attack on the cathode. Further, the microstructural and phase stabilities of the coating in volatile chromium environment also contribute to the long-term operational stability of the modified LSCF cathode. A single cell with the modified LSCF cathode demonstrates an excellent peak power density of 1.46 W cm−2 at 750 °C and remarkable chromium-durability in wet air. This work opens up a new route for suppressing strontium surface segregation and chromium-poisoning of the cathodes. © 2025 Elsevier B.V.

Keyword :

Scaffolds (biology) Scaffolds (biology) Segregation (metallography) Segregation (metallography) Surface segregation Surface segregation

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GB/T 7714 Huang, Jiongyuan , Qian, Jiaqi , Wang, Cheng Cheng et al. Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy [J]. | Chemical Engineering Journal , 2025 , 514 .
MLA Huang, Jiongyuan et al. "Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy" . | Chemical Engineering Journal 514 (2025) .
APA Huang, Jiongyuan , Qian, Jiaqi , Wang, Cheng Cheng , Chen, Zhiyi , Zhang, Haipeng , Cheng, Zixiang et al. Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy . | Chemical Engineering Journal , 2025 , 514 .
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Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy Scopus
期刊论文 | 2025 , 514 | Chemical Engineering Journal
Mitigating chromium attack of cathode for durable solid oxide fuel cells through a strain regulation strategy SCIE
期刊论文 | 2025 , 514 | CHEMICAL ENGINEERING JOURNAL
ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors SCIE
期刊论文 | 2025 , 507 | CHEMICAL ENGINEERING JOURNAL
WoS CC Cited Count: 7
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Abstract :

Layered double hydroxides (LDHs) have long been a hot research topic in supercapacitors because of their abundant reaction sites. However, LDH nanosheets tend to easily stack together during the synthesis process. Therefore, in this paper, a simple and effective stirring aging method was used to grow ZIF-67 uniformly on the surface of Ni-Mn LDH. The strategy can fully utilize the high specific surface area of ZIF-67 to provide a large number of active sites for Ni-Mn LDHs, which results in a significant increase of the capacitance contribution. The core-shell structure NM LDHs@Z has significant redox peaks and the surface redox reaction. The capacitance contribution of NM LDHs@Z increase from 21.7 % to 91.4 %. But it does not belong battery-type supercapacitors from the CV curves. It is necessary to find out a better characterization parameter to estimate the type of battery or capacitor, instead of the CV and GCD curve shapes. The Ni-Mn LDHs@ZIF-67 composites can achieve a specific capacitance of 1340 F g- 1at a current density of 1 A g-1. As the specific current density is increased to 10 A g- 1, the capacity retention can reach about 75 %, which is superior to that of the Ni-Mn LDHs (60 %). The hybrid supercapacitor is composed of Ni-Mn LDHs@ZIF-67 composite as the cathode and activated carbon (AC) as the anode with a 128 F g- 1 specific capacitance at a 1 A g- 1 current density and a 45.8 Wh kg- 1 energy density at a 850 W kg- 1 power density. The Ni-Mn LDH@ZIF-67 composites has a potential application in hybrid supercapacitors.

Keyword :

Aggregated LDHs Aggregated LDHs Ni-Mn LDHs Ni-Mn LDHs Supercapacitors Supercapacitors ZIF-67 ZIF-67

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GB/T 7714 Chen, Fuqiang , Li, Jiamei , Shao, Yanqun et al. ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 .
MLA Chen, Fuqiang et al. "ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors" . | CHEMICAL ENGINEERING JOURNAL 507 (2025) .
APA Chen, Fuqiang , Li, Jiamei , Shao, Yanqun , Zhu, Zhijin , Shen, Tongwei , Chen, Kongfa et al. ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors . | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 .
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ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors EI
期刊论文 | 2025 , 507 | Chemical Engineering Journal
ZIF-67 wraps Ni-Mn LDHs nanosheets to enhance the capacitive contribution of supercapacitors Scopus
期刊论文 | 2025 , 507 | Chemical Engineering Journal
Self-assembled Gd 0.1 Ce 0.9 O 1.95-BaGd 0.8 La 0.2 Co 2 O 6-δ nanocomposite cathode for efficient protonic ceramic fuel cells SCIE
期刊论文 | 2024 , 50 (13) , 22574-22582 | CERAMICS INTERNATIONAL
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Abstract :

Protonic ceramic fuel cells (PCFCs) are characterized by a low activation energy for proton conduction and a high fuel utilization efficiency at low -to -intermediate temperatures. However, the sluggish oxygen reduction reaction kinetics on the cathodes drastically limit the power output performance of PCFCs. Herein, multiphase Gd 0.1 Ce 0.9 O 1.95 - BaGd 0.8 La 0.2 Co 2 O 6- delta (GDC-BGLC) nanocomposite cathodes are prepared by coupling selfassembly and sintering -free electrode construction methods. The nanocomposite cathode comprises mixed H + /e - conducting BGLC and O 2- conducting GDC and BaCoO 3 nanoparticles, and these phases are homogeneously mixed with coherent heterointerfaces. The nanocomposite cathode exhibits a significant increase in surface oxygen vacancies and three-phase boundaries, enhanced catalytic activity, and reduced activation energy for the oxygen reduction and water formation reactions. The results imply that the oxygen reduction and water formation reactions on the multiphase GDC-BGLC nanocomposite electrodes are most likely the dissociation, reduction and diffusion of oxygen species, which in turn is affected by the water vapor formed. An anodesupported single cell with the GDC-BGLC cathode exhibits a peak power density of 810 mW cm -2 at 700 degrees C with excellent operating stability at 650 degrees C for 110 h. This study provides a new strategy for the preparation of a high-performance and durable nanocomposite cathode for PCFCs.

Keyword :

Heterointerface Heterointerface Nanocomposite cathode Nanocomposite cathode Protonic ceramic fuel cells (PCFCs) Protonic ceramic fuel cells (PCFCs) Reaction mechanism Reaction mechanism Self -assembly Self -assembly

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GB/T 7714 Liao, Dan , Jia, Lichao , Xu, Jianghui et al. Self-assembled Gd 0.1 Ce 0.9 O 1.95-BaGd 0.8 La 0.2 Co 2 O 6-δ nanocomposite cathode for efficient protonic ceramic fuel cells [J]. | CERAMICS INTERNATIONAL , 2024 , 50 (13) : 22574-22582 .
MLA Liao, Dan et al. "Self-assembled Gd 0.1 Ce 0.9 O 1.95-BaGd 0.8 La 0.2 Co 2 O 6-δ nanocomposite cathode for efficient protonic ceramic fuel cells" . | CERAMICS INTERNATIONAL 50 . 13 (2024) : 22574-22582 .
APA Liao, Dan , Jia, Lichao , Xu, Jianghui , Chen, Zhiyi , Huang, Jiongyuan , Ai, Na et al. Self-assembled Gd 0.1 Ce 0.9 O 1.95-BaGd 0.8 La 0.2 Co 2 O 6-δ nanocomposite cathode for efficient protonic ceramic fuel cells . | CERAMICS INTERNATIONAL , 2024 , 50 (13) , 22574-22582 .
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Self-assembled Gd0.1Ce0.9O1.95-BaGd0.8La0.2Co2O6‒δ nanocomposite cathode for efficient protonic ceramic fuel cells EI
期刊论文 | 2024 , 50 (13) , 22574-22582 | Ceramics International
Self-assembled Gd0.1Ce0.9O1.95-BaGd0.8La0.2Co2O6‒δ nanocomposite cathode for efficient protonic ceramic fuel cells Scopus
期刊论文 | 2024 , 50 (13) , 22574-22582 | Ceramics International
碱水电解用NiPOH-RuO2催化电极的析氢析氧反应研究
期刊论文 | 2024 , 46 (12) , 10-18 | 电镀与精饰
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电解水制氢用电极材料对析氢和析氧反应起着重要的作用.羟基亚磷酸镍(Ni11(HPO3)8(OH)6,缩写为NiPOH)具有多孔结构和丰富的活性中心备受关注,然而其低电导率以及相应的缓慢电子转移速率限制了其电催化性能.添加高导电性和活性物质提升电子传输效率和反应动力学,有望增强其在电解水过程中的催化活性与持久性.本文采用水热法在泡沫镍上原位生长NiPOH-x at.%RuO2电极材料,采用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、线性扫描伏安法(LSV)和计时电位法(CP)等研究RuO2含量对电极微观形貌及其电化学性能的影响,辅以第一性原理计算探讨NiPOH-x at.%RuO2在全解水过程中的性能.结果表明:添加RuO2可改变NiPOH微球的形貌,使其具有更大比表面积.Ni元素是由Ni2+和Ni3+组成,Ru由Ru3+和Ru4+组成.Ru掺杂使NiPOH的电子转移能垒降低,费米能级附近电子密度增大.当电流密度为10 mA/cm2时,RuO2的加入明显降低了析氢过电位,NiPOH-3 at.%RuO2的析氢过电位最低为93mV,而NiPOH电极为161mV,NiPOH-3 at.%RuO2电极的析氧Tafel斜率同期达到最小.NiPOH-x at.%RuO2电极的析氢过程是以Heyrovsky步骤为主的Volmer-Heyrovsky控制反应.

Keyword :

Ni11(HPO3)8(OH)6 Ni11(HPO3)8(OH)6 RuO2 RuO2 析氢反应 析氢反应 析氧反应 析氧反应 电解水 电解水 第一性原理计算 第一性原理计算

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GB/T 7714 李勇 , 朱思达 , 赵坤 et al. 碱水电解用NiPOH-RuO2催化电极的析氢析氧反应研究 [J]. | 电镀与精饰 , 2024 , 46 (12) : 10-18 .
MLA 李勇 et al. "碱水电解用NiPOH-RuO2催化电极的析氢析氧反应研究" . | 电镀与精饰 46 . 12 (2024) : 10-18 .
APA 李勇 , 朱思达 , 赵坤 , 邵艳群 . 碱水电解用NiPOH-RuO2催化电极的析氢析氧反应研究 . | 电镀与精饰 , 2024 , 46 (12) , 10-18 .
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High-performance, stable buffer-layer-free La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte-supported solid oxide cell with a nanostructured nickel-based hydrogen electrode SCIE
期刊论文 | 2024 , 346 | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
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La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) with an extraordinary oxygen-ion conductivity has been extensively studied as an electrolyte material for intermediate temperature solid oxide cells (SOCs). However, the conventional hightemperature sintering process of electrodes results in detrimental reaction between LSGM and Ni-based hydrogen electrode and microstructural coarsening of the electrode. Herein, a buffer-layer-free LSGM electrolyte-supported single cell with a nanostructured Ni-Gd0.1Ce0.9O1.95 (GDC) electrode is developed using a sintering-free fabrication approach. The cell exhibits a peak power density of 1.23 W cm-2 at 800 degrees C and an electrolysis current density of 1.85 A cm-2 at 1.5 V with excellent operating stability. The good performance and durability is owing to the synergistic effects of the elimination of elemental interdiffusion at the electrode/ electrolyte interface, polarization induced in situ formation of hetero-interfaces between Ni-GDC and LSGM, and remarkable structural stability of Ni-GDC. This study provides an innovative means for the development of efficient and durable buffer-layer-free LSGM-supported SOCs.

Keyword :

Buffer -layer -free Buffer -layer -free Elemental interdiffusion Elemental interdiffusion Interface formation Interface formation Nanostructure Nanostructure Sintering -free Sintering -free

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GB/T 7714 Qian, Jiaqi , Lin, Changgen , Chen, Zhiyi et al. High-performance, stable buffer-layer-free La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte-supported solid oxide cell with a nanostructured nickel-based hydrogen electrode [J]. | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 346 .
MLA Qian, Jiaqi et al. "High-performance, stable buffer-layer-free La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte-supported solid oxide cell with a nanostructured nickel-based hydrogen electrode" . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 346 (2024) .
APA Qian, Jiaqi , Lin, Changgen , Chen, Zhiyi , Huang, Jiongyuan , Ai, Na , Jiang, San Ping et al. High-performance, stable buffer-layer-free La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte-supported solid oxide cell with a nanostructured nickel-based hydrogen electrode . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 346 .
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High-performance, stable buffer-layer-free La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte-supported solid oxide cell with a nanostructured nickel-based hydrogen electrode Scopus
期刊论文 | 2024 , 346 | Applied Catalysis B: Environmental
ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors SCIE
期刊论文 | 2024 , 39 | MATERIALS TODAY COMMUNICATIONS
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Transition metal sulfides are used in the field of supercapacitors due to their remarkable electrical conductivity and superior energy density. However, few research has been conducted on how the sulfidation process affects the structure and electrochemical properties of electrodes. The nanoneedle array Zn-Mn-Co sulfide (ZMC-S/NF) electrode is prepared by directly growing on nickel foam (NF) via a two-step hydrothermal technique. During the first step, the Zn-Mn-Co carbonate hydroxide nanoneedle skeleton can be obtained. During the second step, the nanoneedle skeletons are etched, and rough nanoneedle arrays are created by the introduced sulfur ions,i.e., the sulfidation process. The ZMC-S/NF electrode exhibits a specific capacity of 1401.0 C g-1 at 2 A g-1. It still has excellent rate performance with a specific capacity of 1015.3 C g-1 at 20 A g-1. Moreover, it exhibits excellent cycling stability with 81.9% capacity retention after 10,000 cycles. ZMC-S/NF as the cathode and activated carbon (AC) as the anode are assembled to be a hybrid supercapacitor (HSC), which has an energy density of 43.4 Wh kg-1 at a power density of 700.4 W kg-1. The effect of adding Zn and Mn to the Co3S4 on energy band structure and density of states during the sulfidation process is calculated by the DFT. The HSC devices constructed by two series-connected ZMC-S/NF//AC can light a star made by ten 1.8 V-red Light Emitting Diodes (LEDs) for 10 minutes.

Keyword :

Density functional theory Density functional theory Hybrid supercapacitors Hybrid supercapacitors Sulfidation Sulfidation ZnMnCo-S ZnMnCo-S

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GB/T 7714 Wang, Hongtao , Zhao, Kun , Shao, Yanqun et al. ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 .
MLA Wang, Hongtao et al. "ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors" . | MATERIALS TODAY COMMUNICATIONS 39 (2024) .
APA Wang, Hongtao , Zhao, Kun , Shao, Yanqun , Xiao, Shengtao , Yang, Zhiguang , Chen, Zhe et al. ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors . | MATERIALS TODAY COMMUNICATIONS , 2024 , 39 .
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ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors EI
期刊论文 | 2024 , 39 | Materials Today Communications
ZnMnCo-S nanoneedle arrays as battery-type eletrodes for high-performance hybrid supercapacitors Scopus
期刊论文 | 2024 , 39 | Materials Today Communications
Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3-δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells SCIE
期刊论文 | 2024 , 50 (22) , 46822-46830 | CERAMICS INTERNATIONAL
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Perovskite oxide Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) is a highly active cathode material widely studied for intermediate temperature solid oxide fuel cells (IT-SOFCs), however, the tendency of phase transition of BSCF under IT-SOFC operating conditions poses a critical challenge for its reliable applications. Here, a multiphase BSCFGd0.1Ce0.9O1.95 (GDC) nanocomposite with heterogeneous interfaces is synthesized at a relatively low calcination temperature of 750 degrees C. Both the multiphase composition and microstructural morphology of the nanocomposite are very stable during annealing at 750 degrees C. The unique multiphase structure and ultrafine microstructure of the nanocomposite can be maintained in the resultant cathode through a sintering-free direct assembly fabrication method. As a consequence, a corresponding single cell based on the BSCF-GDC nanocomposite cathode generates a maximum power density of 1.41 W cm(-2) at 750 degrees C with outstanding galvanostatic stability for 100 h. This work provides an effective means for the design and utilization of highly active BSCF-based nanocomposite cathodes for durable IT-SOFCs.

Keyword :

BSCF BSCF Phase transition Phase transition Sintering-free direct assembly Sintering-free direct assembly Solid oxide fuel cells Solid oxide fuel cells

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GB/T 7714 Chen, Kongfa , Yang, Haoran , Chen, Zhiyi et al. Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3-δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells [J]. | CERAMICS INTERNATIONAL , 2024 , 50 (22) : 46822-46830 .
MLA Chen, Kongfa et al. "Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3-δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells" . | CERAMICS INTERNATIONAL 50 . 22 (2024) : 46822-46830 .
APA Chen, Kongfa , Yang, Haoran , Chen, Zhiyi , Huang, Jiongyuan , Qian, Jiaqi , Yue, Zhongwei et al. Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3-δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells . | CERAMICS INTERNATIONAL , 2024 , 50 (22) , 46822-46830 .
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Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3‒δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells EI
期刊论文 | 2024 , 50 (22) , 46822-46830 | Ceramics International
Enabling stable operation of Ba0.5Sr0.5Co0.8Fe0.2O3‒δ based multiphase nanocomposite cathode for efficient intermedium temperature solid oxide fuel cells Scopus
期刊论文 | 2024 , 50 (22) , 46822-46830 | Ceramics International
Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells SCIE
期刊论文 | 2024 , 44 (6) , 3818-3823 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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Abstract :

Perovskite oxide La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) is an intermedium-temperature solid oxide cell electrolyte material with extraordinary oxygen-ion conductivity. However, the manufacturing procedures of LSGM discs are complex involving multiple steps of powder preparation, forming, and sintering at high temperatures. Herein, thin LSGM electrolyte discs are prepared by coupling of tape casting and in situ solid-state reaction using oxides/carbonates as the feedstock. A pure-phase LSGM electrolyte disc with uniform elemental distribution is obtained by sintering at 1450 degrees C, and it possesses an ionic conductivity of 0.105 S cm(1) at 800 degrees C, a thermal expansion coefficient of 12.2 x 10(6) K-1, and a bending strength of 156 MPa A 170 mu m thick LSGM electrolyte-supported single cell delivers a peak power density of 0.96 W cm(2) at 800 degrees C and an electrolysis current density of 1.82 A cm(2) at 1.5 V with no noticeable degradation for 200 h. The findings of this research provide a cost-effective approach for manufacturing the LSGM electrolytes of efficient and durable solid oxide cells.

Keyword :

Electrolyte-support Electrolyte-support LSGM LSGM Solid oxide cells Solid oxide cells Solid-state reaction Solid-state reaction Tape casting Tape casting

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GB/T 7714 Lin, Changgen , Zhang, Yongmei , Qian, Jiaqi et al. Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (6) : 3818-3823 .
MLA Lin, Changgen et al. "Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 44 . 6 (2024) : 3818-3823 .
APA Lin, Changgen , Zhang, Yongmei , Qian, Jiaqi , Chen, Zhiyi , Huang, Jiongyuan , Ai, Na et al. Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2024 , 44 (6) , 3818-3823 .
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Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells Scopus
期刊论文 | 2024 , 44 (6) , 3818-3823 | Journal of the European Ceramic Society
Coupling of tape casting and in situ solid-state reaction for manufacturing La0.9Sr0.1Ga0.8Mg0.2O3 electrolyte of efficient solid oxide cells EI
期刊论文 | 2024 , 44 (6) , 3818-3823 | Journal of the European Ceramic Society
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