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Tailored electronegative-driven MOF channels with bimetallic coordination for synergistic Zn 2+ transport enabling dendrite-free Zn anodes

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Energy Storage materials 2025年 80卷

作者： Ming Chen Wei Fu Chunchao Hou Yunhai Zhu Fanlu Meng School of Materials Science and Engineering Ocean University of China Qingdao 266404 China State Key Laboratory of New Textile Materials and Advanced Processing Wuhan Textile University Wuhan 430200 China

Zinc anodes in aqueous zinc-metal batteries frequently suffer from dendrite growth and extensive side reactions, largely due to a complex electrode-electrolyte interface and uncontrolled ion transport. To enable a robust interface and uniform zinc ion deposition, we systematically introduce a functionalized Zr-Zn bimetallic UiO-66 (UCOOH-10 Zn) artificial layer on zinc anodes. The intrinsic electronegativity of carboxyl group in UCOOH-10 Zn enhances Zn 2+ trapping and transport within its channels across the anode-electrolyte interface. The more electronegative Zn sites in the bimetallic structure facilitate charge transfer near Zn clusters and improve Zn 2+ migration, collectively promoting uniform Zn deposition. Furthermore, the UCOOH-10 Zn layer suppresses anion-induced surface passivation and mitigates interfacial side reactions, thereby enhancing the electrochemical stability of zinc anodes. As a result, the UCOOH-10 Zn coated Zn anode exhibits stable cycling 4000 h at a low overpotential of 47.9 mV under 1 mAh cm −2 . Moreover, a cell assembled with the UCOOH-10Zn@Zn anode and an NH 4 V 4 O 10 cathode achieves 5000 cycles at a current density of 10 A g −1 . This study underscores the critical role of UCOOH-10 Zn as a protective layer and highlights its potential in enabling more reliable and long-lasting aqueous zinc-metal batteries.

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Aqueous Sn-S Complex Derived Electron Selective Layer for Perovskite Solar Cells

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Journal of Wuhan University of technology(materials Science) 2020年第2期35卷 272-279页

作者： LI Zhi SHEN Wenjian ZHAO Juan YING Hangkai WU Zhengli LIU Yifan LI Wangnan KU Zhiliang PENG Yong HUANG Fuzhi CHENG Yibing ZHONG Jie FU Zhengyi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Hubei Research Center for New Energy&Intelligent Connected Vehicle Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hu-bei University of Arts and ScienceXiangyang 441053China

A novel aqueous Sn-S complex solution was applied as precursor to fabricate SnO2 electron selective layers (ESLs) for the hybrid perovskite solar cells (PSCs).The tin and sulfur powder were directly dissolved in a (NH4)2S water solution to form Sn-S *** depositon and annealing,the SnO2 film was formed,presenting as a low cost and enviromental friendly method for preparation of *** films showed excellent transmittance at visible wavelength ***,the method exhibited high compatibility for doping using Cu,Cd,Li,and Zn *** doping (0.05 M) in the as-prepared SnO2 ESL significantly improved perovskite solar cells (PSCs) *** highest PCE of 13.17% was achived with 15% enhancement compared to that of undoped SnO2 ESL ***4 modifications on SnO2 film improved photovoltaic performance to 14.45%,but resulted in the poor long-term stability,around 80% more degredation than that of PSCs based on Zn-doped SnO2 films.

关键词： perovskite solar cell aqueous solution SnO2 Sn-S complex electron selective layer

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Membrane catalysts eliminate trace pollutants

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Chem 2022年第6期8卷 1551-1553页

作者： Jing Li Xiao-Yu Yang Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan 430081 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA

The presence of residues in products generated by high-efficiency catalytic reactions is detrimental. In a recent work published in Nature Nanotechnology by Andrea Schäfer and colleagues, membrane catalysts are shown to promote processes while enhancing water purification by degradation of micropollutants via filtration-driven effective collision.

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Widely tunable optical properties via oxygen manipulation in an amorphous alloy

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Science China materials 2021年第9期64卷 2305-2312页

作者： Ying-qi Zhang Li-ying Zhou Sheng-ye Tao Yu-zhang Jiao Jin-feng Li Kai-ming Zheng Yuan-chao Hu Kai-xuan Fang Cheng Song Xiao-yan Zhong Limei Xu Ke-Fu Yao Zheng-jun Zhang Na Chen Key Laboratory for Advanced Materials Processing Technology(MOE) The State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China International Center for Quantum Materials Peking UniversityBeijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100871China Institute of Materials China Academy of Engineering PhysicsMianyang 621907China Institute of Industrial Science University of Tokyo4-6-1 KomabaMeguro-kuTokyo 1538505Japan Key Laboratory for Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China National Center for Electron Microscopy in Beijing Key Laboratory of Advanced Materials(MOE)The State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong KongChina

The ability to widely tune the optical properties of amorphous alloys is highly desirable especially for their potential applications in optoelectronic *** this work,we demonstrate that introducing oxygen into an amorphous alloy system of Co-Fe-Ta-B enables the formation of various amorphous derivatives ranging from metals to semiconductors,and eventually to *** oxygencontaining amorphous derivatives gradually become transparent with the opened bandgaps,leading to a continuous increase in their optical ***,the reflective metal-type amorphous alloy and transparent insulator-type amorphous oxide of the system can be integrated together to realize the full-color tuning over the entire visible spectral *** provides a new way to develop large-area color coatings with high design flexibility and full-color *** envisage that the design concept proposed in this work is also applicable to many other amorphous alloy systems,from which all types of amorphous materials including alloys,semiconductors and insulators may be developed to show unprecedented optical functionalities.

关键词： amorphous alloy oxygen manipulation amorphous oxide optical properties

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Achieving Wideband Electromagnetic Wave Absorbing Performance for Pmma-Based Composites Foam by Designing the Alternating Directional (Ad) Microporous Structure

SSRN

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SSRN 2023年

作者： Zhou, Danfeng Yu, Zirui Yuan, Huan Luo, Guoqiang Hu, Ruofei Jiang, Xueliang Shen, Qiang Hubei Key Laboratory of Plasma Chemistry and New Materials School of Material Science and Engineering Wuhan Institute of Technology Hubei Wuhan430205 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China School of Automotive Engineering Wuhan University of Technology Wuhan430070 China Department of Food Science & Chemical Engineering Hubei University of Arts and Science Xiangyang441053 China

Good impedance matching and attenuation ability of electromagnetic wave absorbing (EMA) materials are required to broaden the effective absorbing bandwidth (EAB) and lower minimum reflection loss (RLmin), achieving high EMA performance. Here we report a PMMA- based composite foam with alternating and directional (AD) microporous structure with broadened EAB of 3.53 GHz (8.49-12.02 GHz) and lowers RLmin of -19.35 dB, was manufactured via the one-step physical constraint foaming technology. Structural studies reveal that the AD microporous structure can induce the CNTs oriented distribution to improve effective concentration of CNTs, achieving excellent impedance matching. Meanwhile, it can also generate a large number of parallel-plate capacitors among the multiple interfaces to promote interfacial polarization, including enhancement of multiple reflection and scattering of electromagnetic wave at the multiple interfaces, endowing composites foam with high attenuation ability. This study lays the foundation for rational design and synthesis of EMA materials for broadband EMA performance. © 2023, The Authors. All rights reserved.

关键词： Electromagnetic wave absorption

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Influence of Fe substitution at Al-site on the microstructure and thermophysical properties of garnet-type (Y0.4Er0.6)3Al5O12 ceramics

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Ceramics International 2025年

作者： Wang, Xuanli Wang, Jun Xie, Min Wang, Zhigang Zhang, Yonghe Song, Xiwen School of Materials Science and Engineering Inner Mongolia University of Science and Technology Baotou014010 China Inner Mongolia Key Laboratory of Advanced Ceramic Material and Devices Baotou014010 China Ministry of Education Baotou014010 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China Inner Mongolia North Heavy Industry Group Co. Ltd. Baotou014010 China Department of Chemical Engineering Ordos Vocational College Ordos017000 China

In this study, a series of (Y0.4Er0.6)3(Al1-xFex)5O12 (x = 0, 0.2, 0.4, 0.6, 0.8 and 1.0) ceramics were prepared by solid phase synthesis. The effects of Fe doping on the phase structure, lattice occupancy, Raman shift, ionic valence state, micromorphology and thermophysical properties of the ceramics were systematically investigated. The results show that all the (Y0.4Er0.6)3(Al1-xFex)5O12 ceramics exhibit a single Y3Al5O12 phase and the valence state of iron is +3. With the increase of Fe doping concentration, both the lattice constant and cell volume gradually expand, which is attributed to the substitution of Al3+ (smaller ionic radius) by Fe3+ (larger ionic radius). This substitution induces lattice distortion that accelerates the sintering process, resulting in an increase in both ceramic density and grain size. In terms of thermophysical properties, significant improvements were observed compared to pure Y3Al5O12 and (Y0.4Er0.6)3Al5O12 ceramics. Specifically, thermal conductivity decreases, and the thermal expansion coefficient increases with higher Fe doping levels. The (Y0.4Er0.6)3(Al0.2Fe0.8)5O12 ceramic exhibits the lowest thermal conductivity (1.31 W/m·K at 1100 °C), approximately 11.5 % lower than that of (Y0.4Er0.6)3Al5O12 (1.48 W/m·K at 1100 °C). Additionally, (Y0.4Er0.6)3Fe5O12 ceramic demonstrates the highest coefficient of thermal expansion (11 × 10−6 K−1 at 1200 °C), which is around 36.3 % greater than that of (Y0.4Er0.6)3Al5O12 (8.07 × 10−6 K−1 at 1200 °C). © 2025

关键词： Sintering

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Strain manipulation of ferroelectric skyrmion bubbles in a freestanding PbTiO3 film: A phase field simulation

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Physical Review B 2022年第22期105卷 224101-224101页

作者： Yixuan Zhang Qian Li Houbing Huang Jiawang Hong Xueyun Wang School of Aerospace Engineering Beijing Institute of Technology Beijing 100081 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing 100081 China

So far nanoscale topological polar structures have been mainly observed in ferroelectric superlattices, nanodots, and complex heterostructures, originating from the intricate interplay of built-in electric field, polarization, strain, and their gradient-related energies. However, solid substrates hinder the continuous strain manipulation of the ferroelectric topological textures. Recently, a breakthrough in fabricating freestanding films has demonstrated the possibility of continuous strain manipulation, but there has been little experimental or theoretical investigation of whether polar topological structures exist in freestanding films. Herein, by performing phase field simulation on (PbTiO3)20/(SrTiO3)10 freestanding bilayers, we observed the stabilized ferroelectric skyrmion bubbles in a ferroelectric layer. A thickness-dependent phase diagram indicates that the skyrmion bubbles exist when the ferroelectric layer is between eight and 30 unit cells. Meanwhile, we demonstrated that the uniaxial strain is an effective way to manipulate the skyrmion bubble in freestanding films, which not only induces consolidation and rearrangement of skyrmion bubbles, but also induces a phase transition from the topological skyrmion bubble state to a standard a1/a2 domain state. These results provide us guidance with a mechanical approach to control topological polar structures in freestanding films.

关键词： Electric polarization Ferroelectric domains Phase-field modeling

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Interface engineering of phase separation in SrRuO3/SrTiO3 hybrid superlattices

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Physical Review B 2022年第2期106卷 024424-024424页

作者： Zhangzhang Cui Yingying Zhang Xiaofang Zhai Hanghui Chen Yi-De Chuang Jinghua Guo Zhengping Fu Zhengcao Li Yalin Lu Hefei National Research Center for Physical Sciences at the Microscale and Department of Materials Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China Anhui Laboratory of Advanced Photon Science and Technology University of Science and Technology of China Hefei Anhui 230026 China State Key Laboratory for New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of Education School of Materials Science and Engineering Tsinghua University Beijing 100084 China School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China NYU-ECNU Institute of Physics NYU Shanghai Shanghai 200122 China Department of Physics New York University New York New York 10003 USA Advanced Light Source Lawrence Berkeley National Laboratory Berkeley California 94720 USA

Most observed phase separation phenomena in complex oxides occur in systems with chemical dopants or structural defects, and theories have established the strong connection between phase separation and the random distribution of chemical dopants. Recent experiments on fabricated high-quality oxide superlattices also confirmed that the phase separation is suppressed in the clean systems without chemical disorders. Thus far, phase separation in strongly correlated oxides without the need of chemical dopants or structural defects has not been fully demonstrated. Here, we have built chemically ordered hybrid superlattices using prototypical SrRuO3 and SrTiO3 perovskite oxides. Contrary to previous understandings, we observe phase separation of two magnetic phases with different spin easy axes. We elucidate this phenomenon through first-principles calculations that the hybrid superlattices have a spontaneous structural instability, leading to a coexistence of ferromagnetic and antiferromagnetic phases. Our findings provide an alternative pathway other than chemical doping to introduce phase separation in correlated oxides and imply that phase separation can exist in clean systems without the need of chemical disorders.

关键词： Magnetic anisotropy Magnetotransport Phase separation Complex oxides Superlattices

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Saxs "Unveils" Porous Anodes for Potassium-Ion Batteries: Dynamic Evolution of Pore Structure in Fe@Fe 2 O 3 /Pcnfs Composite Nanofibers

SSRN

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SSRN 2023年

作者： Shi, Haiting Jinxi, Bao Xianyan, Wu Feng, Tian Shuaitong, Liang Shao, Ruiqi Jingjing, Shi Yingjie, Dong Xu, Zhiwei State Key Laboratory of Separation Membranes and Membrane Processes School of Textile Science and Engineering Tiangong University Tianjin300387 China College of Materials and Textile Engineering Nanotechnology Research Institute Jiaxing University Jiaxing314001 China Shanghai Synchrotron Radiation Facility Zhangjiang Lab Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai201204 China International Joint Laboratory of New Textile Materials and Textiles of Henan Province Zhongyuan University of Technology Zhengzhou450007 China

The porous structure plays a key role in improving the electrochemical performance of composite nanofibers. However, the dynamic evolution of the pore structure and its action during the ion intercalation/extraction process for the negative electrode is not clear. Herein, porous carbon nanofibers composites (Fe@Fe2O3/PCNFs) were prepared as the negative electrode materials for sodium/potassium-ion batteries. Electrochemical test findings revealed that the composites had good electrochemical characteristics, and the porous structure provided more pseudo-capacitive behaviors for the composite electrodes. After 1500 discharge/charge cycles at a current density of 1000 mA g-1, the specific capacities of the potassium-ion and sodium-ion batteries were 144.8 mAh g-1 and 157.8 mAh g-1, respectively. We innovatively used the synchrotron small-angle X-ray scattering (SAXS) technique to systematically investigate the kinetic process of potassium formation in composites and showed that the kinetic process of potassium reaction in composites can be divided into four stages, and the pores with smaller average diameter distribution are more sensitive to the changes of the reaction process. This work provides a new way to study the deposition kinetics of sodium/potassium in porous materials, which facilitates the design of porous structures and realizes the development of alkali metal ion-anode materials with higher energies. © 2023, The Authors. All rights reserved.

关键词： Potassium

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Holey platinum nanotubes for ethanol electrochemical reforming in aqueous solution

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Science Bulletin 2021年第20期66卷 2079-2089,M0003页

作者： Tian-Jiao Wang Hui-Ying Sun Qi Xue Ming-Jun Zhong Fu-Min Li Xinlong Tian Pei Chen Shi-Bin Yin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004China

The catalytic/electrocatalytic performance of platinum(Pt)nanostructures highly relates to their ***,we propose a facile self-template pyrolysis strategy at high temperature to synthesize one-dimensionally holey Pt nanotubes(Pt-hNTs)using Pt^(Ⅱ)-dimethylglyoxime complex(Pt^(Ⅱ)-DMG)nanorods as the reaction *** coordination capability of DMG results in the generation of Pt^(Ⅱ)-DMG nanorods,whereas the reducibility of DMG at high temperature leads to the reduction of Pt^(Ⅱ)species in Pt^(Ⅱ)-DMG *** the reaction process,the inside-out Ostwald ripening phenomenon leads to the hollow morphology of *** from the physical characteristics of hollow and holey structure,Pt-hNTs with clean surface show superior electroactivity and durability for catalyzing ethanol electrooxidation as well as hydrogen evolution reaction in alkaline *** optimized experimental conditions,the constructed symmetric Pt-hNTs||Pt-hNTs ethanol electrolyzer only requires an electrolysis voltage of 0.40 V to achieve the electrochemical hydrogen production,demonstrating a highly energy saving strategy relative to traditional water electrolysis.

关键词： Holey platinum nanotubes High temperature pyrolysis Ethanol electrochemical reforming Ethanol oxidation reaction Hydrogen production

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