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Key technology and application of AB_(2) hydrogen storage alloy in fuel cell hydrogen supply system

Materials Reports(Energy) 2024年第1期4卷 113-122页

作者： Ming Yao Jianguang Yuan Bao Zhang Youhua Yan shaoxiong zhou Ying Wu School of Energy Power and Machinery Engineering North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China Institute of Energy Power Innovation North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China Jiangsu JITRI Advanced Energy&Materials Research Institute Co. LtdNo.5 ChongyinanluXinbei DistrictChangzhou 213000China

At present,there is limited research on the application of fuel cell power generation system technology using solid hydrogen storage materials,especially in hydrogen-assisted two-wheelers.Considering the disadvantages of low hydrogen storage capacity and poor kinetics of hydrogen storage materials,our primary focus is to achieve smooth hydrogen ab-/desorption over a wide temperature range to meet the requirements of fuel cells and their integrated power generation systems.In this paper,the Ti_(0.9)Zr_(0.1)Mn_(1.45)V_(0.4)Fe_(0.15) hydrogen storage alloy was successfully prepared by arc melting.The maximum hydrogen storage capacity reaches 1.89 wt% at 318 K.The alloy has the capability to absorb 90% of hydrogen storage capacity within 50 s at 7 MPa and release 90% of hydrogen within 220 s.Comsol Multiphysics 6.0 software was used to simulate the hydrogen ab-/desorption processes of the tank.The flow rate of cooling water during hydrogen absorption varied in a gradient of(0.02 t x)m s^(-1)(x=0,0.02,0.04,0.06,0.08,0.1,0.12).Cooling water flow rate is positively correlated with the hydrogen absorption rate but negatively correlated with the cost.When the cooling rate is 0.06 m s^(-1),both simulation and experimentation have shown that the hydrogen storage tank is capable of steady hydrogen desorption for over 6 h at a flow rate of 2 L min^(-1).Based on the above conclusions,we have successfully developed a hydrogen-assisted two-wheeler with a range of 80 km and achieved regional demonstration operations in Changzhou and Shaoguan.This paper highlights the achievements of our team in the technological development of fuel cell power generation systems using solid hydrogen storage materials as hydrogen storage carriers and their application in twowheelers in recent years.

关键词： AB_(2)hydrogen storage alloy Hydrogen storage tanks Simulation Hydrogen-electric coupling system Power-assisted two-wheelers

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The Nanoscale Density Gradient as a Structural Stabilizer for Glass Formation

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Engineering 2023年第10期29卷 120-129页

作者： shaoxiong zhou Bangshao Dong Yanguo Wang Jingyu Qin Weihua Wang China Iron and Steel Research Institute Group Beijing 100081China Institute of Advanced Materials North China Electric Power UniversityBeijing 102206China Jiangsu JITRI Advanced Energy and Materials Research Institute Changzhou 213032China Beijing National Laboratory of Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan 250061China

The rapid cooling of a metallic liquid(ML)results in short-range order(SRO)among the atomic arrangements and a disordered structure in the resulting metallic glass(MG).These phenomena cause various possible features in the microscopic structure of the MG,presenting a puzzle about the nature of the MGs’microscopic structure beyond SRO.In this study,the nanoscale density gradient(NDG)originating from a sequential arrangement of clusters with different atomic packing densities(APDs),representing the medium-range structural heterogeneity in Zr_(60)Cu_(30)Al_(10)MG,was characterized using electron tomography(ET)combined with image simulations based on structure modeling.The coarse polyhedrons with distinct facets identified in the three-dimensional images coincide with icosahedron-like clusters and represent the spatial positions of clusters with high APDs.Rearrangements of the different clusters according to descending APD order in the glass-forming process are responsible for the NDG that stabilizes both the supercooled ML and the amorphous states and acts as a hidden rule in the transition from ML to MG.

关键词： Rapid cooling Amorphous solid Density gradient Electron tomography Atomic clusters

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Hydrogen absorption-desorption characteristic of (Ti0.85Zr0.15)1.1Cr1-xMoxMn based alloys with C14 Laves phase

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Progress in Natural Science:Materials International 2022年第2期32卷 143-149页

作者： Youhua Yan Zhongyu Li Ying Wu shaoxiong zhou Jiangsu JITRI Advanced Energy & Materials Research Institute Co. Ltd. Advanced Materials Research Institute North China Electric Power University

The microstructure and hydrogen absorption-desorption characteristic of(Ti0.85Zr0.15)1.1Cr1-xMoxMn(x = 0.05,0.1,0.15,0.2 at.%) alloys were investigated.The results showed that the corresponding alloys were determined as a single phase of C14-type Laves structure.With the increase of Mo content,the maximum and reversible hydrogen absorption capacity decreased,the slope factor Hf increased.Among the studied alloys,(Ti0.85Zr0.15)1.1Cr0.95Mo0.05Mn had the best overall properties for practical application of hydrogen storage materials.The maximum and reversible hydrogen storage capacity were 1.76 wt% and 1.09 wt%,the slope factor Hfwas 0.51,and its dissociation enthalpy(ΔHd) and entropy change(ΔSd) were 23.1 kJ mol-1H2,93.8 J K-1mol-1 H2at 303 K,respectively.By studying the dissociation pressures of the synthesized metal hydrides,it was found that Mo had a special effect on the dissociation pressure of Ti-Zr-Cr-Mo-Mn alloys.Among the four alloys,(Ti0.85Zr0.15)1.1Cr0.95Mo0.05Mn alloy had the largest hydrogen absorption capacity and the fastest hydrogen desorption rate,which can meet the commercialization demand of hydrogen fuel cell hydrogen supply system.

关键词： Metal hydrides Ti–Zr–Cr–Mo–Mn based Alloys Laves phase Hydrogen storage properties

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加氢站氢压缩机用静态氢压缩材料研究进展

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稀有金属材料与工程 2024年第3期53卷 894-901页

作者：阎有花周少雄江苏集萃安泰创明先进能源材料研究院有限公司江苏常州213002 创明(韶关)绿色能源材料技术研究院有限公司广东韶关512000

加氢站是氢能产业建设的关键环节,氢压缩机是加氢站的核心关键单体设备之一,高密度安全氢压缩材料是加氢站氢压缩机大规模实用化的基础。本文综述了基于优势资源的高密度AB_(2)型储氢材料研究进展,指出了平台压高度匹配的静态氢压缩材料... 详细信息

加氢站是氢能产业建设的关键环节,氢压缩机是加氢站的核心关键单体设备之一,高密度安全氢压缩材料是加氢站氢压缩机大规模实用化的基础。本文综述了基于优势资源的高密度AB_(2)型储氢材料研究进展,指出了平台压高度匹配的静态氢压缩材料,低于100℃下初级、中级和终极放氢平衡压分别达25、45和85 MPa,满足长管拖车、Ⅲ型瓶乘用车和Ⅳ型瓶商用车应用需求。高效氢压缩材料的多级压力匹配,兼容现有加氢系统,促进加氢站氢压缩机工程化应用。

关键词：氢压缩机金属氢化物 Ti基AB_(2)型材料吸放氢平台压

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The influence of clusters in the melt of Fe80Si10B10 alloy on the subsequent glass-formation

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Progress in Natural Science:Materials International 2013年第5期23卷 216-219页

作者： Bangshao Dong shaoxiong zhou Jingyu Qin Shaopeng Pan Zhengbang Li China Iron & Steel Research Institute Group Advanced Technology & Materials Co. Ltd. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) Shandong University China Iron & Steel Research Institute Group

The structure of Fe80Si10B10 alloy melt was investigated by ab initio molecular dynamic simulation from the local atomic environments. It presents that Fe80Si10B10 alloy can be considered as the combination of B-centered prism-like clusters and bcc-like Fe-Si solid solution. The poor glass-forming ability of the alloy has been investigated and can be attributed to the bcc-like environment around Si atoms and the relative high content of pure Fe clusters.

关键词： Metallic glasses Alloy melt Clusters Liquid structure Glass-forming ability

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Preparation and properties of dental zirconia ceramics

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Journal of University of Science and Technology Beijing 2008年第6期15卷 764-768页

作者： Xinjie Liang Yuexiu Qiu shaoxiong zhou Xiaoyang Hu Guangyan Yu Xuliang Deng China Iron and Steel Research Institute Group Beijing 100081 China School and Hospital of Stornatology Peking University Beijing 100081 China

Y2O3-stabilized tetragonal zirconia polycrystalline （Y-TZP） ceramics with high-performance were prepared for dental ap- plication by use of the micro-emulsion and two-step sintering method. The crystal phase, morphology, and microstructure of the reaction products were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and transmission electron mi- croscopy （TEM）. XRD results show that the ceramics mainly consist of tetragonal zirconia. Physical and mechanical properties test results show that the bending strength, fracture toughness, and the density of full sintered Y-TZP ceramics are 1150 MPa, 5.53 MPa.m1/2, and 6.08 g/cm3, respectively, which suggest that the material is relatively suitable for dental restoration. The dental base crown machined with this material by CAD/CAM system exhibits a verisimilitude configuration and the material＇s expansion coefficient well matches that of the glaze. These results further indicate that the product can be used as a promising new ceramic material to fabricate dental base crowns and bridges.

关键词： zirconia ceramic crown property

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Abnormal corrosion behavior of dual-main phase sintered(Ce,Nd)-Fe-B magnets in different sodium solutions

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Journal of Rare Earths 2020年第7期38卷 735-741,I0002页

作者： Xiaoning Shi Minggang Zhu Xiangdong Wang shaoxiong zhou Xin Wang Meiling Zhang Wei Li Division of Functional Material Central Iron&Steel Research InstituteBeijing 100081China Advanced Technology&Materials Co. Ltd.Beijing 100081China

Sintered(Ce,Nd)-Fe-B magnets with high cost performance were prepared by substituting of Ce for Nd with the dual-main phase method.The corrosion behaviors of dual-main phase sintered(CexNd1-x)30Fe69B1(x=0.15 wt%,0.3 wt%) magnets,which were named as Ce15 and Ce30,were studied in 3.5 wt% NaCl,6.6 wt% Na2 SO4 and 3.0 wt% NaOH aqueous solutions,respectively.The galvanic corrosion of Ce30 is stronger than that of Ce15.However,the mass loss value of Ce30 is smaller than Ce15 after free corrosion for 33 d in NaCl solution.In the other two solutions,all the results show that the corrosion resistance of Ce30 is better than that of Ce15.The scanning electron microscope results show that the crack and shedding of the magnetic phase of Ce30 is less than that of Ce15.Combined above,the abnormal corrosion behavior shows that Ce30 magnets perform better corrosion resistance than Ce15,and the degradation degree of magnetic phase mainly affects the corrosion resistance of magnets.

关键词： Corrosion Dual main phases Sintered(Ce,Nd)-Fe-B Magnetic phase Crack Rare earths

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The improvement of surface quality and thickness stability of Fe78Si9B13 melt-spun ribbons by melt overheating

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Progress in Natural Science:Materials International 2019年第5期29卷 556-560页

作者： Hui Gao Zongzhen Li shaoxiong zhou Guangqiang Zhang Nairi Cui Central Iron & Steel Research Institute Advanced Technology & Materials Co Ltd Jiangsu JITRI Advanced Energy Materials Research Institute Co Ltd

The influence of melt overheating on the viscosity of the melt and surface quality of the Fe78Si9B13melt-spun ribbons have been studied by using oscillating vessel viscometry, X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy. A critical temperature Tc(about 1350℃) of the melt transformation was determined via viscosity measurements during overheating and subsequent cooling processes. The Fe78Si9B13amorphous ribbons were produced through planar flow melt spinning in the temperature range of 1300–1550℃. A detailed analysis of overheating effects on the melt viscosity and surface features of the as-spun ribbons were performed to rationalize the correlation between the melt state and surface quality of the ribbons. It was found that the enhanced homogeneity of the melt can be achieved by the overheating treatment higher than the critical temperature, which in turn improves the surface quality and thickness stability of the Fe78Si9B13melt-spun ribbons.

关键词： Amorphous alloys Planar flow melt spinning Overheating Viscosity

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The hidden disintegration of cluster heterogeneity in Fe-based glass-forming alloy melt

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Progress in Natural Science:Materials International 2018年第6期28卷 696-703页

作者： Bangshao Dong shaoxiong zhou Jingyu Qin Ying Li Hui Chen Yanguo Wang Advanced Technology & Materials Co. Ltd. Central Iron & Steel Research Institute Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) Shandong University Nanjing Tengyuan Soft Magnetics Co.Ltd.

The evolution of liquid metal at high temperature is known much less than their solid states. This is partially due to that the message concerning clusters, metastable phase or heterogeneity in liquid is usually too slight to be traced. Here, we shed some light on the nature of structural evolution of Fe-based glass-forming alloy during overheating process by the investigation of high-temperature melt viscometry and first principles simulations. It was found that a structural transition around 1400 ℃ occurred in the melts of initial homogeneous ingot, heterogeneous ingot and amorphous ribbons jointly, and was confirmed by the results from differential scanning calorimeter(DSC), and ab initio molecular dynamics(AIMD). Combining these results with Fe-Si-B ternary phase diagram and the melting characteristics of Fe-B compounds, it is safe to conclude that the disintegration of Fe2B type clusters to Fe3B-type clusters leads to the observed transition. These results offer a significant reference for the preparation and property control of Fe-based amorphous alloys.

关键词： Fe-based glass-forming alloys Alloy melt Cluster heterogeneity Structural transition Viscosity

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Effect of Co addition on crystallization and magnetic properties of FeSiBPCu alloy

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Progress in Natural Science:Materials International 2014年第6期24卷 649-654页

作者： Rui Xiang shaoxiong zhou Bangshao Dong Guangqiang Zhang Zongzhen Li Yanguo Wang Chuntao Chang China Iron & Steel Research Institute Group Advanced Technology & Materials Co. Ltd. Institute of Physics Chinese Academy of Sciences PO Box 603 Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences

The effects of Co addition on the microstructure,crystallization processes and soft magnetic properties of(Fe1 xCox)83Si4B8P4Cu1(x?0.35,0.5,0.65)alloys were investigated.The experimental results demonstrated that the addition of Co decreased the thermal stability against crystallization of the amorphous phase,and thus improved the heat treatment temperature of this alloy.Fe Co Si BPCu nanocrystalline alloys with a dispersedα0-Fe Co phase were obtained by appropriately annealing the as-quenched ribbons at 763 K for 10 min.Theα0-Fe Co with grains size ranging from 9 to 28 nm was identified in primary crystallization.The coercivity(Hc)markedly increased with increasing x and exhibited a minimum value at x0.35,while the saturation magnetic flux density(Bs)shows a slight decrease.The(Fe0.65Co0.35)83Si4B8P4Cu1nanocrystalline alloy exhibited a high saturation magnetic flux density Bsof 1.68 T,a low coercivity,Hcof 5.4 A/m and a high effective permeability meof 29,000 at 1 k Hz.

关键词： Crystallization Soft magnetic properties Microstructure High temperature Nanocrystalline alloy

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