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Rational design of hierarchically porous Fe-N-doped carbon as efficient electrocatalyst for oxygen reduction reaction and Zn-air batteries

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Nano Research 2021年第12期14卷 4768-4775页

作者： Zihan Meng Neng Chen Shichang Cai Jiawei Wu Rui Wang Tian Tian Haolin Tang Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan528200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Material Science and Engineering Henan University of TechnologyZhengzhou450001China

The rational design and construction of hierarchically porous nanostructure for oxygen reduction reaction (ORR) electrocatalysts is crucial to facilitate the exposure of accessible active sites and promote the mass/electron transfer under the gas-solid-liquid triple-phase condition. Herein, an ingenious method through the pyrolysis of creative polyvinylimidazole coordination with Zn/Fe salt precursors is developed to fabricate hierarchically porous Fe-N-doped carbon framework as efficient ORR electrocatalyst. The volatilization of Zn species combined with the nanoscale Kirkendall effect of Fe dopants during the pyrolysis build the hierarchical micro-, meso-, and macroporous nanostructure with a high specific surface area (1,586 m^(2)·g^(−1)), which provide sufficient exposed active sites and multiscale mass/charge transport channels. The optimized electrocatalyst exhibits superior ORR activity and robust stability in both alkaline and acidic electrolytes. The Zn-air battery fabricated by such attractive electrocatalyst as air cathode displays a higher peak power density than that of Pt/C-based Zn-air battery, suggesting the great potential of this electrocatalyst for Zn-air batteries.

关键词： hierarchically porous structure Fe-N-doped carbon electrocatalysts oxygen reduction reaction Zn-air batteries

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Fabrication and physicochemical and medicinal characterization of nano traditional Chinese medicine

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Recent Patents on Engineering 2008年第2期2卷 104-113页

作者： Peiyan, Ma Zhengyi, Fu Weimin, Wang Hao, Wang Jinyong, Zhang Yucheng, Wang Qingjie, Zhang State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Science Wuhan University of Technology Wuhan 430070 China

This paper discusses the present status of, and future perspectives on nano Traditional Chinese medicine (TCM) by describing the concept, its methodologies, preservation, drug effect and pharmacological study. The explanation and discussion are made from the recent study of nano TCM. Several types of nano Traditional Chinese medicine are prepared by High speed centrifugal sheering pulverizer (HSCS pulverizer) and the physicochemical characterization of nano particles is discussed. The typical serumal experiments are completed to prove the remarkable medicinal effect of nano TCM particles. When the medicine is pulverized to nano particles, the natural barrier of cell membrane and cell wall are broken into pieces. The medicine can be extracted faster and more adequately. Conclusions are drawn that the medicinal effects of nano particles can be improved. So the Nano TCM will have a profound effect on the Chinese drugs pharmaceutics. More experimental data should be studied in order to evaluate the medicinal effects of nano TCM further. © 2008 Bentham Science Publishers Ltd.

关键词： Fabrication

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Preface to Special Issue on Photocatalysis for celebrating the 20^(th) anniversary of Professor Jimmy C. Yu's return to Hong Kong and leading photocatalytic research there

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Chinese Journal of Catalysis 2015年第12期36卷 2047-2048页

作者：余家国林隽 State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Department of Chemistry Renmin University of China

It is a pleasure to dedicate this special issue of Chinese Journal of Catalysis（CJC）to *** ***,Choh-Ming Li Professor of Chemistry at The Chinese University of Hong *** is to celebrate the 20th anniversary of his re... 详细信息

关键词： pleasure Jimmy return photocatalytic celebrate distinguished helping anniversary strive

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Formation of Fe-6.5wt%Si sheets by powder rolling and sintering

Formation of Fe-6.5wt%Si sheets by powder rolling and sinter...

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作者： Zhang, L.M. Yuan, W.J. Shen, Q. Zhang, D.M. State Key Lab. of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

In the present study, Fe-Si sheets were formed by powder rolling of Fe-6.5wt%Si mixture powders, then were sintered in flowing Ar+5vol%H2 atmosphere. The changes in microstructure and density during the formation process were mainly discussed. The results show that Fe-Si mixture powders can be rolled into comparatively compact sheets. During subsequent sintering and re-rolling, the density of the sheet gradually increased and Si diffused into Fe lattice step by step with the increasing of temperature.

关键词： Sheet metal

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Constructing Matching Interfaces by Amorphous Engineering for Enhanced Lithium Ion Transport in Quasi-Solid-state Lithium–Iodine Batteries

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Angewandte Chemie - International Edition 2025年 e202507184页

作者： Gu, Jiapei Dong, Chenxu Zhu, Yuxin Liu, Haoyun Ji, Juan Yu, Yongkun Ma, Changning Zhou, Cheng Mai, Liqiang Xu, Xu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Zhongyu Feima New Material Technology Innovation Center (Zhengzhou) Co. Ltd. High Technology Industrial Development Zone Zhengzhou 450001 China

Quasi-solid-state lithium–iodine (Li–I2) batteries have shown prospects as their high theoretical capacity, high safety, and abundant iodine resources. However, the interface between the crystalline filler and the f... 详细信息

Quasi-solid-state lithium–iodine (Li–I₂) batteries have shown prospects as their high theoretical capacity, high safety, and abundant iodine resources. However, the interface between the crystalline filler and the flexible polymer skeleton of composite solid electrolytes exhibits inadequate bonding, leading to higher interface energy and sluggish migration dynamics of Li⁺. In this work, a continuous interface solid electrolyte is designed by combining the atomic structure rearrangement of metal-organic framework (MOF) to achieve interface coupling between MOF and aramid fiber. Based on the experimental results and theoretical calculations, the amorphous engineering promotes Li⁺ migration and polyiodide confinement effects for Li–I₂ batteries. The batteries show a high capacity of 170.7 mAh g⁻¹ at 5 C and achieve a capacity retention rate of 97.8% after 450 cycles. More impressively, the batteries achieve a long life of 3000 cycles at the high current density of 20 C with a good capacity retention of 94.1%. This work reveals the mechanism of coupled interface with structure matching in Li⁺ migration and polyiodide integration process, providing guidance for the design of novel composite solid electrolytes to achieve high-performance Li–I₂ batteries. © 2025 Wiley-VCH GmbH.

关键词： Amorphous–amorphous interface Continuous interface quasi-solid-state electrolyte Lithium–iodine batteries Metal-organic frameworks

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Joining TiB2-Ni cermets with Ti6A14V by pulse current heating

Joining TiB2-Ni cermets with Ti6A14V by pulse current heatin...

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作者： Peng, Y. Fu, Z.Y. Wang, W.M. Wang, H. Wang, Y.C. Zhang, J.Y. Zhang, Q.J. State Key Lab. of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan City Hubei Province 430070 China

Pulse current heating technology is used to join TiB2-Ni cermets with Ti6A14V at different temperatures (1023K, 1073K and 1123K) with 7MPa pressure and Cu foil and Ni foil are used as joining interlayer. Joint points increase with welding temperature. The microstructure of joints is observed through SEM images and micrographs. The diffusion coefficient (D0) of Cu at the Cu/TiB2 interface is calculated by the EPMA patterns. The diffusion principle of pulse current heating and influences of electric field and current on atom diffusion are studied.

关键词： Cermets

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Epitaxial growth of copper film by MOCVD 6th

Epitaxial growth of copper film by MOCVD

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6th Annual Meeting on Testing and Evaluation of advanced materials, TEIM 2015

作者： Tu, Rong Huang, Jin Zhang, Song Zhang, Lianmeng State Key Lab. of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan430070 China

ISBN: (纸本)9783038357278

Copper thin films were deposited on single crystal sapphire substrate via metal-organic MOCVD using Cu(acac)2 as precursor. X-ray diffraction (XRD) and Scanning Electronic Microscope (SEM) were employed for studying preferred orientation and microstructure. Atomic Force Microscope was utilized in order to characterize roughness of copper thin layer. By calculation of the Gibbs free energy, the reactions have been deeply understood. Depositions were carried out at various substrate temperatures in the rage 473K to 673K. It has been revealed that temperature determined the orientation and microstructure of copper films. At 673K, copper films have exhibited preferred orientation, smooth surface and connected grains, which proved that this copper thin film can act as precursor. Based on the study of epitaxial growth of copper films, a schematic diagram of epitaxial growth relationship is suggested for the step by step depositions processes. © 2016 Trans Tech Publications, Switzerland.

关键词： Atomic force microscopy

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Preparation of titanium diboride reticulated porous ceramics

Preparation of titanium diboride reticulated porous ceramics

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作者： Shaowei, Han Weiming, Wang Zhengyi, Fu Hao, Wang State Key Lab. of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Using a reticulated polyurethane sponge with interconnected pores as primal framework and immersing into TiB2 slurry consisting of Ni and Mo as sintering additives, a porous TiB2 ceramics with high porosity and interconnected pores was prepared by immersing and high temperature sintering process. The rheology of TiB2slurry which used silica sol as a binder was studied. The optimum condition of the slurry suitable for impregnating the polyurethane sponge was obtained. The flexural strength of the porous reticulated TiB2 ceramics can reach 1 MPa.

关键词： Ceramic materials

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PTCDA/CuS cathode enabling stable sulfide-based all-solid-state batteries

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Journal of Materiomics 2025年

作者： Zhixing Wan Shuo Wang Yahao Mu Ruihua Zhou Hang Liu Tingwu Jin Di Wu Jianlong Xia Ce-Wen Nan Center of Smart Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Organic cathode materials have garnered significant attention for their potential application in lithium-ion batteries due to their lightweight nature, tunable structures, high energy density, and environmental friendliness. However, the dissolution of organic cathodes in liquid electrolytes often leads to poor cycling stability, which limits their practical application. In this study, a composite cathode was prepared by ball milling the PTCDA/CuS (perylene-3,4,9,10-tetracarboxylic dianhydride, PTCDA) with a sulfide-based electrolyte and carbon nanotubes. By optimizing the component ratios, the assembled all-solid-state batteries (ASSBs) show a high discharge capacity of 210 mA⸱h/g after 200 cycles without any capacity degradation at a current density of 33.0 mA/g. Through comprehensive characterization techniques including X-ray diffraction (XRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS), the coordination of Cu 2+ and the formation of sulfur-linked polymers during the charge-discharge processes are elucidated, and the reversibility of the electrochemical reactions has been confirmed. This work highlights the excellent compatibility between organic cathodes and sulfide-based electrolytes, providing a new way for the development of high-performance ASSBs with high energy density and extended lifespan.

关键词： PTCDA/CuS lithium argyrodite organic cathode all-solid-state battery

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Exploring the Core-shell Structure of BaTiO3-based Dielectric Ceramics Using Machine Learning Models and Interpretability Analysis

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Journal of Wuhan University of technology(materials Science) 2024年第3期39卷 561-569页

作者：孙家乐 XIONG Peifeng 郝华 LIU Hanxing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and EngineeringInternational School of Material Science and EngineeringWuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park Wuhan University of TechnologySanya 572000China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China

A machine learning(ML)-based random forest(RF)classification model algorithm was employed to investigate the main factors affecting the formation of the core-shell structure of BaTiO_(3)-based ceramics and their interpretability was analyzed by using Shapley additive explanations(SHAP).An F1-score changed from 0.8795 to 0.9310,accuracy from 0.8450 to 0.9070,precision from 0.8714 to 0.9000,recall from 0.8929 to 0.9643,and ROC/AUC value of 0.97±0.03 was achieved by the RF classification with the optimal set of features containing only 5 features,demonstrating the high accuracy of our model and its high *** the interpretability analysis of the model,it was found that the electronegativity,melting point,and sintering temperature of the dopant contribute highly to the formation of the core-shell structure,and based on these characteristics,specific ranges were delineated and twelve elements were finally obtained that met all the requirements,namely Si,Sc,Mn,Fe,Co,Ni,Pd,Er,Tm,Lu,Pa,and *** the process of exploring the structure of the core-shell,the doping elements can be effectively localized to be selected by choosing the range of features.

关键词： machine learning BaTiO_(3) core-shell structure random forest classifier

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