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学者姓名：杜文博
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Abstract ：
This study targets the optimization of anode materials for primary magnesium-air batteries by utilizing the Mg2Zn-0.2Ca alloy which contains only Ca 2 Mg 6 Zn 3 second phase. The findings underscore the capacity of heat treatment to fine-tune grain sizes and second phases, exerting a direct impact on the electrochemical characteristics and discharge responses of these anodes. By adjusting the parameters of the homogenization process, alloys with similar grain sizes but differing in the content and distribution of the second phase were obtained. Based on this, the relationship between properties of second phase and discharge behavior was investigated. Results show that after homogenizing at 400 degrees C for 12 h, the alloy with optimized second phase content exhibits enhanced discharge performance with an anodic utilization efficiency value of 65.3 % (at 10 mA cm -2 ), a discharge capacity value of 1438.8 mAh g -1 (at 10 mA cm -2 ) and a specific energy value of 2142.9 mWh g -1 (at 1 mA cm -2 ). Moreover, the discharge mechanism is analyzed, and the results reveal that during the early stages of discharging, the discharge reaction selectively unfolds in the matrix surrounding the Ca 2 Mg 6 Zn 3 second phases. This research provides meaningful information for designing high-performance, low-cost alloy anodes for primary Mg-air batteries.
Keyword ：
Discharge performances Discharge performances Mg-air batteries Mg-air batteries Mg-Zn-Ca alloys Mg-Zn-Ca alloys Heat treatment Heat treatment Second phase Second phase
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| GB/T 7714 | Li, Shubo , Li, Xuening , Zhao, Chenchen et al. Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 94 . |
| MLA | Li, Shubo et al. "Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode" . | JOURNAL OF ENERGY STORAGE 94 (2024) . |
| APA | Li, Shubo , Li, Xuening , Zhao, Chenchen , Li, Han , Liang, Hongxing , Wang, Shuo et al. Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode . | JOURNAL OF ENERGY STORAGE , 2024 , 94 . |
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Abstract ：
Surface etched graphene nanoplatelets (SEGs) were obtained by KOH etching of reduced graphene oxides, and the etching degree was controlled by KOH addition. Nano-sized pores with diameters mainly around 1 nm and 4 nm were created on the surface carbon layer of SEGs. During the composite preparation, the nanopores on SEGs provided nucleation sites and suppressed the growth of Mg crystal, which led to Mg nanograins. The mechanical deformation (hot extrusion) and nanocrystalline structures promoted Mg amorphization transition on the interface. The absorbed and residual oxygen on SEGs reacted with Mg into MgO nanoparticles. These nanoparticles (Mg nanograins, MgO nanograins and amorphous Mg) respectively had coherent, semi-coherent and incoherent interface with Mg matrix, which caused dislocations and lattice mismatch regions along the interface. The resulting heterogeneous interface of SEGs/nanoparticles/Mg matrix built a nano-micro hierarchical structure, which largely enhanced the strength and ductility of SEGs/ZK61 composites. The SEG-4/ZK61 composite exhibited optimum mechanical performance with yield strength of 236 MPa, ultimate tensile strength of 337 MPa, and especially elongation of 32 %. This work develops nanopore-modified graphene to reinforce Mg alloys, which might provide a design guideline for high performance metal matrix composites.
Keyword ：
Surface etching Surface etching Interface Interface Mechanical properties Mechanical properties Magnesium Magnesium Graphene Graphene
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| GB/T 7714 | Wu, Xuefeng , Du, Xian , Wang, Zhaohui et al. Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 913 . |
| MLA | Wu, Xuefeng et al. "Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 913 (2024) . |
| APA | Wu, Xuefeng , Du, Xian , Wang, Zhaohui , Li, Shubo , Liu, Ke , Du, Wenbo . Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 913 . |
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| GB/T 7714 | Du, Baotian , Yu, Zijian , Shi, Kang et al. Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023) [J]. | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (9) : 1572-1572 . |
| MLA | Du, Baotian et al. "Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023)" . | ACTA METALLURGICA SINICA-ENGLISH LETTERS 36 . 9 (2023) : 1572-1572 . |
| APA | Du, Baotian , Yu, Zijian , Shi, Kang , Liu, Ke , Li, Shubo , Du, Wenbo . Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023) . | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (9) , 1572-1572 . |
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Abstract ：
The effect of carbon nanotubes (CNTs) on the aging behavior of Mg-9Al matrix composites was studied, and the evolution of microstructures, mechanical properties and thermal conductivity of composites during the aging treatment were discussed. Results show that the addition of CNTs increases the solid solubility of Al in Mg matrix and limited the migration of grain boundaries during the aging process, which can promote the formation of continuous precipitated phases beta-Mg17Al12 in CNTs/Mg-9Al composites. The rod-shaped continuous precipitates in coherent relationship with Mg matrix can effectively hinder the dislocation movement, which can improve the mechanical properties of the composites. Besides, the reduction of solid solution Al atoms during aging process and the addition of CNTs can improve the thermal conductivity of the composites. The property evaluation indicates that the tensile yield strength, ultimate tensile strength, diffusivity and thermal conductivity of peak-aged 0.4CNTs/Mg-9Al composite are 275 MPa, 369 MPa, 34.5 mm(2)/s and 68.4 W/(mmiddotK) respectively, showing 17%, 23%, 43% and 45% increasing in comparison with those of Mg-9Al before aging.
Keyword ：
mechanical property mechanical property thermal conductivity thermal conductivity aging treatment aging treatment CNTs CNTs magnesium matrix composites magnesium matrix composites
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| GB/T 7714 | Shubo, Li , Jiangtao, Hou , Fanjing, Meng et al. Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites [J]. | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING , 2023 , 51 (1) : 26-35 . |
| MLA | Shubo, Li et al. "Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites" . | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING 51 . 1 (2023) : 26-35 . |
| APA | Shubo, Li , Jiangtao, Hou , Fanjing, Meng , Ke, Liu , Zhaohui, Wang , Wenbo, Du . Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites . | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING , 2023 , 51 (1) , 26-35 . |
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Abstract ：
To accelerate the commercial application of rechargeable aqueous Zn-air batteries, it is essential to develop effective catalysts for oxygen evolution reaction (OER). This work reports a novel nanohybrid catalyst comprising amorphous B doped Fe-Ni bimetal hydroxide nano-sheets supported on multiwalled carbon nano -tubes for high-efficiency Zn-air batteries, which was synthesized via a facile ultrasonic-assisted BH4- fast reduction reaction. The as-constructed nano-complex with optimal composition exhibited outstanding activity and stability for the OER process, with an overpotential of 219.43 mV for 10 mA cm-2 and a Tafel slope of 43.1 mV dec- 1. A fabricated Zn-air battery delivered both excellent energy efficiency and high cycling stability, exhibiting a peak power density of 343.7 mW cm-2 and a favorable stability of over 200 h. The enhanced battery performance demonstrates the nanohybrid to be a promising candidate catalyst for Zn-air batteries with low-cost, high efficiency and long-term stability.
Keyword ：
Oxygen evolution reaction Oxygen evolution reaction B doping B doping FeNi hydroxide FeNi hydroxide Carbon nanotube Carbon nanotube Zn-air battery Zn-air battery
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| GB/T 7714 | Zhao, Chenchen , Jin, Yuhong , Yu, Zijian et al. B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries [J]. | MATERIALS CHEMISTRY AND PHYSICS , 2023 , 295 . |
| MLA | Zhao, Chenchen et al. "B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries" . | MATERIALS CHEMISTRY AND PHYSICS 295 (2023) . |
| APA | Zhao, Chenchen , Jin, Yuhong , Yu, Zijian , Li, Shubo , Meng, Fanjing , Yuan, Yanping et al. B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries . | MATERIALS CHEMISTRY AND PHYSICS , 2023 , 295 . |
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Abstract ：
研究了CNTs的加入对Mg-9 Al镁基复合材料时效行为的影响,探讨了时效处理过程中微观组织、力学性能及导热性能的演变规律.结果表明:添加的CNTs增大了基体合金中铝元素的固溶度,并在时效过程中限制晶界的迁移,在二者共同作用下,促进基体中连续β-Mg17 Al12相的析出,且随着CNTs含量的增加,连续析出的比例增大;与基体呈共格关系的杆状连续析出相能够有效地阻碍位错运动,提高复合材料的力学性能,其中峰时效态0.4CNTs/Mg-9Al复合材料的屈服强度、抗拉强度、热扩散系数和热导率分别为275 MPa,369 MPa,34.5 mm2/s和68.4 W/(m·K),相较于时效前Mg-9Al合金分别提升了17％,23％,43％和45％.
Keyword ：
时效处理 时效处理 碳纳米管 碳纳米管 镁基复合材料 镁基复合材料 力学性能 力学性能 热导率 热导率
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| GB/T 7714 | 李淑波 , 侯江涛 , 孟繁婧 et al. CNTs/Mg-9Al复合材料微观组织、力学及导热性能 [J]. | 材料工程 , 2023 , 51 (1) : 26-35 . |
| MLA | 李淑波 et al. "CNTs/Mg-9Al复合材料微观组织、力学及导热性能" . | 材料工程 51 . 1 (2023) : 26-35 . |
| APA | 李淑波 , 侯江涛 , 孟繁婧 , 刘轲 , 王朝辉 , 杜文博 . CNTs/Mg-9Al复合材料微观组织、力学及导热性能 . | 材料工程 , 2023 , 51 (1) , 26-35 . |
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Abstract ：
The lamellar and orientational characteristics of graphene nanoplatelets (GNPs) are crucial for reinforcing metal matrix composites, particularly in terms of their thermal properties. Two kinds of GNPs with plane sizes of 6 & mu;m and 80 & mu;m were respectively used as reinforcements in ZK60 alloy by powder metallurgy. The oriented distribution of GNPs in the matrix was obtained using a double-pass hot extrusion process, i.e., a stepped extrusion with two consecutive extrusion ratios (10:1 and 16:1). Reinforced with 0.05 wt% oriented GNPs (80 & mu;m), the composite exhibited a tensile yield strength of 257 MPa, ultimate tensile strength of 342 MPa, elongation of 24.7%, and notably enhanced thermal conductivity of 128.3 W (mK)(-1) even with refined grain size compared to the ZK60 alloy. The oriented GNPs in the matrix create a favorable path for efficient load and heat transfer, leading to the simultaneously enhancement of mechanical and thermal properties of the GNPs/ZK60 composites. This work is expected to broaden the application potential of GNPs as highly efficient reinforcements and provide a practical method for fabricating metal matrix composites.
Keyword ：
Magnesium Magnesium Mechanical properties Mechanical properties Thermal properties Thermal properties Orientation Orientation Graphene Graphene
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| GB/T 7714 | Zhu, Baohong , Du, Xian , Meng, Fanjing et al. Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets [J]. | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (12) : 1999-2012 . |
| MLA | Zhu, Baohong et al. "Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets" . | ACTA METALLURGICA SINICA-ENGLISH LETTERS 36 . 12 (2023) : 1999-2012 . |
| APA | Zhu, Baohong , Du, Xian , Meng, Fanjing , Wu, Xuefeng , Liu, Ke , Li, Shubo et al. Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets . | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (12) , 1999-2012 . |
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Abstract ：
一种具有原位双界面结构的石墨烯增强镁基复合材料及其制备方法，属于复合材料技术领域。将石墨原料进行氧化、还原处理，获得具备一定含氧官能团的石墨烯；在乙醇溶剂中将石墨烯进行超声分散处理，随即加入镁合金粉末充分混合，烘干后获得石墨烯/镁合金复合粉末；将复合粉末热挤压为预制体，投入到镁合金熔体内，经过浇铸及热挤压处理，获得石墨烯增强镁基复合材料。石墨烯表面含氧官能团与基体镁原子在复合过程中原位生成的MgO纳米颗粒，一方面以化学键方式依附于石墨烯表面，一方面与镁基体形成了半共格界面关系，这种双界面结构大大提升了复合材料的界面结合，且晶粒细化效果明显，获得综合力学性能优异的石墨烯增强镁基复合材料。
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| GB/T 7714 | 杜文博 , 魏治平 , 杜宪 et al. 一种具有原位双界面结构的石墨烯增强镁基复合材料及其制备方法 : CN202210089677.1[P]. | 2022-01-25 . |
| MLA | 杜文博 et al. "一种具有原位双界面结构的石墨烯增强镁基复合材料及其制备方法" : CN202210089677.1. | 2022-01-25 . |
| APA | 杜文博 , 魏治平 , 杜宪 , 刘轲 , 李淑波 , 王朝辉 . 一种具有原位双界面结构的石墨烯增强镁基复合材料及其制备方法 : CN202210089677.1. | 2022-01-25 . |
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Abstract ：
Graphene nanoplatelets (GNPs) are commonly regarded as an ideal reinforcement for metal matrix composites because of their excellent mechanical properties. However, these excellent properties cannot be fully exploited due to GNPs aggregation and poor bonding interface. In the present investigation, GNPs with different residual oxygen amount were prepared by adjusting the amount of KMnO4 oxidant using the modified Hummers method as well as thermal reduction. The GNPs-reinforced ZK60 matrix composites (GNPs/ZK60) were prepared through stir casting. Structure characterization indicates there are C-O, C-O-C and C-C--O oxygen-containing functional groups on the synthesized GNPs, among which all C-C--O and parts of C-O groups are broken and react with Mg to form MgO particles. The formed interfaces in terms of MgO in the GNPs/ZK60 composites are MgO/Mg, having a semi-coherent interface structure, and MgO/GNPs, having an incoherent interface structure. The sandwich interface structure of Mg/MgO/GNPs improves the interface bonding, in which the ultimate tensile strength and elongation of the 0.05 wt.%GNPs-4/ZK60 composite reached 261 MPa and 12.1%, increasing 37.4% and 128.3%, respectively, compared with those of the monolithic matrix. It is suggested the present work might offer a design guideline for graphene reinforced metal matrix composites.
Keyword ：
Graphene Graphene Mechanical properties Mechanical properties Interface Interface Magnesium Magnesium MgO MgO
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| GB/T 7714 | Wei, Zhiping , Du, Xian , Du, Wenbo et al. Influence of the residual oxygen amount in reduced graphene nanoplatelets on microstructure and mechanical properties of ZK60 matrix composites [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2022 , 842 . |
| MLA | Wei, Zhiping et al. "Influence of the residual oxygen amount in reduced graphene nanoplatelets on microstructure and mechanical properties of ZK60 matrix composites" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 842 (2022) . |
| APA | Wei, Zhiping , Du, Xian , Du, Wenbo , Meng, Fanjing , Liu, Ke , Li, Shubo . Influence of the residual oxygen amount in reduced graphene nanoplatelets on microstructure and mechanical properties of ZK60 matrix composites . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2022 , 842 . |
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Abstract ：
The present work focuses on the effects of rare earth (RE = Gd and Er) contents on the microstructural evolution and mechanical performance of Mg-Gd-Er-Zr alloys. Three different alloys, i.e., Mg-12Gd-2Er-0.4Zr, Mg-14Gd-1Er-0.4Zr, and Mg-14Gd-2Er-0.4Zr, are fabricated and subjected to double-pass extrusion. Incomplete dynamic recrystallization (DRX) resulted in a non-homogeneous grain structure with coarse and refined equiaxed grains during single-pass extrusion. In contrast, the grain size decreased dramatically after double-pass extrusion, and a high number of fine Mg5RE particles precipitated in the Mg-14Gd-2Er-0.4Zr alloy than the other two extruded alloys. Moreover, the Mg5RE particles larger than 1 mu m contributed to increase the DRX fraction, whereas the finer ones exerted a strong pinning effect on grain boundaries. The volume fraction of beta' precipitates increased with increasing RE content in the matrix. A large volume fraction of beta' precipitates in the alloy will primarily result in higher hardness and strength in the peak-aged condition. After peak-aging treatment, the double-pass extruded Mg-14Gd-2Er-0.4Zr alloy exhibited a good yield strength of 481 +/- 3.7 MPa and an adequate elongation of 3.2 +/- 0.6%. The influence mechanisms of grain refinement, fine particles, and the strengthening of beta' precipitates are discussed.
Keyword ：
Microstructure Microstructure Double-pass extrusion Double-pass extrusion Tensile properties Tensile properties Mg-Gd-Er-Zr alloys Mg-Gd-Er-Zr alloys Age hardening Age hardening
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| GB/T 7714 | Mansoor, Adil , Du, Wenbo , Yu, Zijian et al. Improved mechanical performance of double-pass extruded Mg-Gd-Er-Zr alloys with various rare earth contents [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2022 , 840 . |
| MLA | Mansoor, Adil et al. "Improved mechanical performance of double-pass extruded Mg-Gd-Er-Zr alloys with various rare earth contents" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 840 (2022) . |
| APA | Mansoor, Adil , Du, Wenbo , Yu, Zijian , Liu, Ke , Ding, Ning , Fu, Junjian et al. Improved mechanical performance of double-pass extruded Mg-Gd-Er-Zr alloys with various rare earth contents . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2022 , 840 . |
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