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International Journal of Extreme Manufacturing 2023年第1期5卷 345-353页

作者： Seo Ju Kim Deokyoon Woo Donguk Kim Tae Kyeong Lee Jaeyeob Lee Wonyoung Lee School of Mechanical Engineering Sungkyunkwan UniversitySuwonKyunggi-do 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Sluggish oxygen reduction reaction(ORR)kinetics are a major obstacle to developing intermediate-temperature solid-oxide fuel cells(IT-SOFCs).In particular,engineering the anion defect concentration at an interface between the cathode and electrolyte is important for facilitating ORR kinetics and hence improving the electrochemical *** developed the yttria-stabilized zirconia(YSZ)nanofiber(NF)-based composite cathode,where the oxygen vacancy concentration is controlled by varying the dopant cation(Y2O3)ratio in the YSZ *** composite cathode with the optimized oxygen vacancy concentration exhibits maximum power densities of 2.66 and 1.51 W cm^(−2)at 700 and 600℃,respectively,with excellent thermal stability at 700℃ over 500 h under 1.0 A cm^(−2).Electrochemical impedance spectroscopy and distribution of relaxation time analysis revealed that the high oxygen vacancy concentration in the NF-based scaffold facilitates the charge transfer and incorporation reaction occurred at the interfaces between the cathode and *** results demonstrate the high feasibility and potential of interface engineering for achieving IT-SOFCs with higher performance and stability.

关键词： solid oxide fuel cells nanofiber infiltration oxygen reduction reactions oxygen vacancy

Progress and challenges of carbon-fueled solid oxide fuel cells anode

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Journal of Energy Chemistry 2021年第5期30卷 209-222页

作者： Minjian Ma Xiaoxia Yang Jinshuo Qiao Wang Sun Zhenhua Wang Kening Sun Beijing Key Laboratory for Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

Carbon-fueled solid oxide fuel cells(CF-SOFCs)can electrochemically convert the chemical energy in carbon into electricity,which demonstrate both superior electrical efficiency and fuel utilisation compared to all other types of fuel ***,using solid carbon as the fuel of SOFCs also faces some challenges,the fluid mobility and reactive activity of carbon-based fuels are much lower than those of gaseous ***,the anode reaction kinetics plays a crucial role in determining the electrochemical performance of ***,the progress of various anodes in CF-SOFCs is reviewed from the perspective of material compositions,electrochemical performance and *** faced in developing high performance anodes for CF-SOFCs are also discussed.

关键词： Carbon Anodes solid oxide fuel cells Energy conversion Reaction processes

Low molecular weight alkane-fed solid oxide fuel cells for power and chemicals cogeneration

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Journal of Energy Chemistry 2023年第5期80卷 711-735,I0015页

作者： Ermete Antolini Scuola di Scienza dei Materiali Cogoleto 16016GenovaItaly

This paper presents a review of low molecular weight alkane-fed solid oxide fuel cells(SOFCs),which,unlikely the conventional use of SOFCs for only power production,are utilized to cogenerate produce useful chemicals at the same *** cogeneration processes in SOFC have been classified according to the different types of fuel.C_(2)and C_(3)alkenes and synthesis gas are the main cogenerated chemicals together with *** chemicals and energy cogeneration in a fuel cell reactor seems to be an effective alternative to conventional reactors for only chemicals production and conventional fuel cells for only power ***,the use of SOFCs for chemicals and energy cogeneration has proved successful in the industrial setting,the development of new catalysts aimed at obtaining the desired chemicals together with the production of a high amount of energy,and optimizing SOFC operation conditions is still a challenge to enhance system performance and make commercial applications workable.

关键词： solid oxide fuel cells Alkane Alkene Syngas Cogeneration

Activating and stabilizing the surface of anode for high-performing direct-ammonia solid oxide fuel cells

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Nano Research 2023年第2期16卷 2454-2462页

作者： Kang Xu Feng Zhu Mingyang Hou Canan Li Hua Zhang Yu Chen School of Environment and Energy South China University of TechnologyGuangzhou 510006China

Ammonia has been recognized as a promising fuel for solid oxide fuel cells(SOFCs)because of its relatively high hydrogen content and high energy ***,the effective catalysis of ammonia on the surface of state-of-the-art anode greatly hinders the further development of direct ammonia *** this study,we report our findings of surface activating and stabilizing of a Ni-based cermet anode for highly efficient and durable operation on ammonia fuel,achieved by a surface coating of CeO_(2)−δnanoparticles(NPs).When incorporated into a Ni-yttria-stabilized zirconia(Ni-YSZ)anode-supported single cell,the coatings demonstrate an improved electrochemical reaction activity and stability,achieving a high peak power density of 0.941 W·cm^(−2)at 700℃,and a promising stability of~60 h(degradation rate of 0.127%h^(−1)at 0.5 A·cm−2),much better than those of cells with a bare anode(~0.673 W·cm^(−2)and degradation rate of 0.294%h−1 at 0.5 A·cm^(-2)).The catalytic NPs significantly enhance the reaction activity toward the decomposition of ammonia and oxidation of hydrogen,especially at low temperatures(cells on NH3 fuel.

关键词： solid oxide fuel cells anode catalyst infiltration ammonia

Applications and recent advances of rare earth in solid oxide fuel cells

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Journal of Rare Earths 2022年第11期40卷 1668-1681,I0001页

作者： Qi Wang Hui Fan Yanfei Xiao Yihe Zhang Bejing Key Laboratory of Materials Utilization of Nonmetallic Minerals and solid Wastes and School of Materials Science and Technology China University of Geosciences BeijingBejing100083China School of Metallurgy and Chemistry Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

solid oxide fuel cells(SOFCs)are an all-solid energy conversion device from the chemical energy of fuels to electric energy at intermediate and high *** to now,massive efforts have been made in developing different components of solid oxide fuel cells,including electrolyte,anode,cathode and interconnect *** earth elements play an indispensable role in different components of SOFCs which have been extensively studied in the recent *** this review,we concentrate upon the rare earth application and recent advances in SOFCs and related *** structure involves perovskites,Ruddlesden-Popper,fluorite,spinel,pyrochlore,apatite and so ***,the effects of rare earth based oxides as matrix or dopants in different components are also *** and properties of the materials are related to the element type,valence,coordination and ion *** article will provide a comprehensive research direction towards SOFCs components for their composition,structural design and mechanisms research.

关键词： solid oxide fuel cells Rare earths Anode Electrolyte Cathode Interconnect materials

Microwave synthesis of La_(1-x)Sr_xCo_(1-y)Fe_yO_3 cathode materials for solid oxide fuel cells

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Rare Metals 2010年第6期29卷 576-578页

作者： ZHAI Xiujing,SHI Weixi,FU Yan,and ZHANG Nan School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China School of Materials & Metallurgy Northeastern University Shenyang China

La1-xSrxCo1-yFeyO3 cathode materials for solid oxide fuel cells were prepared by the microwave synthesis *** reaction mechanism was studied using a thermal analysis *** influences of microwave synthesis conditions were examined and the characteristics of the samples were determined by X-ray diffraction and scanning electron *** was found that the optimum conditions were the microwave power of 800 W and the reaction time of 40 *** with perosvkite-type crystal structure were *** samples consist of uniformly distributed internal particles and the particle size is less than 1 μm.

关键词： solid oxide fuel cells cathode materials microwave synthesis thermal analysis microstructure

Fabrication and performance of atmospheric plasma sprayed solid oxide fuel cells with liquid antimony anodes

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International Journal of Coal Science & Technology 2021年第3期8卷 360-367页

作者： Yidong Jiang Wenfei Mo Tianyu Cao Yixiang Shi Ningsheng Cai Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Chemical and Biomolecular Engineering University of PennsylvaniaPhiladelphiaPA 19104USA

A solid oxide fuel cell(SOFC)with a liquid antimony anode(LAA)is a potential energy conversion technology for the use of impurity-containing *** plasma spraying(APS)technology has become a promising LAASOFC preparation method because of its economy and *** this paper,button SOFCs with different cathode materials and ratios of pore former were prepared by the APS method and were operated at 750*** effect of the cathode structure on the electrochemical performance of the LAA-SOFCs was analyzed,and an optimized spraying method for LAA-SOFCs was developed.A tubular LAA-SOFC was prepared using the APS method based on the optimized spraying method,and a peak power of 2.5 W was *** tubular cell was also measured at a constant current of 2 A for 20 h and was fed with a sulfur-containing fuel to demonstrate its impurity resistance and electrode stability.

关键词： solid oxide fuel cells Liquid antimony anodes Atmospheric plasma spraying Pore former

High temperature thermo-photocatalysis driven carbon removal in direct biogas fueled solid oxide fuel cells

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Chinese Chemical Letters 2021年第11期32卷 3548-3552页

作者： Doudou Gu Guan Zhang Jing Zou Institute of Hydrogen and fuel Cell Harbin Institute of TechnologyShenzhenShenzhen 518055China General Education Division School of Humanities Social ScienceThe Chinese University of Hong KongShenzhenShenzhen 518172China School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhenShenzhen 518055China

solid oxide fuel cells(SOFCs)can directly convert renewable biogas into electricity with high efficiency at high temperature,however the long-term stability of SOFCs is significantly affected by the carbon deposition on the anode during cell ***,we report a novel carbon removal approach by high temperature infrared light driven photocatalytic *** the comparison of electrochemical performance of Ni-YSZ anode and TiO_(2)modified Ni-YSZ anode in the state-of-the-art single cell(Ni-YSZ/YSZ/LSCM),the modified anodes exhibit markedly improved peak powder density with simulated biogas fuel(70%CH_(4)+30%CO_(2))at 850℃with less coking after 40 h *** high activity and carbon deposition resistance of the modified anode is possibly attributed to the in situ generated hydroxyl radical from the reduced TiO_(x)powder under high temperature infrared light excitation,which is supported by detailed analysis of microstructural information of anodes and the powder-based thermo-photocatalytic experiments.

关键词： Thermo-photocatalysis Infrared light excitation Carbon removal Biogas utilization solid oxide fuel cells

Sn and Y co-doped BaCo_(0.6)Fe_(0.4)O_(3)-δcathodes with enhanced oxygen reduction activity and CO_(2) tolerance for solid oxide fuel cells

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Chinese Chemical Letters 2022年第5期33卷 2658-2662页

作者： Nan Han Rongzheng Ren Minjian Ma Chunming Xu Jinshuo Qiao Wang Sun Kening Sun Zhenhua Wang Beijing Key Laboratory for Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

Applying mixed oxygen ionic and electronic conducting(MIEC)oxides as the cathode offers a promis-ing solution to enhance the performance of solid oxide fuel cells(SOFCs).However,the phase instability in CO_(2)-containing air and sluggish oxygen reduction activity of MIEC cathodes remain a long-term chal-lenge for optimizing the electrochemical performance of ***,a heterovalent co-doping strategy is proposed to enhance the oxygen reduction activity and CO_(2)tolerance of SOFCs cathodes,which can be demonstrated by developing a novel BaCo_(0.6)Fe_(0.4)O_(3)-δ(BCF)-based MIEC oxide,BaCo_(0.6)Fe_(0.2)Sn_(0.1) Y_(0.1)O_(3-δ)(BCFSY).In addition to improving the stability of BCF-based perovskites,this strategy achieves an opti-mized balance of ionic mobility and oxygen vacancies due to the synergies between the effects of the *** with single-doped materials,BCFSY exhibits improved CO_(2)tolerance and consider-ably higher ORR activity,which is reflected in a significantly lower polarization resistance of 0.15Ωcm^(2) at 600℃.The results of this work provide an efficient tactic for designing electrode materials for SOFCs.

关键词： solid oxide fuel cells Cathode Heterovalent co-doping Oxygen ion conduction Oxygen vacancy formation

Overcoming a recent impasse in the application of artificial neural networks as solid oxide fuel cells simulator with computational topology

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Energy and AI 2023年第4期14卷 451-462页

作者： Grzegorz Brus AGH University of Krakow Faculty of Energy and FuelsDepartment of Fundamental Research in Energy Engineering30 Mickiewicza Ave.30059 KrakowPoland

In recent years,the solid oxide fuel cell(SOFC)scientific community has invested continuous efforts to employ artificial intelligence methods to design and develop new energy *** is crucial to gain a better understanding of the microscale phenomena that occur in the *** this review,we present a literature review of the field,discussing the limitations of including microstructural data in existing research and possible research directions to overcome *** review focuses on a particular research area that uses artificial neural networks(ANNs)to predict the performance of ***,we show that neural networks are used not only to conform to the newest trends but also for improving the design and providing a better understanding of microscale phenomena that occur in the *** review concludes by highlighting topological data analysis as a promising area of research that can incorporate detailed microstructure characterization in ANNs for performance prediction.

关键词： solid oxide fuel cells Artificial neural networks Mathematical modeling Topological data analysis