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All-Climate Stretchable Dendrite-Free Zn-Ion Hybrid Supercapacitors Enabled by Hydrogel Electrolyte Engineering

Energy & Environmental materials 2023年第2期6卷 381-388页

作者： Yuqi Jiang Kun Ma Meiling Sun Yuanyuan Li Jinping Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China The Institute of Technological Sciences Wuhan UniversityWuhan 430072China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China

Hybrid supercapacitors have shown great potentials to fulfill the demand of future diverse applications such as electric vehicles and portable/wearable *** particular,aqueous zinc-ion hybrid supercapacitors(ZHSCs)have gained much attention due to their low-cost,high energy density,and environmental ***,typical ZHSCs use Zn metal anode and normal liquid electrolyte,causing the dendrite issue,restricted working temperature,and inferior device ***,a novel flexible Zn-ion hybrid supercapacitor(FZHSC)is developed by using activated carbon(AC)anode,δ-MnO_(2) cathode,and innovative PVA-based gel *** this design,heavy Zn anode and its dendrite issue are avoided and layered cathode with large interlayer spacing is *** addition,flexible electrodes are prepared and integrated with an anti-freezing,stretchable,and compressible hydrogel electrolyte,which is attained by simultaneously using glycerol additive and freezing/thawing technique to regulate the hydrogen bond and *** resulting FZHSC exhibits good rate capability,high energy density(47.86 Wh kg^(−1);3.94 mWh cm^(−3)),high power density(5.81 kW kg^(−1);480 mW cm^(−3)),and excellent cycling stability(~91%capacity retention after 30000 cycles).Furthermore,our FZHSC demonstrates outstanding flexibility with capacitance almost unchanged even after various continuous shape *** hydrogel electrolyte still maintains high ionic conductivity at ultralow temperatures(≤−30℃),enabling the FZHSC cycled well,and powering electronic timer robustly within an all-climate temperature range of−30~80℃.This work highlights that the promising Zn metal-free aqueous ZHSCs can be designed with great multifunctionality for more practical application scenarios.

关键词： all-climate operation dendrite-free anode high flexibility multifunctional gel electrolyte Zn-ion hybrid supercapacitor

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Advances in the study of HOR reaction mechanisms under alkaline conditions

Advanced Sensor and Energy Materials

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advanced Sensor and Energy materials 2024年第1期3卷 23-38页

作者： Yuru Liao Shengchen Wang Yifan Zhang Yue Zhang Yun Gao Xueqin Mu Suli Liu Dingsheng Wang Zhihui Dai School of Chemistry and Molecular Engineering Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology InstitutionWuhan 430070China Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing100084China

Hydrogen energy is an important energy carrier,which is an ideal choice to meet energy demand and reduce harmful gas *** green recycling of hydrogen energy depends on water electrolysis and hydrogen fuel cells,which involves hydrogen oxidation reaction(HOR)and hydrogen evolution reaction(HER).The activity of HER/HOR in alkaline electrolyte,however,exhibits a significantly lower magnitude(2–3 orders)compared to that observed in an acidic medium,which hinders the development of alkaline water electrolysis and alkaline membrane fuel ***,comprehending the characteristics of HOR/HER activity in alkaline electrolytes and elucidating its underlyingmechanismis a prerequisite for the designof advanced *** on this background,this reviewwill briefly summarize the explanations and controversies about the basic HOR mechanism,including bifunctional mechanismand hydrogen binding energy ***,the crucial affecting factors of theHOR kinetics,such as dband center theory,interfacial water recombination,alkali metal cations and electronic effects,are ***,based on the above theories,the design principle,catalytic performance,and latest progress ofHOR electrocatalysts are *** outlook and future research perspectives of advanced catalysts for hydrogen energy recycling are *** reviewis helpful to understand the latest development ofHORmechanismand design cost-effective and high-performance HOR electrocatalysts towards the production of clean renewable energies.

关键词： Hydrogen oxidation reaction(HOR) Electrocatalytic mechanism Hydrogen binding energy theory(HBE) Bifunctional theory

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异价离子取代构建高离子电导率的插层结构

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Science Bulletin 2023年第11期68卷 1134-1142,M0004页

作者：孙宗栋梁嘉宁刘开朗冯昕吴宇赵英鹤梁麒吴劲松李会巧翟天佑 State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research CenterWuhan University of TechnologyWuhan 430070China

在纳米尺度通道内的离子传输是纳米流体学领域研究的重点.二维(2D)材料的本征层状结构为流体离子提供了稳健的纳米传输通道.为实现流体离子在2D材料薄膜内的高效传输,本文开发了一种新颖的异价离子取代插层策略,通过化学气相输运法直接... 详细信息

在纳米尺度通道内的离子传输是纳米流体学领域研究的重点.二维(2D)材料的本征层状结构为流体离子提供了稳健的纳米传输通道.为实现流体离子在2D材料薄膜内的高效传输,本文开发了一种新颖的异价离子取代插层策略,通过化学气相输运法直接合成多种具有高离子电导结构的单晶.将块体单晶置入水中通过手动摇晃即可获得二维纳米片分散液,组装后的薄膜展现出高的锂离子电导率,优于目前多数关于2D材料薄膜水相锂离子电导率的报道.这种在合成过程中直接构筑离子传输结构的策略与目前已有的先剥离2D材料后对纳米片修饰改性的方法完全不同.因此,这种普适性的异价离子取代插层策略将会为更多高离子电导率的2D材料薄膜的开发提供借鉴与参考.

关键词：离子电导率离子取代纳米片离子传输纳米流体材料薄膜传输通道插层结构

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Well-structured 3D channels within GO-based membranes enable ultrafast wastewater treatment

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Nano Research 2023年第2期16卷 1826-1834页

作者： Huaqiang Fu Zhe Wang Peng Li Wei Qian Zixin Zhang Xin Zhao Hao Feng Zhugen Yang Zongkui Kou Daping He School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center of RF-Microwave Technology and Application School of ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Water Energy and EnvironmentCranfield UniversityCranfield MK430ALUK

Graphene oxide(GO)-based membranes have been widely studied for realizing efficient wastewater treatment,due to their easily functionalizeable surfaces and tunable interlayer ***,the irregular structure of water channels within GO-based membrane has largely confined water permeance and prevented the simultaneously improvement of purification ***,we purposely construct the well-structured three-dimensional(3D)water channels featuring regular and negatively-charged properties in the GO/SiO_(2)composite membrane via in situ close-packing assembly of SiO_(2)nanoparticles onto GO *** regular 3D channels can improve the water permeance to a record-high value of 33,431.5±559.9 L·m^(−2)·h−1(LMH)bar−1,which is several-fold higher than those of current state-of-the-art GO-based *** further demonstrate that benefiting from negative charges on both GO and SiO2,these negatively-charged 3D channels enable the charge selectivity well toward dye in wastewater where the rejection for positive-charged and negative-charged dye molecules is 99.6%vs.7.2%,*** 3D channels can also accelerate oil/water(O/W)separation process,in which the O/W permeance and oil rejection can reach 19,589.2±1,189.7 LMH bar−1 and 98.2%,*** present work unveils the positive role of well-structured 3D channels on synchronizing the remarkable improvement of both water permeance and purification performance for highly efficient wastewater treatment.

关键词： graphene oxide membranes wastewater treatment water channels charge-selectivity

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Electron-injection-engineering induced dual-phase MoO2.8F0.2/MoO2.4F0.6 heterostructure for magnesium storage

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National Science Review 2024年第8期11卷 240-252页

作者： Weixiao Wang Fangyu Xiong Shaohua Zhu Mengyu Yan Xiaobin Liao Kesong Yu Lianmeng Cui Jinghui Chen Junjun Wang Ruoqi Lan Jun Xie Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Hubei Longzhong Laboratory Wuhan University of Technology(Xiangyang Demonstration Zone) Hainan Institute Wuhan University of Technology

Rechargeable magnesium batteries（RMBs） have received increased attention due to their high volumetric capacity and ***,the sluggish diffusion kinetics of highly polarized Mg2+in host lattices severely hinders the development of ***,we report an electron injection strategy for modulating the Mo 4d-orbital splitting manner and first fabricate a dual-phase M0O2.8F0.2/MoO2.4F0.6heterostructure to accelerate Mg2+*** electron inje ction strategy triggers weak Jahn-Teller distortion in MoO6octahedra and reorganization of the Mo 4d-orbital,leading to a partial phase transition from orthorhombic phase MiO2.8F0.2to cubic phase *** a result,the designed heterostructure generates a built-in electric field,simultaneously improving its ele ctronic conductivity and ionic diffusivity by at least one order of magnitude compared to MoO2.8F0.2and ***,the assembled MoO2.8F0.2/MoO2.4F0.6//Mg full cell exhibits a remarkable reversible capacity of 172.5 mAh g-1at0.1 A g-1,pushing forward the orbital-scale manipulation for high-performance RMBs.

关键词： rechargeable magnesium batteries electron injection strategy dual-phase heterostructure electronic conductivity ionic diffusivity

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金属纳米伴侣界面金属原子对淀粉样蛋白纤维化的调控作用

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Science China materials 2024年第7期67卷 2345-2354页

作者：李虎高冠斌余良翀张子俊张斌邓昱周慕庆雪沈雷孙涛垒 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

合成具有生物分子伴侣功能的金属纳米伴侣作为调节蛋白质构象的候选物具有良好的应用前景.尽管对金属纳米伴侣已有广泛研究,但其分子中界面金属原子对蛋白质构象的调控作用及其机制尚不清楚,这严重阻碍了对高性能金属纳米伴侣的开发.本... 详细信息

合成具有生物分子伴侣功能的金属纳米伴侣作为调节蛋白质构象的候选物具有良好的应用前景.尽管对金属纳米伴侣已有广泛研究,但其分子中界面金属原子对蛋白质构象的调控作用及其机制尚不清楚,这严重阻碍了对高性能金属纳米伴侣的开发.本研究以相同配体巯基丙酸(MPA)修饰的金纳米团簇Au_(25)为模型,通过界面掺杂金属原子(Cu、Cd、Ag)精准制备出了三种单原子掺杂的纳米伴侣,分别是Au_(24)Cu_(1)、Au_(24)Cd_(1)和Au_(24)Ag_(1),系统地研究了Au_(25)、Au_(24)Cu_(1)、Au_(24)Cd_(1)和Au_(24)Ag_(1)四种纳米伴侣对Aβ40折叠与纤维化的调控作用.全原子分子动力学模拟结果表明,界面掺杂金属原子(Cu、Cd、Ag)可通过范德华力和静电相互作用等弱相互作用影响与之接触的Aβ40单体的折叠.等温滴定量热分析结果进一步表明,Au_(24)Cu_(1)与Aβ40的相互作用分别是Au_(24)Cd_(1)、Au_(24)Ag_(1)和Au_(25)的1.76、2.09、16.67倍.这些不同的相互作用会导致金属纳米伴侣对Aβ折叠与纤维化的不同调节作用,四种金属纳米伴侣抑制Aβ折叠与纤维化效率依次为Au_(24)Cu1>Au_(24)Cd_(1)>Au_(24)Ag_(1)>Au_(25).本文提供了对金属纳米团簇界面金属原子如何发挥作用的微观分子见解,并为通过操纵界面金属原子来定制金属纳米伴侣提供了基础研究数据.

关键词： customizing nano-chaperone nano-interface gold-nanoclusters peptide amyloidosis

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S-scheme ZnO/WO3 heterojunction photocatalyst for efficient H2O2 production

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Journal of materials Science & technology 2022年第29期124卷 193-201页

作者： Zicong Jiang Bei Cheng Yong Zhang S.Wageh Ahmed A.Al-Ghamdi Jiaguo Yu Linxi Wang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Designing highly efficient photocatalyst for hydrogen peroxide(HO)production is an ideal strategy to avoid the shortcomings of traditional HOproduction and to realize the conversion of solar energy to chemical *** this work,a step-scheme(S-scheme)heterojunction photocatalyst composed of Zn O and WOis carefully prepared by hydrothermal and calcination method for efficient photocatalytic *** ZW30 composite photocatalysts exhibit enhanced activity with the highest HO-production rate of 6788μmol *** results show that the photocatalytic HOproduction process is dominated by a direct two-electron Oreduction *** enhanced photocatalytic HO-production activity is attributed to the formation of interfacial internal electric field(IEF)in the S-scheme heterojunction,which boosts the spatial separation of charge carriers and enables electrons with the strongest reduction power to participate in *** work provides an in-depth insight of the great advantages of S-scheme heterojunction in photocatalytic HOproduction.

关键词： Photocatalysis Hydrogen peroxide Step-scheme heterojunction O2 reduction Zinc oxide

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In Situ Tin Doping to Enhance the Cycling Performance of 4.9 V LNMO Cathode materials 7

In Situ Tin Doping to Enhance the Cycling Performance of 4.9...

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7th International Conference on Power and Energy Applications, ICPEA 2024

作者： Li, Yan Du, Jinqiao Liang, Zhaojie Tian, Jie Wang, Pei Luo, Wen Electric Power Scientific Research Institute Shenzhen Power Supply Bureau Co. Ltd Shenzhen China Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan China

ISBN: (纸本)9798350356113

LiNi0.5Mn1.5O4 (LNMO) cathode material has the advantages of high energy density (650 Wh/kg), high discharge voltage (4.7 V vs Li+/Li), low raw material cost, low pollution, and high lithium ion transmission efficiency. It is a potential high power, low cost cobalt-free lithium-ion battery cathode material. However, the capacity decline of LNMO during high voltage charge and discharge processes leads to short cycle life, which limits its wide application and commercialization. To address this issue, this article uses in-situ Sn doping to enhance the cycle stability of LNMO. By uniformly mixing acetate salts in stoichiometric ratio and using one-step spray drying method to prepare undoped and Sn-doped LNMO cathode materials, this study systematically investigates the structural changes, morphological characteristics, and electrochemical performance before and after doping. The capacity retention rates of Sn-doped LNMO materials after 350 cycles at 0.7C are 93.5% and 94.5%, respectively, significantly higher than the undoped 80.8%, indicating that in-situ Sn doping can significantly enhance cycle performance. This study demonstrates that the LiNi0.5Mn1.46O0.04 electrode prepared by spray drying method, with its simple and straightforward synthesis process and excellent electrochemical performance, has the potential to become a high-performance lithium-ion batteries cathode material. © 2024 IEEE.

关键词： Lithium-ion batteries

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Ultra-Thin Carbon-Doped Bi_(2)WO_(6) Nanosheets for Enhanced Photocatalytic CO_(2) Reduction

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Transactions of Tianjin University 2021年第4期27卷 338-347页

作者： Han Li Junchao Zhang Jiaguo Yu Shaowen Cao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The photocatalytic reduction of CO_(2) is a promising strategy to generate chemical ***,this reaction usually suf-fers from low photoactivity because of insuffi cient light absorption and rapid charge *** engineering has become an eff ective approach to improve the photocatalytic ***,ultra-thin(~4.1 nm)carbon-doped Bi_(2)WO_(6) nanosheets were prepared via hydrothermal treatment followed by *** ultra-thin nanosheet structure of the cata-lyst not only provides more active sites but also shortens the diff usion distance of charge carriers,thereby suppressing charge ***,carbon doping could successfully extend the light absorption range of the catalyst and remarkably promote charge separation,thus inhibiting *** a result,the as-prepared Bi_(2)WO_(6) photocatalyst with ultra-thin nanosheet structure and carbon doping exhibits enhanced photocatalytic CO_(2) reduction performance,which is twice that of pristine ultra-thin Bi_(2)WO_(6) *** study highlights the importance of defect engineering in photocatalytic energy conversion and provides new insights for fabricating effi cient photocatalysts.

关键词： Defect engineering Bi_(2)WO_(6)nanosheet Charge separation Light absorption

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Iron oxide nanoparticles with photothermal performance and enhanced nanozyme activity for bacteria-infected wound therapy

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Regenerative Biomaterials 2022年第1期9卷 548-559页

作者： Jiaxin Guo Wenying Wei Yanan Zhao Honglian Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China Shenzhen Research Institute of Wuhan University of Technology Shenzhen 518000China

Metal-based nanomaterials usually have broad-spectrum antibacterial properties,low biological toxicity and no drug resistance due to their intrinsic enzyme-like catalytic properties and external field(magnetic,thermal,acoustic,optical and electrical)***,iron oxide(Fe_(3)O_(4))nanoparticles(IONPs)synthesized by us have good biosafety,excellent photothermal conversion ability and peroxidase-like catalytic activity,which can be used to construct a photothermal-enzymes combined antibacterial treatment *** with peroxide-like catalytic activity can induce H_(2)O_(2)to catalyze the production of·OH in a slightly acidic environment,thus achieving certain bactericidal effects and increasing the sensitivity of bacteria to *** stimulated by near-infrared light,the photothermal effect could destroy bacterial cell membranes,resulting in cleavage and inactivation of bacterial protein,DNA or ***,it can also improve the catalytic activity of peroxidase-like and promote IONPs to catalyze the production of more·OH for killing *** IONPs synergistic treatment,the antibacterial rate of Escherichia coli and Staphylococcus aureus reached nearly 100%.It also has an obvious killing effect on bacteria in infected wounds of mice and can effectively promote the healing of *** wounds,which has great application potential in clinical anti-infection treatment.

关键词： antibacterial photothermal therapy peroxidase-like catalytic therapy

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