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Metal-organic frameworks with mixed-ligands strategy as heterogeneous nucleation center to assist crystallization for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2023年第2期77卷 1-10,I0001页

作者： Yayu Dong Shuang Gai Jian zhang Ruiqing Fan Boyuan Hu Wei {1. Wei cao Jiaqi {1. Ke Zhu Debin Xia Lin Geng Yulin Yang MIIT key {1. of Critical materials technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina School of materials {1. and engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Deep-level defects and random oriented configuration in perovskite crystallization process would cause the nonradiative recombination and further affect the performance of perovskite solar cells(PSCs).Herein,two metal-organic frameworks(MOFs)with tunable Lewis-base passivation sites have been constructed(Cd-Httb and Cd-Httb-BDC,Httb=5-(4-(1.-1.2,4-triazole-1.yl)benzyl)-1.-tetrazole,BDC=1.4-dicarboxybenzene)to e{1.ate deep-level defects and simultaneously as nanostructured heterogeneous nucleation seed to assist the growth of large-grained perovskite *** with the control and Cd-Httb,Cd-Httb-BDC designed with mix-ligands strategy exhibited the enhanced inducted effect on the crystallization and nucleation of high-quality perovskite films during annealing ***,the resultant Cd-Httb-BDC-modified device achieved higher power conversion efficiency(PCE)(22.1.%)than the control(20.89%)and Cd-Httb(21.56%).Meanwhile,the unencapsulated Cd-Httb-BDC-modified device still maintained 90%of initial PCE after 1.00 h in ambient conditions and exhibited enhanced thermal stability(85℃ in N_(2) atmosphere).This work presented a successful example of mixligands strategy on construction of high-quality MOF-assisted perovskite films for high-efficient and stable PSCs.

关键词： Perovskite solar cells Metal organic frameworks Mixed ligands strategy Passivation Stability

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Three-dimensional Ag/carbon nanotube-graphene foam for high performance dendrite free lithium/sodium metal anodes

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Journal of materials {1. & technology 2023年第1期132卷 50-58页

作者： Bofang Tian Zhenxin Huang Xilian Xu Xiehong cao Hui {1. Tingting Xu Dezhi Kong Zhuangfei zhang Jie Xu Jinhao Zang Xinjian Li Ye {1. key {1. of Material Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China college of {1. science and engineering Zhejiang University of TechnologyHangzhou 310014China Center of Super-Diamond and Advanced Films(COSDAF)and Department of Chemistry City University of Hong Kong999077Hong Kong SARChina

Although lithium metal and sodium metal are promised as ideal anodes for lithium ion batteries(LIBs)and sodium ion batteries(SIBs),they still suffer from inevitable dendrite *** light of this,silver nanoparticles(Ag NPs)are sputtered onto three-dimensional carbon nanotube decorated graphene foam(3D CNT-GF)to construct superior 3D Ag/CNT-GF composite matrix for lithium metal anodes(LMAs)and sodium metal anodes(SMAs).With this design,lithiophilic/sodiophilic Ag NPs could provide favorable sites to guide Li/Na metal nucleation and growth,thus leading to low nucleation overpotentials,high Coulombic efficiency and long cycle ***,3D Ag/CNT-GF electrodes can stably cy-cle for 1.00 and 750 cycles at 3 mA cm^(−2)with 1.mAh cm^(−2)for SMAs and LMAs,*** attractively,it can also stably sustain 300 cycles(SMAs)and 500 cycles(LMAs)at a large current den-sity of 5 mA cm^(−2)with 1.mAh cm^(−2).The excellent electrochemical performance can be attributed to the lithiophilic/sodiophilic electrode surface,3D porous electrode structure and the dendrite-free mor-phology as demonstrated by ex-situ scanning electron microscopy(SEM)and in-situ optical microscopy ***,full cells based on Na@3D Ag/CNT-GF||Na 3 V 2(PO 4)3@carbon(NVP@C)and Li@3D Ag/CNT-GF||LiFePO 4(LFP)could deliver highly reversible capacities of 90.1.and 1.6.4 mAh g^(−1.,respec-tively,at 1.0 mA g^(−1.after 200 cycles for SIBs and LIBs,*** work demonstrates a novel 3D Ag/CNT-GF matrix for boosting Li/Na deposition stability for their future applications.

关键词： Li/Na metal anodes Lithiophilic/sodiophilic 3D Ag/CNT-GF nanostructure Dendrite-free morphology Uniform deposition In-situ optical microscopy investigation

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Metal-organic decomposition growth of thin film metastable perovskite nickelates with kinetically improved quantum transitions

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International Journal of Minerals,Metallurgy and materials 2023年第12期30卷 2441-2450页

作者： Haiyan Li Yuzhao wang Fanqi Meng Wei Mao Xingzhong {1. Yi Bian Hao zhang Yong Jiang Nuofu Chen Jikun Chen Beijing Advanced Innovation Center for materials Genome {1. School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China School of Renewable Energy North China Electric Power UniversityBeijing 102206China School of materials {1. and engineering Peking UniversityBeijing 100871China School of engineering The University of Tokyo2-11-16 YayoiBunkyo-kuTokyo 113-0032Japan Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

The multiple quantum transitions within d-band correlation oxides such as rare-earth nickelates(RENiO_(3))triggered by critical temperatures and/or hydrogenation opened up a new paradigm for correlated electronics applications,*** electric field sensor,bio-sensor,and neuron synapse logical ***,these applications are obstructed by the present ineffectiveness in the thin film growth of the metastable RENiO_(3)with flexibly adjustable rare-earth compositions and electronic ***,we demonstrate a metal-organic decompositions(MOD)approach that can effectively grow metastable RENiO_(3)covering a large variety of the rare-earth composition without introducing any vacuum *** the previous chemical growths for RENiO_(3)relying on strict interfacial coherency that limit the film thickness,the MOD growth using reactive isooctanoate percussors is tolerant to lattice defects and therefore achieves comparable film thickness to vacuum *** indicated by positron annihilation spectroscopy,the RENiO_(3)grown by MOD exhibit large amount of lattice defects that improves their hydrogen incorporation amount and electron transfers,as demonstrated by the resonant nuclear reaction analysis and near edge X-ray absorption fine structure *** effectively enlarges the magnitude in the resistance regulations in particular for RENiO_(3)with lighter RE,shedding a light on the extrinsic regulation of the hydrogen induced quantum transitions for correlated oxides semiconductors kinetically via defect engineering.

关键词： metal-insulator transition rare earth nickelates lattice defects hydrogen incorporation metal-organic decomposition

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Bilayer carbon-based structure with the promotion of homogenous nucleation for lithium metal anodes

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science{1.(Technological sciences) 2022年第7期65卷 1558-1566页

作者： SHAO YeQing XIE YongHui YANG Yang cao JiaQi LI XiuWan LI {1.Yang zhang QiaoLi CHENG ShouLin CHENG ShuYing {1. XingHui college of Physics and Information {1. Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhou 350108China Fujian science&{1. Innovation laboratory for Optoelectronic Information of china Fuzhou 350108China Fujian Provincial key {1. of Light Propagation and Transformation College of Information Science and EngineeringHuaqiao UniversityXiamen 361000China Jiangsu Collaborative Innovation Center of Photovoltaic science and {1. Changzhou 213000China Fujian key {1. of Electrochemical Energy Storage materials Fuzhou UniversityFuzhou 350002China

Lithium metal anodes (LMAs) are considered as the promising alternatives for next-generation high energy density batteries,but are still hampered by the severe growth of uncontrollable lithium *** growth of lithium dendrites induces poor cycling lifespan and serious safety concerns,dragging lithium metal batteries out of practical *** designed a bilayer carbonbased structure covered with Co/C nanosheets and vertical graphene sheets (VGS).The enormous specific surface area and uniformly distributed Co nanoparticles of the CC@Co/C-VGS host are derived from its unique design,which can reduce local current density and nucleation overpotential,resulting in a dendrite-free morphology and exceptional cycling *** cells exhibit over 400 cycles (800 h) at a high current density/capacity of 1. mA cm^(-2)/1. mA h cm^(-2).Full cells using LiFePO_(4)as the cathode have an enhanced rate capability and a prolonged lifespan,reaching 90 mA h g^(-1.after 1.00 cycles at 2 C with 73.5% capacity *** unique design sheds light on developing high-performance LMAs.

关键词： lithiophilic material bilayer carbon structure graphene MOF lithium metal anode

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One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption

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Nano-Micro Letters 2022年第10期14卷 260-272页

作者： Bintong Yang Jiefeng Fang Chunyang Xu Hui cao Ruixuan {1. Biao Zhao Mengqiu Huang Xiangyu wang Hualiang Lv Renchao Che laboratory of Advanced {1. Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438People’s Republic of China Willian G.Lowrie Department of Chemical and Biomolecular engineering The Ohio State UniversityColumbusOH 43210USA Zhejiang laboratory Joint-Research Center for Computational MaterialsHangzhou 311100People’s Republic of China

Rational designing of one-dimensional(1.)magnetic alloy to facilitate electromagnetic(EM)wave attenuation capability in low-frequency(2-6 GHz)microwave absorption field is highly desired but remains a significant *** this study,a composite EM wave absorber made of a FeCoNi medium-entropy alloy embedded in a 1. carbon matrix framework is rationally designed through an improved electrospinning *** 1.-shaped FeCoNi alloy embedded composite demonstrates the high-density and continuous magnetic network using off-axis electronic holography technique,indicating the excellent magnetic loss ability under an external EM ***,the in-depth analysis shows that many factors,including 1. anisotropy and intrinsic physical features of the magnetic medium-entropy alloy,primarily contribute to the enhanced EM wave absorption ***,the fabricated EM wave absorber shows an increasing effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 ***,this study opens up a new method for the design and preparation of high-performance 1. magnetic EM absorbers.

关键词： Medium-entropy magnetic alloy One-dimension Off-axis electronic holography technique Improved electrospinning Lower-frequency electromagnetic wave absorption

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Enhanced desulfurization performance of hybrid membranes using embedded hierarchical porous SBA-1.

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Frontiers of Chemical science and {1. 2020年第4期14卷 661-672页

作者： Ye zhang Jian Song Josue Quispe Mayta Fusheng Pan Xue Ga Mei Li Yimeng Song Meidi {1. Xingzhong cao Zhongyi Jiang School of Chemical engineering and {1. Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical science and {1.(Tianjin) Tianjin 300072China Multi-discipline Research Division Institute of High Energy PhysicsChinese Academy of SciencesBejing 100049China

The utilization of materials with a hierarchical porous structure as multi-functional additives is highly attractive in the preparation of hybrid *** this study,novel hybrid membranes are designed by embed-ding hierarchical porous Santa Barbara Amorphous 1.(SBA-1.)with a dual-pore architecture(micropores and mesopores)for pervaporation *** SBA-1. with cylindrical mesopores provides molecular transport expressways to ensure improved permeability,while micropores on the wall have molecular sieving effects that are essential for the enhancement of permselectivity of thiophene *** thiophene/n-octane mixture as a model system,the hybrid membrane with embedded 6 wt-%SBA-1. exhibits optimal pervaporation desulfurization performance with a permeation flux of 22.07 kg·m^-2·h^-1.and an enrichment factor of ***,the detailed structure and properties of hybrid membranes are systematically *** study demonstrates the immense potential of hierarchical porous materials as additives in membranes to simultaneously increase permeability and permselectivity.

关键词： hybrid membranes hierarchical porous SBA-1. sieving effect pervaporation desulfurization

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Large photovoltaic effect with ultrahigh open-circuit voltage in relaxor-based ferroelectric Pb(In_(1.2)Nb_(1.2))O_(3)-Pb(Mg_(1.3)Nb_(2/3))O_(3)-PbTiO_(3)ceramics

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Journal of materials {1. & technology 2022年第9期104卷 119-126页

作者： Xudong Qi Kai Li Enwei Sun Bingqian Song Da Huo Jiaming Li Xianjie wang Rui {1. Bin Yang Wenwu cao Condensed Matter science and {1. Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin 150080China key {1. for Photonic and Electronic Bandgap materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China School of Physics Harbin Institute of TechnologyHarbin 150001China Department of Mathematics and materials Research Institute The Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA

Recently,the anomalous photovoltaic effect of ferroelectric materials has attracted considerable attention in the construction of efficient solar cells owing to the above-bandgap photovoltage of these *** this study,we investigate the anomalous photovoltaic effect of relaxor-based ferroelectric Pb(In_(1.2)Nb_(1.2))O_(3)-Pb(Mg_(1.3)Nb_(2/3))O_(3)-PbTiO_(3)(PIMN-PT)ceramics with large remnant polarization and a narrow optical *** photovoltaic performance with an ultrahigh open-circuit voltage of 23 V(575 V/cm)is achieved,which is higher than the open-circuit voltages of all reported polycrystalline materials with similar *** phase structure,microstructure morphology,domain structure,ferroelectric and optical characteristics are analyzed,which could provide clues to the origin of the ultrahigh open-circuit voltage of PIMN-PT *** results suggest that the relaxor-based ferroelectric PIMNPT system is a potential candidate for photovoltaic solar energy conversion devices.

关键词： Photovoltaic Ferroelectric PIMN-PT ceramics Open-circuit voltage Domain structure

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苝二酰亚胺共价有机框架超级还原剂用于高效光催化芳基卤化物还原反应

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Chinese Journal of Catalysis 2024年第2期57卷 171-183页

作者：金昱丞刘小琳曲琛李长骏王海龙詹晓宁曹昕怡李晓锋于宝秋张琪齐冬冬姜建壮北京科技大学化学系功能分子与晶态材料科学与应用北京市重点实验室北京材料基因组工程高级创新中心北京100083 北京化工大学材料科学与工程学院有机-无机复合材料国家重点实验室北京100029

自由基离子型分子光催化剂被证实是具有很强还原能力的可见光超级还原剂,它们在促进惰性的有机反应(例如将芳基卤化物还原为芳基自由基)方面具有突出的催化能力.然而,由于分子聚集严重地降低其催化活性,因而针对非均相超级还原剂的研究... 详细信息

自由基离子型分子光催化剂被证实是具有很强还原能力的可见光超级还原剂,它们在促进惰性的有机反应(例如将芳基卤化物还原为芳基自由基)方面具有突出的催化能力.然而,由于分子聚集严重地降低其催化活性,因而针对非均相超级还原剂的研究较少.本文提出了一种新的方法来解决上述问题,通过溶剂热反应将具有连续光诱导电子转移机制的苝二亚胺超级还原剂(PDI)异质化为二维给体-受体(D-A)共价有机框架(COFs).即以N,N'-双(3-戊基)-2,5,8,1.-四(4-甲酰基苯基)苝二酰亚胺(TFPDI)与1.3,6,8-四(4-氨基苯基)芘\(Py-TA)或2,3,6,7-四(4-氨基基苯基)四硫富瓦烯(TTF-TA)为原料,通过溶剂热反应分别制备了两种高晶态二维D-A型COF结构:USTB-21.USTB-22,并用于芳基氯化物、芳基溴化物和芳基碘化物的光催化还原反应.X射线衍射和理论模拟结果表明,USTB-21.USTB-22具有二维共价键连接的层状结构,分别呈现AA和AB的堆积方式.在各自最佳反应条件下,COFs显示出与均相催化剂相媲美的可见光催化性能,可高效地还原一系列芳基氯化物、芳基溴化物和芳基碘化物.其中,USTB-22在可见光驱动不同的芳香卤化物还原时,3 h内的转化率高达99%.瞬态吸收光谱结果表明,相比于均相催化剂(N,N'-双(2,6-二异丙基苯基)苝二酰亚胺),自由基阴离子激发态寿命是1.0 ps,USTB-21.USTB-22具有更长的激发态寿命,分别为21.和260 ps.顺磁共振波谱测试结果证明,自由基阴离子光催化剂异质化成晶态D-A型COFs能够有效地促进电荷分离效率和延长激发态寿命.上述结果说明,USTB-22具有良好的光催化性能主要是因为其激发态寿命较长以及电荷分离效率较好.理论模拟结果表明,所制备的材料具有D-A型的电子结构.对COF的模型片段进行理论计算,揭示了各步反应路径中吉布斯自由能的变化,从而进一步阐明了光催化机理.在催化反应过程中,芳基卤化物还原途径可分为两个阶段:第一阶段为双光子能量输入和光驱电子转移,包括光子捕获和(TTF-PDI•−)^(*)产生以及光驱动电子转移到4-溴苯乙酮底物;第二阶段为能量输出,用于还原4-溴苯乙酮底物生成苯乙酮.综上所述,本文通过溶剂热反应将具有连续光诱导电子转移机制的苝二亚胺超级还原剂异质化为二维D-A型COFs结构.该结构在芳基氯化物、芳基溴化物和芳基碘化物等的光催化还原反应中,可很好地促进电子从光催化剂转移到反应物,进而显著提高光催化反应的活性和选择性;本研究对于未来设计新型自由基离子型高效光催化剂提供了新的思路.

关键词：苝酰亚胺共价有机骨架光催化剂均相芳基卤化物的还原

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Rapid Synthesis and Photoluminescence Properties of Eu-doped ZnO Nanoneedles via Facile Hydrothermal Method

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Chemical Research in Chinese Universities 2014年第4期30卷 538-542页

作者： LANG Jihui wang Jiaying {1. Qi XU Songsong HAN Qiang {1. Yan ZHAI Hongju cao Jian YAN Yongsheng YANG Jinghai Scholl of Chemistry and Chemical engineering Jiangsu University Zhenjiang 212013 P. R. China Institute of Condensed State Physics key {1. of Functional materials Physics and Chemistry Ministry of Education Jilin Normal University Siping 136000 P. R. China

Eu-doped ZnO nanoneedles with different doping concentrations were prepared via the facile hydrothermal *** crystal structure,morphology and photoluminescence property of the ZnO nanoneedles were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,X-ray photoelectron spectroscopy（XPS）,photoluminescence spectroscopy（PL） and Raman *** results show that the europium ions are incorporated into the crystal lattice of ZnO matrix in trivalent *** nanoneedles are 2-3 μm in length and 1.0 nm in the tip *** and Raman measurements indicate that higher Eu^3＋ doping concentration may destroy the crystallization of the nanoneedles and decrease the ratio of IUV/IDLE,which is mainly due to the more defects in the doped ZnO *** the characteristic red emissions of Eu^3＋ ions are found by the PL spectroscopy with the Eu^3＋doping concentration increasing,which are attributed to the ^5D0→^7F0,^5D0→^7F1.and ^5D0→^7F2 transitions.

关键词： ZnO nanoneedle Hydrothermal method Europium ion Crystal structure Photoluminescence property

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Modulating vectored non-covalent interactions for layered assembly with engineerable properties

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Bio-Design and Manufacturing 2022年第3期5卷 529-539页

作者： Jiahao zhang Sarah Guerin Haoran Wu Bin Xue Yi {1. Syed A.M.Tofail Yancheng wang Damien Thompson Wei wang Kai Tao Deqing Mei Ehud Gazit State key {1. of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Future science Research Institute Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311200China Department of Physics and Bernal Institute University of LimerickCastletroyCo.LimerickLimerick V94T9PXIreland National laboratory of Solid State Microstructure Department of PhysicsNanjing UniversityNanjing 210093China key {1. of Advanced Manufacturing technology of Zhejiang Province School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China School of Molecular Cell Biology and Biotechnology George S.Wise Faculty of Life SciencesTel Aviv University6997801 Tel AvivIsrael Department of materials {1. and engineering Iby and Aladar Fleischman Faculty of EngineeringTel Aviv University6997801 Tel AvivIsrael

Vectored non-covalent interactions—mainly hydrogen bonding and aromatic interactions—extensively contribute to(bio)-organic self-assembling processes and significantly impact the physicochemical properties of the associated ***,vectored non-covalent interaction-driven assembly occursmainly along one-dimensional(1.)or three-dimensional(3D)directions,and a two-dimensional(2D)orientation,especially that of multilayered,graphene-like assembly,has been reported *** this present research,by introducing amino,hydroxyl,and phenyl moieties to the triazine skeleton,supramolecular layered assembly is achieved by vectored non-covalent *** planar hydrogen bonding network results in high stability,with a thermal sustainability of up to about 330°C and a Young’s modulus of up to about 40 *** introducing wrinkles by biased hydrogen bonding or aromatic interactions to disturb the planar organization,the stability ***,the intertwined aromatic interactions prompt a red edge excitation shift effect inside the assemblies,inducing broad-spectrum fluorescence covering nearly the entire visible light region(400–650 nm).We show that bionic,superhydrophobic,pillar-like arrays with contact angles of up to about 1.0°can be engineered by aromatic interactions using a physical vapor deposition approach,which cannot be realized through hydrogen *** findings show the feasibility of 2D assembly with engineerable properties by modulating vectored non-covalent interactions.

关键词： Vectored non-covalent interactions Layered assembly Supramolecular graphene Engineerable properties Physical vapor deposition

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