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Heterointerface Engineering-Induced Oxygen Defects for the Manganese Dissolution Inhibition in Aqueous Zinc Ion Batteries

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Energy & Environmental Materials 2024年第3期7卷 112-122页

作者： wentao qu Yong Cai Baohui Chen Ming Zhang Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics&Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of Education&Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China State Key Laboratory of Disaster Prevention&Reduction for Power Grid Transmission and Distribution Equipment(Hunan Electric Power Corporation Disaster Prevention and Reduction Center) Changsha 410007China

Manganese-based material is a prospective cathode material for aqueous zinc ion batteries(ZIBs)by virtue of its high theoretical capacity,high operating voltage,and low ***,the manganese dissolution during the electrochemical reaction causes its electrochemical cycling stability to be *** this work,heterointerface engineering-induced oxygen defects are introduced into heterostructure MnO_(2)(δa-MnO_(2))by in situ electrochemical activation to inhibit manganese dissolution for aqueous zinc ion ***,the heterointerface between the disordered amorphous and the crystalline MnO_(2)ofδa-MnO_(2)is decisive for the formation of oxygen *** the experimental results indicate that the manganese dissolution ofδa-MnO_(2)is considerably inhibited during the charge/discharge *** analysis indicates that the oxygen defect regulates the electronic and band structure and the Mn-O bonding state of the electrode material,thereby promoting electron transport kinetics as well as inhibiting Mn ***,the capacity ofδa-MnO_(2)does not degrade after 100 cycles at a current density of 0.5 Ag^(-1)and also 91%capacity retention after 500cycles at 1 Ag^(-1).This study provides a promising insight into the development of high-performance manganese-based cathode materials through a facile and low-cost strategy.

关键词： electrochemical activation heterointerface manganese dissolution inhibition oxygen defects zinc ion batteries

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Electrochemical Corrosion,Wear,and Tribocorrosion Behavior of Novel Ti-19Zr-10Nb-1Fe Alloy

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稀有金属材料与工程 2024年第8期53卷 2137-2143页

作者： Zheng Ziqin Huang Sizhu qu wentao Wang Zhenguo No.52 Institute of China North Industry Group Yantai 264003China Mechanical Engineering College Xi'an Shiyou UniversityXi'an 710065China Beijing Wanjie Medical Device Co. LtdBeijing 102609China

The electrochemical corrosion,wear,and tribocorrosion behavior of the novel Ti-19Zr-10Nb-1Fe alloy were *** electrochemical corrosion analysis results show that the corrosion resistance of the Ti-19Zr-10Nb-1Fe alloy is better than that of the Ti-6Al-4V alloy under the test conditions in this *** with the static electrochemical corrosion,the corrosion resistance of Ti-19Zr-10Nb-1Fe alloy during tribocorrosion decreases significantly,because the wear accelerates *** wear volume of Ti-19Zr-10Nb-1Fe alloy is increased with the increase in applied load whether the electrochemical corrosion occurs or *** to the acceleration effect of electrochemical corrosion,the wear volume caused by electrochemical corrosion is larger than that without electrochemical *** results of Wa/Wc are much greater than 10,indicating that during the tribocorrosion process,the material loss caused by mechanical wear is much larger than that caused by electrochemical *** SEM observation of the wear morphologies of Ti-19Zr-10Nb-1Fe alloy after tribocorrosion,it can be inferred that the micro-abrasion is the main wear *** above results show that during the tribocorrosion process,the corrosion accelerates wear,and the wear accelerates corrosion.

关键词： electrochemical corrosion wear tribocorrosion Ti-19Zr-10Nb-1Fe

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Sulfonate-functionalization in Zn-iodine batteries as one stone kills two birds:iodine limiter and uniform Zn plating guidance layer

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Science China Materials 2024年第9期67卷 2889-2897页

作者： wentao qu Chenyu Wen Baohui Chen Yong Cai Ming Zhang Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics&Devices School of Physics and ElectronicsHunan UniversityChangsha410082China Engineering Research Center of Advanced Semiconductor Technology and Application of Ministry of Education&Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha410082China College of Materials Science and Engineering Hunan UniversityChangsha410082China Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha410082China State Key Laboratory of Disaster Prevention&Reduction for Power Grid(Hunan Electric Power Corporation Disaster Prevention and Reduction Center) Changsha410007China

Aqueous Zn-iodine(Zn-I_(2))batteries have attracted extensive research interest as an emerging redox conversion energy storage system due to the low cost and high ***,the shuttling effects of polyiodides arising from incomplete redox conversion and inhomogeneous Zn plating on the Zn anode surface always hinder the commercial application of Zn-I_(2)*** this work,a two-birds-with-one-stone strategy is reported for long-life Zn-I_(2)*** on the strategy,the sulfonate-functionalized carbon fiber not only acts as the excellent iodine limiter to inhibit iodine species shuttling,but also as the uniform Zn plating guidance layer on the Zn anode surface to prevent the inhomogeneous deposition of Zn^(2+).Consequently,a superior cycling stability(a capacity of 124 mAh g^(-1)after 10,000 cycles at 5 A g^(-1))is *** calculations illustrate that sulfonate groups successfully induce charge redistribution on the carbon substrate,thereby strengthening the electronic interactions of the iodine species with the carbon *** charge-enriched sulfonate groups can guide the uniform deposition of Zn^(2+)through a strong Coulombic effect with Zn^(2+).This work gives a new perspective on the integrated design of cathodes and anodes for rechargeable batteries.

关键词： sulfonate-functionalization iodine limiter uniform deposition Zn plating guidance layer Zn-iodine batteries

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基于ANSYS的双圆弧齿轮接触应力有限元分析

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农业机械学报 2006年第10期37卷 139-141页

作者：屈文涛沈允文徐建宁西安石油大学机械工程学院西北工业大学机电学院

利用ANSYS软件的参数化设计语言APDL建立双圆弧齿轮的三维有限元单齿对接触静态模型,并对模型划分网格,施加载荷,获得了双圆弧齿轮的静态接触应力云图;基于ANSYS/LSDYNA建立了柔性体多齿动态接触模型,并对齿轮进行了动态接触分析。计算... 详细信息

利用ANSYS软件的参数化设计语言APDL建立双圆弧齿轮的三维有限元单齿对接触静态模型,并对模型划分网格,施加载荷,获得了双圆弧齿轮的静态接触应力云图;基于ANSYS/LSDYNA建立了柔性体多齿动态接触模型,并对齿轮进行了动态接触分析。计算分析结果为双圆弧齿轮的设计和使用提供了理论依据。

关键词：双圆弧齿轮动态接触应力云图 ANSYS 参数化设计

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止推滑动轴承的温度场和热变形分析

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润滑与密封 2006年第8期31卷 120-121,148页

作者：徐建宁屈文涛赵宁西安石油大学陕西西安710065 西北工业大学陕西西安710072

通过对止推滑动轴承的传热学、摩擦学研究,建立了该轴承相应的稳态温度场和热变形的三维热分析有限元模型,并运用ANSYS分析了轴承处于热平衡状态时的温升和热变形。研究结果表明,对于井下用止推滑动轴承,由于其摩擦产生的热量很大,在地... 详细信息

通过对止推滑动轴承的传热学、摩擦学研究,建立了该轴承相应的稳态温度场和热变形的三维热分析有限元模型,并运用ANSYS分析了轴承处于热平衡状态时的温升和热变形。研究结果表明,对于井下用止推滑动轴承,由于其摩擦产生的热量很大,在地面常温下设计时应考虑到热变形对轴承间隙的影响。

关键词：止推滑动轴承游隙温度场热变形

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双螺杆泵同步用双圆弧齿轮动态性能研究

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机床与液压 2006年第7期34卷 52-54,107页

作者：屈文涛沈允文西北工业大学

采用ANSYS内嵌的APDL语言,建立新型螺杆泵同步用双圆弧齿轮三维有限元单齿对接触静态模型和柔性体多齿动态接触模型,并对模型划分网格,施加载荷,获得了双圆弧齿轮的动态性能及在额定载荷作用下各部位的接触应力和弯曲应力分布状况,基于A... 详细信息

采用ANSYS内嵌的APDL语言,建立新型螺杆泵同步用双圆弧齿轮三维有限元单齿对接触静态模型和柔性体多齿动态接触模型,并对模型划分网格,施加载荷,获得了双圆弧齿轮的动态性能及在额定载荷作用下各部位的接触应力和弯曲应力分布状况,基于ANSYS/LS-DYNA对齿轮进行了动态接触分析。计算分析结果为新型螺杆泵同步齿轮的设计和改进提供了必要的依据。

关键词：双螺杆泵双圆弧齿轮有限元动力学

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钛合金激光表面处理的进展及应用

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稀有金属材料与工程 2024年第5期53卷 1296-1309页

作者：徐剑波张博文屈文涛孙霖霖西安石油大学机械工程学院陕西西安710065 西北工业大学机电学院陕西西安710072 长安大学道路施工技术与装备教育部重点实验室陕西西安710064

钛及其合金由于质轻、耐腐蚀性能好、强度高、弹性模量低、生物相容性佳和骨整合性优异,已成为应用最广泛的航空航天与生物医学金属材料之一。然而,较低的塑性、低硬度、和耐磨损性能限制了其发展和应用。激光表面处理(LST)技术在不改... 详细信息

钛及其合金由于质轻、耐腐蚀性能好、强度高、弹性模量低、生物相容性佳和骨整合性优异,已成为应用最广泛的航空航天与生物医学金属材料之一。然而,较低的塑性、低硬度、和耐磨损性能限制了其发展和应用。激光表面处理(LST)技术在不改变材料体积的情况下增强表面性能,成为钛合金表面改性的一种有利手段。综述了利用LST技术对钛及其合金材料进行表面改性的研究进展和应用现状。分析了激光相变硬化、激光表面重熔、激光冲击喷丸、激光表面合金化、激光熔覆和复合LST的机理、工艺参数、表面特性和微观结构。总结了LST在航空航天、医学等领域的应用,介绍了现有的局限性,提出了未来的研究方向,并对LST在钛及其合金材料上的发展趋势进行了展望,以推进LST创新,为钛合金在多领域中的应用开辟新途径。

关键词：激光表面处理钛合金航空航天医疗

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