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Shenzhen key laboratory of Organic Optoelectromagnetic Functional materials

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Frontiers of physics 2021年第1期16卷 F0003-F0003页

作者： key Contact School of advanced materials Director Shenzhen Key Laboratory of Organic Optoelectromagnetic Functional Materials

Overview Shenzhen key laboratory of Organic Optoelectromagnetic Functional materials was established in 2014 and is located at the University Town of Shenzhen.The laboratory provides leading materials,technological process and equipment supports in organic electronics research,including the synthesis of functional organic small molecules and polymers,design and fabrication of organic electronic devices,and the application demonstration of organic electronics.

关键词： Functional synthesis key

2D mesoporous materials

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National Science Review 2022年第5期9卷 12-14页

作者： Yan Ai Wei Li Dongyuan Zhao Department of Chemistry Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and State Key Laboratory of Molecular Engineering of PolymersFudan University

Mesoporous materials with high surface areas,large pore volumes,tunable nanostructures and diverse compositions have been widely investigate d,and show great promise in adsorption,catalysis,separation,biomedicine,ener...

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Activating sulfur oxidation reaction via six-electron redox mesocrystal NiS2 for sulfur-based aqueous batteries

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National Science Review 2023年第6期10卷 64-74页

作者： Zhoudong Yang Boya Wang Yongjin Chen Wanhai Zhou Hongpeng Li Ruizheng Zhao Xinran Li Tengsheng Zhang Fanxing Bu Zaiwang Zhao Wei Li Dongliang Chao Dongyuan Zhao laboratory of advanced materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials College of Chemistry and Materials Fudan University Center for High Pressure Science and Technology advanced Research

Sulfur-based aqueous batteries(SABs) are deemed promising candidates for safe,low-cost,and high-capacity energy storage.However,despite their high theoretical capacity,achieving high reversible value remains a great challenge due to the thermodynamic and kinetics problems of elemental sulfur.Here,the reversible six-electron redox electrochemistry is constructed by activating the sulfur oxidation reaction(SOR) process of the elaborate mesocrystal NiS2(M-NiS2).Through the unique 6e-solid-to-solid conversion mechanism,SOR efficiency can reach an unprecedented degree of ca.96.0%.The SOR efficiency is further reve aled to be closely associated with the kinetics feasibility and thermodynamic stability of the M-NiS2intermedium in the formation of elemental sulfur.Benefiting from the boosted SOR,compared with the bulk electrode, the M-NiS2electrode exhibits a high reversible capacity(1258 mAh g-1),ultrafast reaction kinetics(932 mAh g-1at 12 A g-1),and long-term cyclability(2000 cycles at 20 A g-1).As a proof of concept,a new M-NiS2‖ Zn hybrid aqueous battery exhibits an output voltage of 1.60 V and an energy density of 722.4 Wh kgcath-1,which opens a new opportunity for the development of high-energy aqueous batteries.

关键词： sulfur-based aqueous battery mesocrystal material sulfur oxidation reaction high-energy aqueous battery six-electron redox

Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism

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National Science Review 2023年第4期10卷 159-168页

作者： Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang Zhaoyong Zou Zhengyi Fu State key laboratory of advanced Technology for materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong laboratory

Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ions.Moreover, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.

关键词： nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment

Hot compressive deformation of eutectic Al-17at%Cu alloy on the interface of the Cu-Al composite plate produced by horizontal continuous casting

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International Journal of Minerals,Metallurgy and materials 2022年第8期29卷 1578-1588页

作者： Jun Wang Fan Zhao Guoliang Xie Jiaxuan Xu Xinhua Liu Key Laboratory for Advanced Materials Processing(MOE) Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China State key laboratory for advanced Metals and materials University of Science and Technology BeijingBeijing 100083China

On the interface of the Cu-Al composite plate from horizontal continuous casting,the eutectic microstructure layer thickness ac-counts for more than 90%of the total interface thickness,and the deformation in rolling forming plays an important role in the quality of the composite plate.The eutectic microstructure material on the interface of the Cu-Al composite plate was prepared by changing the cooling rate of ingot solidification and the deformation in hot compression was investigated.The results show that when the deformation temperature is over 300℃,the softening effect of dynamic recrystallization ofα-Al is greater than the hardening effect,and uniform plastic deformation of eutectic microstructure is caused.The constitutive equation of flow stress in the eutectic microstructure layer was established by Arrhenius hy-perbolic-sine mathematics model,providing a reliable theoretical basis for the deformation of the Cu-Al composite plate.

关键词： horizontal continuous casting copper-aluminium composite plate composite interface eutectic microstructure material hot de-formation experiments constitutive equation

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Architecture Design and Interface Engineering of Self-assembly VS_(4)/rGO Heterostructures for Ultrathin Absorbent

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Nano-Micro Letters 2022年第4期14卷 222-237页

作者： Qi Li Xuan Zhao Zheng Zhang Xiaochen Xun Bin Zhao Liangxu Xu Zhuo Kang Qingliang Liao Yue Zhang Academy for advanced Interdisciplinary Science and Technology Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory for Advanced Energy Materials and TechnologiesSchool of Materials Science and EngineeringUniversity of Science

The employment of microwave absorbents is highly desirable to address the increasing threats of electromagnetic pollution.Importantly,developing ultrathin absorbent is acknowledged as a linchpin in the design of lightweight and flexible electronic devices,but there are remaining unprecedented challenges.Herein,the self-assembly VS_(4)/rGO heterostructure is constructed to be engineered as ultrathin microwave absorbent through the strategies of architecture design and interface engineering.The microarchitecture and heterointerface of VS_(4)/rGO heterostructure can be regulated by the generation of VS_(4) nanorods anchored on rGO,which can effectively modulate the impedance matching and attenuation constant.The maximum reflection loss of 2VS_(4)/rGO40 heterostructure can reach−43.5 dB at 14 GHz with the impedance matching and attenuation constant approaching 0.98 and 187,respectively.The effective absorption bandwidth of 4.8 GHz can be achieved with an ultrathin thickness of 1.4 mm.The far-reaching comprehension of the heterointerface on microwave absorption performance is explicitly unveiled by experimental results and theoretical calculations.Microarchitecture and heterointerface synergistically inspire multi-dimensional advantages to enhance dipole polarization,interfacial polarization,and multiple reflections and scatterings of microwaves.Overall,the strategies of architecture design and interface engineering pave the way for achieving ultrathin and enhanced microwave absorption materials.

关键词： Architecture design Interface Self-assembly Microwave absorption

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Alternating current electroluminescent fibers for textile displays

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National Science Review 2023年第1期10卷 14-16页

作者： Zhen Wang Xiang Shi Huisheng Peng State key laboratory of Molecular Engineering of Polymers Department of Macromolecular Scienceand Laboratory of Advanced Materials Fudan University

With the emerging 5G and Internet of Things,wearables are developing vigorously [1].Wearables are expected to be flexible,lightweight,breathable and comfortable to satisfy daily applications[2].Integrating electronic devices into textiles to form an electronic textile(e-textile) will simultaneously meet the above requirements and the need for daily clothes.E-textiles with functions of communicating,sensing and supplying power have been widely explored.

关键词： LIGHT-EMITTING-DIODES

Symmetry-breaking of LiMn6 hexatomic-ring in grain surface of Li2MnO3

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Journal of Energy Chemistry 2023年第6期81卷 110-117页

作者： Lihang Wang Shu Zhao Boya Wang Haijun Yu Institute of advanced Battery materials and Devices Faculty of Materials and Manufacturing Beijing University of Technology key laboratory of advanced Functional materials Ministry of Education Beijing University of Technology

LiMn6hexatomic-rings act as functional units in Li-rich layered oxides(LLOs), which determine the capacity, voltage, and structural stability of LLOs. However, the symmetry of the LiMn6hexatomic-ring is always broken, especially in the grain surface of LLOs, which will greatly affect its electrochemical performance. Herein, the symmetry-breaking of LiMn6hexatomic-ring in the grain surface of Li2MnO3was studied, and their effect on charge compensation mechanism and structure evolution behavior was thoroughly investigated. The results show that the electrochemical activity of the symmetry-broken LiMn6hexatomic-ring is higher than that of the unbroken LiMn6, and the former is more favorable for spinelization on the grain surface. Furthermore, the exposure proportion of crystallographic planes with different symmetry-broken LiMn6hexatomic-ring has also been discussed, which can be adjusted by changing the partial pressure of oxygen. The in-depth understanding of the symmetry-breaking of LiMn6hexatomic-ring will provide more targeted strategies for designing high-performance LLOs cathodes for lithium-ion batteries.

关键词： Li-rich layered oxides LiMn6 functional unit Symmetry-breaking Surface structure Density functional theory

调控ZIF-67衍生N-C/Co复合催化剂中的金属性Co^(0)实现高效光催化CO_(2)还原

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Science China materials 2022年第2期65卷 413-421页

作者：陈飞飞陈建丰冯亚南李凌云于岩 key laboratory of advanced materials Technologies College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

本文报道了由ZIF-67衍生而来的N掺杂C层包裹Co纳米颗粒(NC/Co)复合催化剂及其高效光催化CO_(2)还原性能.研究发现热解温度对N-C/Co复合催化剂的晶粒尺寸和金属性Co^(0)含量的调控具有关键作用,并在此基础上优化了催化剂的光催化活性.在... 详细信息

本文报道了由ZIF-67衍生而来的N掺杂C层包裹Co纳米颗粒(NC/Co)复合催化剂及其高效光催化CO_(2)还原性能.研究发现热解温度对N-C/Co复合催化剂的晶粒尺寸和金属性Co^(0)含量的调控具有关键作用,并在此基础上优化了催化剂的光催化活性.在较低热解温度(600℃)下获得的Co纳米颗粒尺寸较小,能够被N-C层良好保护,从而有效抑制表面氧化,使得N-C/Co-600样品中具有更高含量的金属性Co^(0).相反,NC/Co-700和N-C/Co-800样品中的表面氧化物CoO_(x)覆盖了内部Co核,不利于电荷分离和迁移.因此,N-C/Co-600样品表现出最佳的光催化活性.CO和H_(2)的产率分别高达1.62×10^(4)和2.01×10^(4)μmol g^(−1)h^(−1).另外,Co纳米颗粒使得复合催化剂具有磁性,能够在外加磁场辅助下,快速、简易地分离回收.本工作有望为MOF衍生碳/金属复合催化剂的设计提供参考依据.

关键词：金属性复合催化剂还原性能表面氧化物光催化 N掺杂电荷分离热解温度

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