检索结果-南通市图书馆

Electrochemical performance and stability of Sr-doped LaMnO_(3)-infiltrated yttria stabilized zirconia oxygen electrode for reversible solid oxide fuel cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2014年第1期1卷 56-61页

作者： Hui Fan minfang han Union Research Center of Fuel Cell School of Chemical&Environment EngineeringChina University of Mining&Technology(Beijing)Beijing 100083China

Porous Sr-doped lanthanum manganite–yttria stabilized zirconia(LSM–YSZ)oxygen electrode is prepared by an infiltration process for a reversible solid oxide fuel cell(RSOFC).X-ray diffraction and SEM analysis display that perovskite phase LSM submicro particles are evenly distributed in the porous YSZ *** curves and electrochemical impedance spectra are conducted for the RSOFC at 800 and 850C under both SOFC and SOEC *** 850℃,the single cell has the maximum power density of~726 mW/cm^(2)under SOFC mode,and electrolysis voltage of 1.35 V at 1 A/cm^(2)under SOEC *** cell/water electrolysis cycle shows the cell has good performance stability during 6 cycles,which exhibits the LSM–YSZ oxygen electrode has high electrochemical performance and good *** results suggest that netw ork-like LSM–YSZ electrode made by infiltration process could be a promising oxygen electrode for high temperature RSOFCs.

关键词： Reversible solid oxide fuel cell Solid oxide electrolysis cell Infiltration Strontium-doped lanthanum manganite

Synthesis and characterization of Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3-σ)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2009年第1期28卷 39-42页

作者： WANG Qibao YUAN Yan han minfang ZHU Peiyu School of Chemical and Environmental Engineering China University of Mining and Technology （Beijing） Beijing 100083 China

Perovskite-type Ba0.5Sr0.5Co0.8Fe0.2O3-σ （BSCFO） powders were synthesized using two methods, solid-state reaction （SSR） method and citrate-EDTA complexing method （CC-EDTA）. Then the powders were pressed to green disks of 19 nun in diameter and sintered at 1140℃ for 5 h. The shrinkage rate and relative density of the membranes prepared from the perovskite-type powders were determined and calculated, and the powders and derived membranes were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The resuits show that the shrinkage rates of the two kinds of disks are nearly the same （about 10%）. The disks prepared by the SSR method had a bigger grain size and lower relative density than those prepared by the CC-EDTA method. The conductivity of the membranes prepared by the SSR method was about 38 S/cm, higher than that of the membranes prepared by the CC-EDTA method, which was about 30 S/cm, at the same temperature of600℃.

关键词： perovskite-type oxides oxide membrane solid-state reaction complexing method physical properties

Electrochemical property of multi-layer anode supported solid oxide fuel cell fabricated through sequential tape-casting and co-firing

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2019年第4期35卷 695-701页

作者： Xiaoyang Chen Weijie Ni Xiaojia Du Zaihong Sun Tenglong Zhu Qin Zhong minfang han School of Chemical Engineering Nanjing University of Science and Technology Suzhou Huatsing Jingkun New Energy Technology Co. Ltd. State Key Laboratory of Power Systems Department of Energy and Power EngineeringTsinghua University

In this work, a multi-layer anode supported solid oxide fuel cell(SOFC) is designed and successfully prepared through sequential tape casting and co-firing. The single cell is consisted of NiO-3 YSZ(3 YSZ: 3 mol.% yttria doped zirconia) anode support, NiO-8 YSZ(8 YSZ: 8 mol.% yttria stabilized zirconia) anode functional layer, dense 8 YSZ electrolyte layer, and porous 3 YSZ cathode scaffold layer with infiltrated La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-δ) cathode. The clear interfaces and good contacts between each layer, without element inter-diffusion being observed, suggest that this sequential tape casting and co-firing is a feasible and successful route for anode supported single cell fabrication. This cell exhibits remarkable high open circuit voltage of 1.097 V at 800?C under room temperature humidified hydrogen, with highly dense and gastight electrolyte layer. It provides a power density of 360 mW/cm^2 under operation voltage of0.75 V at 800?C and a stable operation of ～110 h at 750?C under current density of-300 mA/cm^2. Furthermore, this cell also presents encouraging electrochemical responses under various anode hydrogen partial pressures and maintains high power output at low fuel concentrations.

关键词： Anode supported SOFC Sequential tape casting Co-firing Cathode infiltration

Effects of operating conditions on the performance degradation and anode microstructure evolution of anode-supported solid oxide fuel cells

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1181-1189页

作者： Xin Yang Zhihong Du Qian Zhang Zewei Lyu Shixue Liu Zhijing Liu minfang han Hailei Zhao School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Municipal Key Lab for Advanced Energy Materials and Technologies Beijing 100083China Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084China Shenzhen Engineering Research Center for Hydrogen Safety China Nuclear Power Technology Research InstituteShenzhen 518031China

Performance degradation shortens the life of solid oxide fuel cells in practical *** the degradation mechanism is crucial for the continuous improvement of cell *** this work,the effects of cell operating conditions on the terminal voltage and anode microstructure of a Ni-yttria-stabilized zirconia anode-supported single cell were *** microstructure of the anode active area near the electrolyte was characterized by laser optical microscopy and focused ion beam-scanning electron *** depletion at the anode/electrolyte interface region was observed after 100 h discharge *** addition,the long-term stability of the single cell was evaluated at 700℃for 3000 *** an initial decline,the anode-supported single cell exhibits good durability with a voltage decay rate of 0.72%/kh and an electrode polarization resistance decay rate of 0.17%/*** main performance loss of the cell originates from the initial degradation.

关键词： solid oxide fuel cell Ni-YSZ anode focused ion beam Ni migration electrochemical performance

Prediction of fuel cell performance degradation using a combined approach of machine learning and impedance spectroscopy

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第12期87卷 32-41,I0003页

作者： Zewei Lyu Yige Wang Anna Sciazko hangyue Li Yosuke Komatsu Zaihong Sun Kaihua Sun Naoki Shikazono minfang han Institute of Industrial Science The University of TokyoTokyo 153-8505Japan Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084China Xuzhou Huatsing Jingkun Energy Co. Ltd.Xuzhou 221005JiangsuChina

Accurate prediction of performance degradation in complex systems such as solid oxide fuel cells is crucial for expediting technological ***,significant challenges still persist due to limited comprehension of degradation mechanisms and difficulties in acquiring in-situ *** this study,we propose an effective approach that integrates long short-term memory(LSTM) neural network and dynamic electrochemical impedance spectroscopy(DEIS).This integrated approach enables precise prediction of future evolutions in both current-voltage and EIS features using historical testing data,without prior knowledge of degradation *** short-term predictions spanning hundreds of hours,our approach achieves a prediction accuracy exceeding 0.99,showcasing promising prospects for diagnostic ***,for long-term predictions spanning thousands of hours,we quantitatively determine the significance of each degradation mechanism,which is crucial for enhancing cell ***,our proposed approach demonstrates satisfactory predictive ability in both time and frequency domains,offering the potential to reduce EIS testing time by more than half.

关键词： Solid oxide fuel cell Performance degradation Electrochemical impedance spectroscopy Longshort-term memory Machine learning

Performance and stability analysis of SOFC containing thin and dense gadolinium-doped ceria interlayer sintered at low temperature

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2022年第2期8卷 347-357页

作者： Yige Wang Chuan Jia Zewei Lyu minfang han Junwei Wu Zaihong Sun Fumitada Iguchi Keiji Yashiro Tatsuya Kawada Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China Department of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen518055China Suzhou Huatsing Jingkun New Energy Technology Co.Ltd Jiangsu215314China Tohoku University Sendai 980-8579Japan

Gadolinium-doped ceria(GDC)interlayers are required to prevent the interfacial reaction between La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)cathode and Y_(2)O_(3)-stabilized ZrO 2(YSZ)electrolyte in solid oxide fuel cells(SOFCs).However,it's difficult to prepare a thin and dense GDC interlayer on the sintered half-cell at a low *** this study,the physical vapor deposition(PVD)method was employed to success-fully manufacture dense GDC interlayers with the thickness of 1 m *** influences of GDC sintering temperature(900℃,1000℃ and 1100℃)on cell performance characteristics and degradation behavior were *** cell with GDC interlayer sintered at 1100?C showed the lowest degradation rate during the 216-h *** best stability was attributed to the most effective inhibition of Sr diffusion by the GDC interlayer,which was demonstrated by the almost unchanged Ohmic and polari-zation resistances during the aging stage and the negligible Sr enrichment at YSZ/GDC *** to the conventional screen-printed GDC interlayers(sintered above 1250℃),the GDC inter-layer prepared by the PVD method and sintered at 1100℃ was significantly denser and thinner,showing a promising application prospect due to its benefits for cell stability.

关键词： Solid oxide fuel cell Gadolinium-doped ceria Interlayer Sr diffusion Stability analysis

H_2O/CO_2 co-electrolysis in solid oxide electrolysis cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering Sciences 2014年第1期12卷 43-50页

作者： han minfang Fan Hui Peng Suping Union Research Center of Fuel Cell School of Chemical & Environmental EngineeringChina University of Mining & Technology

A solid oxide electrolysis cell(SOEC) is an environmental-friendly device which can convert electric energy into chemical energy with high efficiency. In this paper,the progress on structure and operational principle of an SOEC for co-electrolyzing H2O and CO2to generate syngas was reviewed. The recent development of high temperature H2O/CO2co-electrolysis from solid oxide single electrolysis cell was introduced. Also investigated was H2O/CO2co-electrolysis research using hydrogen electrode-supported nickel(Ni)-yttria-stabilized zirconia(YSZ)/YSZ/Sr-doped LaMnO3(LSM)-YSZ cells in our group. With 50 % H2O,15.6 % H2and 34.4 % CO2inlet gas to Ni- YSZ electrode,polarization curves(I- U curves) and electrochemical impedance spectra(EIS) were measured at 800 ℃ and 900 ℃. Long-term durability of electrolysis was carried out with the same inlet gas at 900 ℃ and 0.2 A/cm2. In addition,the improvement of structure and development of novel materials for increasing the electrolysis efficiency of SOECs were put forward as well.

关键词： SOEC H2O/CO2 co-electrolysis syngas electrolysis efficiency H2O electrolysis

Solid oxide fuel cell:materials,technology and application

在线全文

学校读者我要写书评

暂无评论

Engineering Sciences 2010年第1期8卷 32-35页

作者： han minfang Liu Ze Zhou Su Peng Suping Union Research Center of Fuel Cell School of Chemical ＆ Environment Engineering China University of Mining ＆ Technology（Beijing） Beijing 100083 China

Solid oxide fuel cells (SOFCs) offer a clean, pollution-free technology for the electrochemical conversion of chemical energy of hydrocarbon fuels into electricity. Many programs are being initiated in the United States, Europe, Japan and so on. The funding for SOFC development worldwide has risen dramatically and this trend is expected to continue for at least the next decades. These development programs are also investigating wider applications of SOFCs in stationary, residential, transportation and military sectors. Finally, it is summarized the key materials and fabrication processes of SOFC in this paper.

关键词： SOFC materials fabrication processes application

在线全文

学校读者我要写书评

暂无评论

固体氧化物燃料电池中的陶瓷材料

硅酸盐学报 2017年第11期45卷 1548-1554页

作者：韩敏芳张永亮清华大学热能工程系电力系统及发电设备控制和仿真国家重点实验室清华东莞创新中心

固体氧化物燃料电池(SOFC)也称为陶瓷燃料电池,其关键组成电解质、阴极和阳极均为陶瓷氧化物材料。致密电解质薄膜材料是核心,主要是(纯)氧离子导体,其电导率依赖于氧化物中的氧离子空位传导,氧空位主要来源于氧化物中低价金属离子掺杂... 详细信息

固体氧化物燃料电池(SOFC)也称为陶瓷燃料电池,其关键组成电解质、阴极和阳极均为陶瓷氧化物材料。致密电解质薄膜材料是核心,主要是(纯)氧离子导体,其电导率依赖于氧化物中的氧离子空位传导,氧空位主要来源于氧化物中低价金属离子掺杂;工业上主要使用萤石结构YO掺杂的ZrO(YSZ)和ScO掺杂的ZrO(ScSZ),更高氧离子电导率的材料包括掺杂的CeO、δ-BiO和掺杂的LaGaO钙钛矿材料,有望在中低温下使用。电极都是多孔陶瓷材料,同时具有氧离子传导和电子传导性能。工业上阳极主要采用Ni-YSZ多孔金属陶瓷,具有混合离子电子导电性(MIEC)的钙钛矿材料是现在的研究热点。工业上阴极材料主要是掺杂LaMnO和YSZ复合陶瓷,在高温下具有良好的电化学性能和稳定性;中高温范围内被认可的材料是掺杂LaFeO基钙钛矿材料,以LaSrCoFeO-δ为代表,具有良好的电化学活性和稳定性;优化材料组分和结构仍然是阴极材料的研究重点,也是SOFC领域必须突破的重要方向。

关键词：固体氧化物燃料电池氧离子导体混合离子电子导体金属陶瓷阳极钙钛矿电极