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中国化学会第十届全国无机化学学术会议

作者： Liqiang (Mai) State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

One-dimensional nanomaterials can offer large surface area, facile strain relaxation upon cycling and efficient electron transport pathway to achieve high electrochemical performance. Hence, nanowires have attracted increasing interest in energy related fields. We designed the single nanowire electrochemical device for in situ probing the direct relationship between electrical transport, structure, and electrochemical properties of the single nanowire electrode to understand intrinsic reason of capacity fading. The results show that during the electrochemical reaction, conductivity of the nanowire electrode decreased, which limits the cycle life of the devices. We have developed a facile and high-yield strategy for the oriented formation of CNTs from metal-organic frameworks（MOFs）. The appropriate graphitic N doping and the confined metal nanoparticles in CNTs both increase the densities of states near the Fermi level and reduce the work function, hence efficiently enhancing its oxygen reduction activity. In addition, we demonstrated the critical role of structural HO. The results suggest that the HO-solvated Zn possesses largely reduced effective charge and thus reduced electrostatic interactions with the VO framework, effectively promoting its diffusion. We also identified the exciting electrochemical properties（including high electric conductivity, small volume change and self-preserving effect） and superior sodium storage performance of alkaline earth metal vanadates through preparing CaVO nanowires. Furthermore, a novel assembled nanoarchitecture was also presented, which consists of VO nanoparticles embedded in amorphous carbon nanotubes that are then coassembled within a reduced graphene oxide network. The naturally integrated advantages of each subunit exhibit highly stable and ultrafast sodium-ion storage. Our work presented here can inspire new thought in constructing novel one-dimensional structures and accelerate the development of energy storage applica

关键词： One-dimensional nanomaterials energy storage

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Phase Compositions and Mechanical Properties of Chinese Blue-and-white Porcelain

Phase Compositions and Mechanical Properties of Chinese Blue...

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作者： Gangqin Shao Xiaobin Zhong Xinyi Feng Yong Zhang Can Zhu Zhenchang Zhong Jun Wang Qi Liu Hongbin Li Zhaobiao Qiu Youyan Zhong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Chinese blue-and-white porcelain has engendered a unique appeal and gained a worldwide popularity throughout history, with its unmatched translucency of the body, the shine of the glaze, the permanency of the variegated blue tints, the fineness of decorations and the mysteries behind the manufacturing. Mechanical properties are vital for the manufacturing, transportation and usage of this kind of stunner. In this work, the mechanical properties of Chinese blue-and-white porcelain with Hakka style and Dabu geographical indication were optimized, based on the distinct characteristics of local resources.

关键词： CSW Phase Compositions and Mechanical Properties of Chinese Blue-and-white Porcelain

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Flexible quasi-solid-state dual-ion asymmetric supercapacitor based on Ni（OH）2 and Nb2O5 nanosheet arrays

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Green Energy & Environment 2019年第4期4卷 382-390页

作者： Xiaolan Deng Yuqi Jiang Zengxi Wei Minglei Mao Ramyakrishna Pothu Hongxia Wang Caiyun Wang Jinping Liu Jianmin Ma School of Physics and Electronics Hunan UniversityChangsha410082China School of Chemistry Chemical Engineering and Life Science State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan430070China School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD4001Australia ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research InstituteAIIMInnovation CampusUniversity of WollongongNorth WollongongNSWAustralia Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou450002China

Increasing the energy density, power density as well as widening the operation voltage are essential to electrochemical capacitors to meet the practical energy demands. Herein, a novel flexible quasi-solid-state dual-ion asymmetric supercapacitor(ASC) with Ni(OH)2 and Nb2O5 nanosheets directly grown on stainless steel mesh is developed. In the dual-ion ASC, Nb2O5 negative and Ni(OH)2 positive electrodes react with Li+ and OH- respectively in alkaline gel electrolyte to store energy, which is quite different from conventional alkali metal ion SCs and alkaline SCs. The as-assembled flexible device has an extended working voltage of 1.7 V and delivers a capacity of 5.37 mAh cm-2, a maximum energy density and power density of 0.52 mWh cm-3 and 170 mW cm-3 , respectively. The device maintains around 60% capacity retention after long cycling up to 1000 cycles. Moreover, our device can light up a LED light efficiently upon fast charging. The proposed quasi-solid-state dual-ion ASC has potential applications in future portable electronics and flexible energy storage devices.

关键词： Nickel hydroxide Niobium pentoxide Nanoarrays Flexible supercapacitor Dual ion capacitor

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Hydrogen/Electron Amphiphilic Bi-Functional Water Molecular Inactivator-Assisted Interface Stabilization in Highly Reversible Zn Metal Batteries

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Angewandte Chemie 2024年第7期137卷

作者： Wenwei Zhang Dr. Shaohua Zhu Tong Yang Lu Wu Jinghao Li Jiang Liang Dr. Yu Liu Lianmeng Cui Chen Tang Xinran Chen Huiqing Zhou Fan Qiao Min Zhou Prof. Ping Luo Fengtong Chi Dr. Xiaobin Liao Prof. Lei Zhang Prof. Qinyou An State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China The State Key Laboratory of Refractories and Metallurgy and Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Wuhan 430081 China School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China Hubei Longzhong Laboratory Wuhan University of Technology (Xiangyang Demonstration Zone) Xiangyang Hubei 441000 China Zhongyu Feima New Material Technology Innovation Center (Zhengzhou) Co. Ltd. High Technology Industrial Development Zone Zhengzhou 450001 China

Continuous hydrogen-bond-network in aqueous electrolytes can lead to uncontrollable hydrogen transfer, and combining the interfacial parasitic electron consumption cause the side reaction in aqueous zinc metal batteries (AZMBs). Herein, hydrogen/electron amphiphilic bi-functional 1,5-Pentanediol (PD) molecule was introduced to stabilize the electrode/electrolyte interface. Stronger proton affinity of -OH in PD can break bulk-H 2 O hydrogen-bond-network to inhibit the activity of water, and electron affinity can enhance electron acceptation capability, which ensures that PD is preferentially bound to electrode material over H 2 O. Besides, the participation of PD in the Zn 2+ solvation structure reduces water content at the solid–liquid interface and promotes uniform deposition process by optimizing Zn 2+ de-solvation energy. Accordingly, dense and vertical zinc texture based on intrinsic steric hindrance effect of PD and formed SEI protective layer to induce stable Zinc anode-electrolyte interface. Moreover, an organic–inorganic shielding water layer was formed at the cathode side to suppress vanadium dissolution in vanadium Oxide. Consequently, Zn//Zn symmetric cell could cycle for more than 5600 hours at 1 mAh cm −2 @1 mA cm −2 (more than 250 hours at 50 °C). Besides, the VO 2 and I 2 cathode all achieved stable cycling performance and former pouch cell could reach average capacity of 0.13 Ah.

关键词： Electrode/electrolyte interface Active-water SEI Electron and proton affinity Cathode dissolution

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Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO_3@(0.6BaTiO_3-0.4BiAlO_3) Core-Shell Material

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Journal of Wuhan University of technology(materials Science) 2018年第3期33卷 589-597页

作者： APPIAH Millicent 郝华 CHEN Wenjin CHEN Cheng YAO Zhonghua CAO Minghe LIU Hanxing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and EngineeringWuhan University of Technology International School of Materials Science and Engineering Wuhan University of Technology

The fundamental characteristics of varied initial core-sizes of Ba Ti O3（BT） and its influential role on the morphology and dielectric properties of Ba Ti O3@0.6 Ba Ti O3-0.4 Bi Al O3（BT@0.6 BT-0.4 BA） ceramic samples were studied. Alkoxide sol-precipitation method was adopted as revised chemical route to synthesize the constituent ＂core＂ BT powders in a dispersed phase, whereas the distinctive initial nano-sized particles were affected by the pre-calcination temperatures（600-900 ℃）.The microstructure of the uncoated BT ceramics revealed an exaggerated grain growth with an optimized dielectric constant（ε（max）〉9 000） whilst the coated ceramics behaved otherwise（grain growth inhibited） when sintered at an elevated temperature. Regardless of the previously studied solubility limit（about 0.1%） of BT-BA samples, BT@0.6 BT-0.4 BA maintained a maximum dielectric constant（ε（max）） ranging from 1 592 to 1 708 and tan δ less than 2% under a unit mole ratio at room temperature. In view of all these analyses, the initial nanometer sizes of the as-prepared BT-core powders combined with the increase effect of cation substitutions of Bi^（3＋） and Al^（3＋） in the shell content, induced the diffuse transition phase of BT@0.6 BT-0.4 BA composition.

关键词： MLCCs core-shell Alkoxide sol-precipitation relaxor grain boundary segregation

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Controlled preparation of ordered dendritic nanoclusters at Au fractal biointerfaces

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Chemical Physics Letters 2023年 829卷

作者： Tong-Kai Zhang Zi-Qian Yi Kai-Qi Ye Wei Geng Yao-Qi Huang Ge Tian Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-Sen University 2 Daxue Road Zhuhai 519082 China School of Engineering and Applied Sciences Harvard University MA 02138 USA

Owing to their ubiquitous use by natural systems, Au fractal structures by electrodeposition have been included in the design of new functional materials , yet a need exists for studying probe factors that influence the nature of materials produced in this process. In this investigation, we observe the presence of HCl results in a uniform structure of individual Au clusters. Also, the increase of deposition potential causes a decreasing size of Au cluster by accelerating the deposition process . Finally, as the deposition time becomes longer, significant increases occur in areas, densities, and fractal dimensions of individual Au clusters on the biointerface.

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1T-MoS2 Enriched Hierarchical MoS2/MoO3 Produced by Phase Transformation for the Efficient Hydrogen Evolution Reaction

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Chemistry, an Asian journal 2023年第5期18卷 2023 Jan 25页

作者： Xiao Zhang Yi-Xuan Liu Yi Lu Ge Tian Xiao-Yu Yang Wuhan University of Technology International School of Materials Science and Engineering CHINA. Wuhan University of Technology School of Materials Science and Engineering CHINA. Heinrich-Heine-Universitat Dusseldorf Institut für Anorganische Chemie und Strukturchemie CHINA. Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing CHINA. Wuhan University of Technology 122 Luoshi Road 430070 Wuhan CHINA.

In recent years, transition metal sulfides have been widely studied in the context of their use as electrocatalysts. The electrocatalytic propensity of the classical semiconductor MoS2, which exists in the 1T and 2H phase structures, has attracted extensive attention. Therefore, the synthesis of highly active and stable MoS2-based catalysts has become the goal of many research efforts. We recently developed a method that can be utilized to prepare the MoS2/MoO3 heterojunction in a phase-controlled manner. 1T-MoS2 phase enriched MoS2/MoO3 heterojunction can be generated using a simple hydrothermal and acid treatment sequence and that the heterojunction has a unique three-dimensional structure, large active surface area, and therefore achieve a low overpotential and high catalytic current density, as well as the long-term stability for the hydrogen evolution reaction.

关键词： 1T-MoS2 MoS2/MoO3 hierarchical heterojunction phase transformation hydrogen evolution reaction

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Facile synthesis of hierarchically structured manganese oxides as anode for lithium-ion batteries

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Journal of Central South University 2019年第6期26卷 1481-1492页

作者： DENG Zhao HUANG Xing ZHAO Xu CHENG Hua WANG Hong-en State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900China Department of Materials Science and Technology Southern University of Science and TechnologyShenzhen 518055China

Developing high-performance lithium ion batteries(LIBs)using manganese oxides as anodes is attractive due to their high theoretical capacity and abundant ***,we report a facile synthesis of hierarchical spherical MnO2 containing coherent amorphous/crystalline domained by a simple yet effective redox precipitation reaction at room ***,flower-like CoMn2O4 constructed by single-crystalline spinel nanosheets has been fabricated using MnO2 as *** mild methodology avoids undesired particle aggregation and loss of active surface area in conventional hydrothermal or solid-state ***,both MnO2 and CoMn2O4 nanosheets manifest superior lithium-ion storage properties,rendering them promising applications in LIBs and other energy-related fields.

关键词： manganese oxides nanostructures anode materials lithium ion batteries electrochemistry

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Hydrophobic interface layer improves the moisture tolerance and efficiency of ambient air-processed perovskite solar cells

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Fundamental Research 2024年

作者： Wanjie Yin Huiming Luo Ligang Yuan Yuxuan Sun Xiao Yang Longyan Zhang Yong Peng Qing-Song Jiang Faculty of Electronic Information Engineering Huaiyin Institute of Technology Huai'an 223003 China Institute for Materials Discovery University College London Malet Place London WC1E 7JE UK Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province Key Laboratory of Nondestructive Testing Ministry of Education School of the Testing and Photoelectric Engineering Nanchang Hangkong University Nanchang 330063 China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Because perovskite films degrade quickly in humidity conditions, perovskite solar cells (PSCs) prepared in ambient air still show lower photovoltaic performance than those prepared in an inert atmosphere. Here, we offer an effective interfacial passivation method via a poly(N-vinylcarbazole) (PVK) layer to protect perovskite films and prevent their moisture degradation under ambient air conditions. The power conversion efficiency of the PVK-based champion PSC is 23.27% and is higher than that of the control PSC (20.94%). Meanwhile, the PVK-based perovskite films exhibit a large water contact angle, which is attributed to the hydrophobic nature of the uniformly deposited PVK layer. This leads to no significant effect for the PVK-based perovskite film with moisture degradation for 6 days under an RH of 50%, and the corresponding PVK-based PSC exhibits a higher efficiency of 21.64% PCE and a smaller hysteresis index (HI). Moreover, even after 3550 hours of storage in an argon glovebox, the PVK-based PSC retains 98% of its initial efficiency.

关键词： perovskite solar cells ambient air fabrication poly(N-vinylcarbazole) surface passivation hydrophobic property

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Fabrication of BaTiO 3@FeO Core-Shell Nanoceramics for Dielectric Capacitor Applications

SSRN

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SSRN 2020年

作者： Wang, Hongye Cao, Minghe Mao, Tenglong Fu, Jiqing Pan, Wengao Hao, Hua Yao, Zhonghua Liu, Hanxing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Center for Smart Materials and Device Integration

Nanoceramics have a wide application in dielectric field due to their excellent dielectric properties. However, it is extremely difficult to fabricate densified BaTiO3 with nanometer scale crystalline. In this study, nanoscale BaTiO3 ceramics are successfully fabricated by deposition of a FeO layer onto BaTiO3 nanoparticle, and the structure and dielectric behavior of the BaTiO3@FeO nanoceramics are systematically investigated. The multilayer structure including 1) an inner tetragonal core, 2) a gradient lattice strain layer and 3) a surface insulating layer makes the dielectric constant peak tend to be rounded and broadened. Consequently, an excellent temperature/frequency stability met the X7R requirements and accompanied by the low dielectric loss are achieved in the BaTiO3@FeO nanoceramics. © 2020, The Authors. All rights reserved.

关键词： Iron oxides

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