检索结果-南通市图书馆

Self-supported transition metal phosphide based electrodes as high-efficient water splitting cathodes

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2018年第3期12卷 494-508页

作者： Yan Zhang Jian Xiao Qiying Lv Shuai Wang state key laboratory of Digital Manufacturing equipment and Technology Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China Flexible Electronics Research Center (FERC) School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

Electrolytic water splitting has been considered as a promising technology to produce highly pure H2 by using electrical power produced from wind, solar energy or other fitful renewable energy resources. Combining novel self-supporting structure and high-performance transition metal phosphides （TMP） shows substantial promise for practical application in water splitting. In this review, we try to provide a comprehensive analysis of the design and fabrication of various self-supported TMP electrodes for hydrogen evolution reaction, which are divided into three categories： catalysts growing on carbon-based substrates, catalysts growing on metal-based substrates and free- standing catalyst films. The material structures together with catalytic performances of self-supported electrodes are presented and discussed. We also show the specific strategies to further improve the catalytic performance by elemental doping or incorporation of nanocarbons. The simple and one-step methods to fabricate self-supported TMP electrodes are also highlighted. Finally, the chal- lenges and perspectives for self-supported TMP electrodes in water splitting application are briefly discussed.

关键词： transition metal phosphide self-supported electrode electrocatalysis hydrogen evolution reaction

Determination of dielectric properties of titanium carbide fabricated by microwave synthesis with Ti-bearing blast furnace slag

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 Minerals,metallurgy and materials 2021年第1期28卷 88-97页

作者： Peng Liu Li-bo Zhang Bing-guo Liu Guang-jun He Jin-hui Peng Meng-yang Huang state key laboratory of Complex Nonferrous metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China Yunnan Provincial key laboratory of Intensification metallurgy Kunming 650093China National Local Joint laboratory of Engineering application of Microwave Energy and equipment Technology Kunming 650093China Faculty of metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Faculty of Science Kunming University of Science and TechnologyKunming 650500China Yunnan Energy Research Institute Co. Ltd.Kunming 650093China

The preparation of functional material titanium carbide by the carbothermal reduction of Ti-bearing blast furnace slag with microwave heating is an effective method for valuable metals recovery;it can alleviate the environmental pressure caused by slag *** dynamic dielectric parameters of Ti-bearing blast furnace slag/pulverized coal mixture under high-temperature heating are measured by the cylindrical resonant cavity perturbation *** the transient dipole and large π bond delocalization polarization phenomena, the interaction mechanism of the microwave macroscopic non-thermal effect on the titanium carbide synthesis reaction was *** material thickness range during microwave heating was optimized by the joint analysis of penetration depth and reflection loss, which is of great significance to the design of the microwave reactor for the carbothermal reduction of Ti-bearing blast furnace slag.

关键词： titanium-bearing blast furnace slag dielectric mechanism penetration depth reflection loss microwave heating efficiency

具有异质结构的多功能氧化石墨烯改性纳米纤维膜(ZnS-CoS@GO@CNFs)用于长期稳定的钾离子储存

在线全文

学校读者我要写书评

暂无评论

中国科学:材料科学(英文版) 2023年第8期66卷 3093-3103页

作者：楼愉康李鹏超何宏程周世强蔡勇陈宝辉张明 Hunan Provincial key laboratory of Low-Dimensional Structural Physics&Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China Changsha Semiconductor Technology and application Innovation Research Institute College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China College of Science Henan University of TechnologyZhengzhou 450001China 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 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

过渡金属硫化物作为钾离子电池的高理论容量阳极,由于其电导率低、循环过程体积膨胀大,导致其倍率性能和循环稳定性较差.本文采用氧化石墨烯(GO)来控制纳米颗粒在纤维中的粒径和分布,以提高复合纤维的导电性和拉伸变形.此外,由异质结构... 详细信息

过渡金属硫化物作为钾离子电池的高理论容量阳极,由于其电导率低、循环过程体积膨胀大,导致其倍率性能和循环稳定性较差.本文采用氧化石墨烯(GO)来控制纳米颗粒在纤维中的粒径和分布,以提高复合纤维的导电性和拉伸变形.此外,由异质结构和氧化石墨烯组成的三维导电碳网络(ZnS-CoS@GO@CNFs)可以加速钾离子储存的动力学并稳定钾离子储存.作为钾离子电池的阳极材料,该复合材料在3 A g^(−1)下具有210 mA h g^(−1)的优异倍率性能.在2 A g^(−1)的大电流下经历2800次循环后仍表现出171 mA h g^(−1)的容量,容量保持率为97.7%.此外,当纳米纤维膜用作自支撑阳极时,仍然可以保持稳定的容量输出(在0.1 A g^(−1)下100次循环后容量为302 mA h g^(−1)).由钾离子混合电容器组装的可折叠袋状电池在多角度重复弯曲和最终恢复的情况下仍然可以安全地工作,并且可以提供大的能量密度(134 W h kg^(−1))和功率密度(5815 W kg^(−1)).优异的电化学性能进一步揭示了多功能氧化石墨烯复合纤维膜的应用前景.

关键词：混合电容器理论容量阳极材料异质结构氧化石墨烯过渡金属硫化物钾离子电化学性能

Efficient Carbon-Based CsPbBr_3 Inorganic Perovskite Solar Cells by Using Cu-Phthalocyanine as Hole Transport material

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2018年第2期10卷 185-197页

作者： Zhiyong Liu Bo Sun Xingyue Liu Jinghui Han Haibo Ye Tielin Shi Zirong Tang Guanglan Liao state key laboratory of Digital Manufacturing equipment and Technology Huazhong University of Science and Technology Flexible Electronics Research Center Huazhong University of Science and Technology

metal halide perovskite solar cells(PSCs) have attracted extensive research interest for next-generation solution-processed photovoltaic devices because of their high solar-to-electric power conversion efficiency(PCE)and low fabrication cost. Although the world's best PSC successfully achieves a considerable PCE of over 20% within a very limited timeframe after intensive efforts, the stability, high cost, and up-scaling of PSCs still remain issues. Recently, inorganic perovskite material, CsPbBr_3, is emerging as a promising photo-sensitizer with excellent durability and thermal stability, but the efficiency is still embarrassing. In this work, we intend to address these issues by exploiting CsPbBr_3 as light absorber, accompanied by using Cu-phthalocyanine(CuPc) as hole transport material(HTM) and carbon as counter electrode. The optimal device acquires a decent PCE of 6.21%, over 60% higher than those of the HTM-free devices. The systematic characterization and analysis reveal a more effective charge transfer process and a suppressed charge recombination in PSCs after introducing CuPc as hole transfer layer. More importantly, our devices exhibit an outstanding durability and a promising thermal stability, making it rather meaningful in future fabrication and application of PSCs.

关键词： Perovskite solar cells(PSCs) metal halide CsPbBr3 Cu-phthalocyanine(CuPc) Carbon electrode

Development of a unified viscoplasticity constitutive model based on classical plasticity theory

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2009年第5期52卷 1248-1253页

作者： GUAN Ping LIU ChangChun Lü HeXiang College of Architectural Engineering Dalian UniversityDalian 116622China state key laboratory of Structural Analysis for Industrial equipment Dalian University of TechnologyDalian 116024China

The traditional unified viscoplasticity constitutive model can be only applied to metal *** study of the unified constitutive theory for metal materials has discovered the correlation between the classical plasticity theory and the unified viscoplasticity constitutive model,thus leading to the con-cepts of the classic plastic potential and yield surface in the unified constitutive ***,this research has given the continuous expression of the classical plastic multiplier and presented the corresponding constructive method,which extends its physical significance and lays down a good foundation for the application of the unified constitutive theory to the material analysis in more *** paper also introduces the unified constitutive model for metal materials and *** numerical simulation indicates that the construction should be both reasonable and practical.

关键词： viscoplasticity classical plasticity unified constitutive model plastic potential yield surface

MXene-Derived Defect-Rich TiO2@rGO as High-Rate Anodes for Full Na Ion Batteries and Capacitors

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2020年第10期12卷 53-68页

作者： Yongzheng Fang Yingying Zhang Chenxu Miao Kai Zhu Yong Chen Fei Du Jinling Yin Ke Ye Kui Cheng Jun Yan Guiling Wang Dianxue Cao key laboratory of Superlight materials and Surface Technology(Ministry of Education) College of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001People’s Republic of China state key laboratory of marine Resource Utilization in South China Sea Hainan Provincial Key Laboratory of Research on Utilization of Si‑Zr‑Ti ResourcesCollege of Materials Science and EngineeringHainan University58 Renmin RoadHaikou 570228People’s Republic of China key laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012People’s Republic of China

Sodium ion batteries and capacitors have demonstrated their potential applications for next-generation low-cost energy storage *** devices’s rate ability is determined by the fast sodium ion storage behavior in electrode ***,a defective TiO2@reduced graphene oxide(M-TiO2@rGO)self-supporting foam electrode is constructed via a facile MXene decomposition and graphene oxide self-assembling *** employment of the MXene parent phase exhibits distinctive advantages,enabling defect engineering,nanoengineering,and fluorine-doped metal *** a result,the M-TiO2@rGO electrode shows a pseudocapacitance-dominated hybrid sodium storage *** pseudocapacitance-dominated process leads to high capacity,remarkable rate ability,and superior cycling ***,an M-TiO2@rGO//Na3 V2(PO4)3 sodium full cell and an M-TiO2@rGO//HPAC sodium ion capacitor are fabricated to demonstrate the promising application of M-TiO2@*** sodium ion battery presents a capacity of 177.1 mAh g-1 at 500 mA g-1 and capacity retention of 74%after 200 *** sodium ion capacitor delivers a maximum energy density of 101.2 Wh kg-1 and a maximum power density of 10,103.7 W *** 1.0 A g-1,it displays an energy retention of 84.7%after 10,000 cycles.

关键词： MXene-Ti2CTx Vacancy oxygen Self-supporting TiO2 anodes Sodium ion battery and capacitor

Investigation progresses of rare earth complexes as emitters or sensitizers in organic light-emitting diodes

在线全文

学校读者我要写书评

暂无评论

Light(Science & applications) 2022年第7期11卷 1397-1413页

作者： Shuaibing Li Liang Zhou Hongjie Zhang state key laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences130022 ChangchunChina University of Science and Technology of China 230027 HefeiChina Department of Chemistry Tsinghua University100084 BeijingChina

Due to unique photo-physical characteristics,rare earth(RE)complexes play important roles in many fields,for example,telecommunications,life science,and organic light-emitting diodes(OLEDs).Especially,thanks to narrow emission bandwidth and 100%theoretical internal quantum efficiency(IQE),the study of RE complexes in the electroluminescence field has been a hot research topic in recent 30 *** a leading technology in solid-state light source fields,OLEDs have attracted great interest from academic researchers and commercial *** the last decades,OLED-based products have trickled into the commercial market and developed quickly into portable display ***,we briefly introduce the luminescent characteristics and electroluminescent(EL)study of RE complexes in material synthesis and device ***,we emphatically reveal the innovative application of RE complexes as sensitizers in *** experimental validation,the application of RE complexes as sensitizers can realize the complementary advantages of RE complexes and transition metal complexes,leading to significantly improved performances of *** application of RE complexes as sensitizers provides a new strategy for designing and developing novel high performances OLEDs.

关键词： complexes rare earth

Corrigendum to“The Synergy Between Cement Spheroidization and Cu Alloying on the Corrosion Resistance of Ferrite-Pearlite Steel in Acid Chloride Solution”[***.84(2021)65-75]

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

Journal of materials Science & Technology 2021年第36期95卷 180-180页

作者： Junhua Dong Shenyang National laboratory for materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China state key laboratory of metal material for marine equipment and application Anshan 114009China

The authors regret to inform that their previous address sequence was *** correct order of address is given above.

关键词： Corrosion Alloying Chloride

Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation process

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 Minerals,metallurgy and materials 2021年第1期28卷 30-45页

作者： Zhi Zhang Jing-huai Zhang Jun Wang Ze-hua Li Jin-shu Xie Shu-juan Liu Kai Guan Rui-zhi Wu key laboratory of Superlight material and Surface Technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Ningbo Branch Ordnance Science Institute of ChinaNingbo 315103China Department of materials Physics and Chemistry Harbin Institute of TechnologyHarbin 150001China

Magnesium(Mg) alloys, as the lightest metal engineering materials, have broad application ***, the strength and ductility of traditional Mg alloys are still relativity low and difficult to improve *** grain size via the deformation process based on the grain boundary strengthening and the transition of deformation mechanisms is one of the feasible strategies to prepare Mg alloys with high strength and high *** this review, the effects of grain size on the strength and ductility of Mg alloys are summarized, and fine-grained Mg alloys with high strength and high ductility developed by various severe plastic deformation technologies and improved traditional deformation technologies are *** some achievements have been made, the effects of grain size on various Mg alloys are rarely discussed systematically and some key mechanisms are unclear or lack direct microscopic *** review can be used as a reference for further development of high-performance fine-grained Mg alloys.

关键词： magnesium alloys grain refinement high strength high ductility deformation process