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ZnO-based micromotors fueled by CO2: the first example of self-reorientation-induced biomimetic chemotaxis

National Science Review 2021年第11期8卷 102-109页

作者： Fangzhi Mou Qi Xie Jianfeng Liu Shengping Che Lamya Bahmane Ming You Jianguo Guan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of Technology

Synthetic chemotactic micro/nanomotors are envisioned to actively 'seek out' targets by following specific chemicals,but they are mainly powered by bioincompatible fuels and only show pseudochemotaxis（or advanced chemokinesis） due to their weak self-reorientation *** we demonstrate that synthetic ZnO-based Janus micromotors can be powered by the alternative biocompatible fuel of CO;2;,and further provide the first example of self-reorientation-induced biomimetic chemotaxis using *** ZnO-based micromotors are highly sensitive to dissolved CO;2;in water,which enables the corrosion of ZnO to continuously occur by providing H;+;through ***,they can autonomously move even in water exposed to air based on ***,they can sense the local CO;2;gradient and perform positive chemotaxis by self-reorientations under the phoretic *** discovery opens a gate to developing intelligent micro/nanomotors powered by,and sensitive to,biocompatible atmospheric or endogenous gaseous chemicals for biomedical and environmental applications.

关键词： micro/nanomotors zinc oxide carbon dioxide self-propulsion chemotaxis

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High-Entropy Prussian Blue Analogs via a Solid-Solution Storage Mechanism for Long Cycle Sodium-Ion Batteries Cathodes

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Chemistry - A European Journal 2025年 e202500880页

作者： He, Binshuo Huang, Meng Yu, Yueyue Meng, Jiashen Zhang, Hao Li, Jianwei Wang, Xuanpeng Sanya Science and Education Innovation Park Wuhan University of Technology Hainan Sanya572000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Hubei Wuhan430070 China Hubei Xiangyang441000 China Co. Ltd High Technology Industrial Development Zone No. 60 Xuelan Road Henan Zhengzhou450001 China Department of Physical Science & Technology School of Physics and Mechanics Wuhan University of Technology Hubei Wuhan430070 China

The open-framework characteristics of Prussian blue analogs (PBAs) have been recognized as advantages for cathode application in Sodium-ion batteries (SIBs). Nevertheless, lattice distortions during charge-discharge cycles critically compromise their cyclability. Recent advancements in high-entropy design strategies have significantly improved structural stability and energy storage efficiency within functional materials. In this study, we developed the high-entropy PBAs, K1.68 Mn0.21 Cu0.20 Ni0.20 Co0.19 Fe0.20[Fe(CN)6]0.870.13·0.66H2O, via a cost-effective aqueous co-precipitation method. Notably, this approach facilitates the concurrent incorporation of five transition metals (Mn, Cu, Ni, Co, and Fe), thereby establishing a stable crystalline framework. Electrochemical characterization demonstrates that the cathode achieves a specific capacity of 124.9 mAh g−1 at 0.025 A g−1. At various current densities (0.025–1 A g−1), the cathode maintains a particular capacity retention of 62.1% during rate testing. Furthermore, the cathode exhibits exceptional cyclability preserving 78.7% capacity at 1 A g−1 after 3000 cycles. Operando X-ray diffraction (XRD) analysis confirms the formation of a reversible solid-solution intercalation/extraction mechanism process, which prevents phase transitions and enhances cyclability. This high-entropy material holds significant potential as a cathode for SIBs, offering high specific capacity and outstanding long-term cycling stability. These superior properties position it as a competitive candidate for advanced energy storage systems. © 2025 Wiley-VCH GmbH.

关键词： Sodium-ion batteries

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Iron Fibers Arrays Prepared by Electrodepositing in Reverse Liquid Crystalline

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Journal of Wuhan University of technology(materials Science) 2006年第2期21卷 66-68页

作者：赵素玲官建国 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 ChinaCenter for Material Research and Testing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Ordered iron fiber arrays were electrodeposited on the surface of zinc foils using ＂FeSO4 solution-sodium caprylate-Decanol＂ 3-component reverse hexagonal liquid crystal as soft templates. The structure of the soft templates and the synthesized iron ,fibers were characterized by polarizing microscopy, X-ray diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive X-ray microanalysis etc. The experimental results shou that the synthesized iron fibers with a crystal phase grew up in the form of fiber clusters of about 200 nm along the direction perpendicular to the cathode surface. Each cluster was composed of several tens of fibers. The fibers had almost the same length of more than 10μm with a diameter of about 50 nm.

关键词： iron fibers arrays reverse hexagonal liquid crystal soft template electrodepositing

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Vacancy-Based Defect Regulation for High Thermoelectric Performance in Ge9Sb2Te12-x Compounds

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ACS APPLIED materialS & INTERFACES 2020年第17期12卷 19664-19673页

作者： Chen, Shuo Bai, Hui Li, Junjie Pan, Wenfeng Jiang, Xianyan Li, Zhi Chen, Zhiquan Yan, Yonggao Su, Xianli Wu, Jinsong Uher, Ctirad Tang, Xinfeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Hubei Nuclear Solid Physics Key Laboratory Department of Physics Wuhan University Wuhan 430072 China Hubei Nuclear Solid Physics Key Laboratory Department of Physics Wuhan University Wuhan 430072 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Hubei Nuclear Solid Physics Key Laboratory Department of Physics Wuhan University Wuhan 430072 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Physics University of Michigan Ann Arbor Michigan 48109 United States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Defect engineering is the core strategy for improving thermoelectric properties. Herein, cation doping along with modulation of cation vacancy has been developed in GeTe-based materials as an effective method to induce vacancy-based defects to boost their thermoelectric performance. A series of ternary compounds of Ge9Sb2Te12-x (x = 0, 0.03, 0.06, 0.09, 0.12, 0.15) was prepared by vacuum-melting and annealing combined with the spark plasma sintering (SPS) process. The role of Sb doping and cation vacancy on thermoelectric properties was systematically investigated. It is found that alloying Sb2Te3 into GeTe increases the concentration of cation vacancies, which is corroborated by both positron annihilation measurements and theoretical calculations. The vacancies, stacking faults, and planar defect interactions determine the thermoelectric transport properties. Adjusting the deficiency of Te effectively tunes the concentration of cation vacancies and dopant defects in the structure. In turn, this tunes the carrier concentration close to its optimum. A high power factor of 32.6 mu W cm(-1) K-2 is realized for Ge9Sb2Te11.91 at 725 K. Moreover, large strains induced by the defect structures, including Sb dopant, vacancy, staking faults, as well as planar defects intensify phonon scattering, leading to a significant decrease in the thermal conductivity from 7.6 W m(-1) K-1 for pristine GeTe to Ge9Sb2Te11.85 at room temperature. All of the above contribute to a high ZT value of 2.1 achieved for the Ge9Sb2Te11.91 sample at 775 K.

关键词： GeTe-based compounds alloying with Sb2Te3 deficiency of Te stacking fault vacancy plane thermoelectric

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synthesis and high temperature thermoelectric transport properties of Si-based type-Ⅰ clathrates

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Chinese Physics B 2009年第7期18卷 3084-3089页

作者：邓书康唐新峰唐润生 Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology Yunnan Normal University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

N-type Si-based type-Ⅰ clathrates with different Ga content were synthesized by combining the solid-state reaction method,melting method and spark plasma sintering （SPS） *** effects of Ga composition on high temperature thermoelectric transport properties were *** results show that at room temperature,the carrier concentration decreases, while the carrier mobility increases slightly with increasing Ga *** Seebeck coefficient increases with increasing Ga content. Among all the samples,Ba7.93Ga17.13Si28.72exhibits higher Seebeck coefficient than the others and reaches -135μV·K^-1 at 1000 *** sample prepared by this method exhibits very high electrical conductivity,and reaches 1.95x 10^5 S·m^-1 for Ba8.01Ga16.61Si28.93 at room *** thermal conductivity of all samples is almost temperature independent in the temperature range of 300-1000 K,indicating the behaviour of a typical *** maximum ZT value of 0.75 is obtained at 1000 K for the compound Ba7.93Ga17.13Si28.72.

关键词： type-Ⅰ clathrate thermoelectric materials synthesis

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Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

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Frontiers in Energy 2017年第3期11卷 326-333页

作者： Tian TIAN Jianjun TANG Wei GUO Mu PAN State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Hubei Provincical Key Laboratory of Fuel Cell Wuhan University of Technology Wuhan 430070 China

In this paper, a novel accelerated test method was proposed to analyze the durability of MEA, considering the actual operation of the fuel cell vehicle. The proposed method includes 7 working conditions： open circuit voltage （OCV）, idling, rated output, overload, idling-rated cycle, idling-overload cycle, and OCV-idling cycle. The experimental results indicate that the proposed method can effectively destroy the MEA in a short time （165 h）. Moreover, the degradation mechanism of MEA was analyzed by measuring the polarization curve, CV, SEM and TEM. This paper may provide a new research direction for improving the durability of fuel cell.

关键词： polymer electrolyte membrane fuel cell accelerated life-time test load cycling test durability

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synthesis of Ti_2AlC by hot pressing and its mechanical and electrical properties

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中国有色金属学会会刊：英文版 2007年第5期17卷 1001-1004页

作者：王苹梅炳初洪小林周卫兵 School of Science Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Ti2AlC bulk material was synthesized by hot pressing of mixture powders of TiC, Ti, Al and active carbon. The phase compositions of resultant product at different temperature were detected by X-ray diffractometer. The microstructures of the samples were observed by SEM. Finally, the mechanical properties and thermal properties of the sample at 1400 ℃ were measured. The results show that high purity Ti2AlC material with little Ti3AlC2 can be synthesized by hot pressing 0.5TiC/1.5Ti/1.0Al/0.5C at 1 400 ℃. Ti2AlC exhibits high mechanical properties and metallic electrical properties. Its fracture toughness is 7.0 MPa·m1/2, its flexural strength is 384 MPa at room temperature, and its electrical conductivity is 2.56×106 Ω1·m-1 at room temperature.

关键词：热压制 Ti2AlC 机械力学电工材料

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Fabrication of W@Cu Composite Powders by Direct Electroless Plating Using a Dripping Method

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Journal of Wuhan University of technology(materials Science) 2013年第4期28卷 829-833页

作者：刘树龙 YU Kan 沈强 LI Meijuan CHEN Wenshu LUO Guoqiang ZHANG Lianmeng Sate Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Department of Physics Huaibei Normal University

A direct electroless copper （Cu） coating on tungsten powders method requiring no surface treatment or stabilizing agent and using glyoxylic acid （C2H203） as a reducing agent was reported. The effects of copper sulfate concentration and the pH of the plating solution on the properties of the prepared W@Cu composite powders were assessed. The content of Cu in the composite powders was controlled by adjusting the concentration of copper sulfate in the electroless plating solution. A uniform, dense, and consistent Cu coating was obtained under the established optimum conditions （flow rate of C2H203 = 5.01 mL/min, solution pH = 12.25 and reaction temperature 45.35℃） by using central composite design method. In addition, the crystalline Cu coating was evenly dispersed within the W@Cu composite powders and Cu element in the coating existed as Cu~. The formation mechanism for the W@Cu composite powders by electroless plating in the absence of surface treatment and stabilizing agent was also proposed.

关键词： dripping method electroless plating W@Cu composite powders characterization

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Fabrication and Property of SiC Ceramic with Large Thickness/Diameter Ratios

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Journal of Wuhan University of technology(materials Science) 2020年第3期35卷 506-513页

作者： TAN Lin HE Qianglong HU Lanxin TIAN Tian WANG Weimin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Silicon carbide ceramics with different thicknesses/diameter ratios were prepared by using ultra-fine silicon carbide powder with the sintering additives of 1.0 wt% boron and 1.5 wt% carbon. The influence of thickness/diameter ratio on the microstructure and density of SiC ceramics was investigated in detail. The experimental results show that the addition of boron and carbon sintering aids can promote the densification process of SiC ceramic, leading to the low sintering temperature and improve mechanical properties. At 1950 ℃, SiC ceramic with a density of 99% exhibits Young's modulus, hardness, and flexural strength of 476 MPa, 28.3 GPa, and 334 MPa, respectively. It is found that long holding time has a positive effect on the uniformity of the microstructure and density distribution of SiC ceramics with large thickness/diameter ratios. Additionally, the sintering additive of boron can solid-solve into SiC, and then facilitate the phase transformation of SiC to form 6H-SiC and 4H-SiC composite ceramics.

关键词： SiC large thickness/diameter ratios mechanical properties uniformity

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Molecular Engineering of g-C_(3)N_(4)with Dibenzothiophene Groups as Electron Donor for Enhanced Photocatalytic H_(2)-Production

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Chinese Journal of Structural Chemistry 2022年第6期41卷 48-54页

作者： Shanren Tao Sijie Wan Qinyang Huang Chengming Li Jiaguo Yu Shaowen Cao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The construction of donor-acceptor(D-A)molecular structure is an attractive strategy to enhance the photocatalytic performance of polymeric ***,dibenzothiophene(DBT)-4-carbaldehyde as the precursor is introduced into g-C_(3)N_(4)(TCN)prepared by two-step thermal polymerization to construct an intramolecular D-A type copolymer(TCN-DBT_(x)).DFT calculation and experimental results reveal that DBT plays the role of electron donor unit to modify g-C_(3)N_(4).The incorporation of DBT not only adjusts the band gap to improve reduction ability,but also induces an internal electric field with extendingπ-conjugated system for effective charge *** a result,TCN-DBT_(x)exhibits much better photocatalytic performance with an optimal hydrogen production rate of 3334μmol h^(-1)g^(-1),which is 2.5 times that of *** work provides a protocol for preparing high-performance g-C_(3)N_(4)-based photocatalysts toward various applications.

关键词： carbon nitride donor-acceptor photocatalysis charge transfer

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