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Manipulating hot carrier cooling in silicon phononic crystals opens new application opportunities

Chinese Chemical Letters 2023年第9期34卷 1-2页

作者： Peng Zhou Shaojuan Lu Wangnan Li Shulai Lei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China Hubei Institute of Aerospace Chemotechnology Xiangyang 441003China Hubei Longzhong Laboratory Xiangyang 441000China

Phononic crystals(PnCs)have had a multiple of important and promising applications such as sonic diodes,acoustic cloaking,optomechanic,and thermoelectrics[1–5].Undoubtably,it is of significance to explore new finding... 详细信息

关键词： diodes application finding

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Edge preparation methods for cutting tools:a review

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Frontiers of Mechanical Engineering 2023年第4期18卷 49-77页

作者： Yu ZHOU Wei FANG Lanying SHAO Yanfei DAI Jiahuan WANG Xu WANG Julong YUAN Weigang GUO Binghai LYU College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology(Ministry of Education and Zhejiang Province) Zhejiang University of TechnologyHangzhou 310023China Special Equipment Institute Hangzhou Vocational&Technical CollegeHangzhou 310018China

Edge preparation can remove cutting edge defects,such as burrs,chippings,and grinding marks,generated in the grinding process and improve the cutting performance and service life of *** edge preparation methods have been proposed for different tool matrix materials,geometries,and application *** study presents a scientific and systematic review of the development of tool edge preparation technology and provides ideas for its future ***,typical edge characterization methods,which associate the microgeometric characteristics of the cutting edge with cutting performance,are briefly ***,edge preparation methods for cutting tools,in which materials at the cutting edge area are removed to decrease defects and obtain a suitable microgeometry of the cutting edge for machining,are *** edge preparation methods are explored on the basis of existing processing technologies,and the principles,advantages,and limitations of these methods are systematically summarized and *** preparation methods are classified into two categories:mechanical processing methods and nontraditional processing *** methods are compared from the aspects of edge consistency,surface quality,efficiency,processing difficulty,machining cost,and general *** this manner,a more intuitive understanding of the characteristics can be ***,the future development direction of tool edge preparation technology is prospected.

关键词： edge preparation method preparation principle cutting edge geometry edge characterization tool performance

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In-situ physical/chemical cross-linked hydrogel electrolyte achieving ultra-stable zinc anode-electrolyte interface towards dendrite-free zinc ion battery

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Journal of Energy Chemistry 2024年第10期97卷 342-351,I0007页

作者： Chen-Yang Li Jiang-Lin Wang Dong-Ting Zhang Min-Peng Li Hao Chen Wei-Hai Yi Xin-Ying Ren Bao Liu Xue-Feng Lu Mao-Cheng Liu State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050GansuChina School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050GansuChina Chaowei Power Group Co. LTDChangxing 313100ZhejiangChina School of Vehicle Engineering Jiangsu UniversityNanjing 210031jiangsuChina

Hydrogen evolution reaction(HER),zinc corrosion,and dendrites growth on zinc metal anode are the major issues limiting the practical applications of zinc-ion ***,an in-situ physical/chemical cross-linked hydrogel electrolyte(carrageenan/polyacrylamide/ZnSO_(4),denoted as CPZ)has been developed to stabilize the zinc anode-electrolyte interface,which can eliminate side reactions and prevent dendrites *** in-situ CPZ hydrogel electrolyte improves the reversibility of zinc anode due to eliminating side reactions caused by active water ***,the electrostatic interaction between the SO_(4)^(-)groups in CPZ and Zn^(2+)can encourage the preferential deposition of zinc atoms on(002)crystal plane,which achieve dendrite-free and homogeneous zinc *** in-situ hydrogel electrolyte offers a streamlined approach to battery manufacturing by allowing for direct integration into the ***,the Zn//Zn half battery with CPZ hydrogel electrolyte can enable an ultra-long cycle over 5500 h at a current density of 0.5 mA cm^(-2),and the Zn//Cu half battery reach an average coulombic efficiency of 99.37%.The Zn//V_(2)O_5-GO full battery with CPZ hydrogel electrolyte demonstrates94.5%of capacity retention after 2100 *** study is expected to open new thought for the development of commercial hydrogel electrolytes for low-cost and long-life zinc-ion batteries.

关键词： In-suit CPZ hydrogel electrolyte Hydrogen evolution reaction and zinc corrosion Dendrites growth Zinc anode-electrolyte interface Zn ion batteries

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Polyzwitterionic cross-linked double network hydrogel electrolyte enabling high-stable Zn anode

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Nano Research 2024年第6期17卷 5278-5287页

作者： Mengyu Shi Junlong Zhang Guochuan Tang Ben Wang Sen Wang Xiaoxian Ren Guojie Li Weihua Chen Chuntai Liu Changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China

Zn metal anode suffers from dendrite issues and passive byproducts,which severely plagues the practical application of aqueous Zn metal ***,a polyzwitterionic cross-linked double network hydrogel electrolyte composed of physical crosslinking(hyaluronic acid)and chemical crosslinking(synthetic zwitterionic monomer copolymerized with acrylamide)is introduced to overcome these *** the one hand,highly hydrophilic physical network provides an energy dissipation channel to buffer stress and builds a H_(2)O-poor interface to avoid side *** the other hand,the charged groups(sulfonic and imidazolyl)in chemical crosslinking structure build anion/cation transport channels to boost ions’kinetics migration and regulate the typical solvent structure[Zn(H_(2)O)_(6)]^(2+)to R-SO_(3)^(−)[Zn(H_(2)O)_(4)]^(2+),with uniform electric field distribution and significant resistance to dendrites and parasitic *** on the above functions,the symmetric zinc cell exhibits superior cycle stability for more than 420 h at a high current density of 5 mA·cm^(−2),and Zn||MnO_(2)full cell has a reversible specific capacity of 150 mAh·g^(−1)after 1000 cycles at 2 C with this hydrogel ***,the pouch cell delivers impressive flexibility and cyclability for energy-storage applications.

关键词： Zn anode dendrites parasitic reactions polyzwitterion double network hydrogel electrolyte

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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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Carrier recombination suppression and transport enhancement enable high-performance self-powered broadband Sb_(2)Se_(3) photodetectors

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InfoMat 2023年第4期5卷 60-76页

作者： Shuo Chen Yi Fu Muhammad Ishaq Chuanhao Li Donglou Ren Zhenghua Su Xvsheng Qiao Ping Fan Guangxing Liang Jiang Tang Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenGuangdongthe People's Republic of China 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 UniversityNanningGuangxithe People's Republic of China State Key Laboratory of Silicon Materials&School of Materials Science and Engineering Zhejiang UniversityHangzhouZhejiangthe People's Republic of China Wuhan National Laboratory for Optoelectronics(WNLO) School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhanHubeithe People's Republic of China

Antimony selenide(Sb_(2)Se_(3))is a promising candidate for photodetector applications boasting unique material benefits and remarkable optoelectronic *** high-performance self-powered Sb_(2)Se_(3)photodetector through a synergistic regulation of absorber layer and heterojunction interface demonstrates great potential and needs essential *** this study,an effective two-step thermodynamic/kinetic deposition technique containing sputtered and selenized Sb precursor is implemented to induce self-assembled growth of Sb_(2)Se_(3)light absorbing thin film with large crystal grains and desirable[hk1]orientation,presenting considerable thin-film photodetector ***,aluminum(Al^(3+))cation dopant is introduced to modify the optoelectronic properties of CdS buffer layer,and further optimize the Sb_(2)Se_(3)/CdS(Al)heterojunction interface *** to the suppressed carrier recombination and enhanced carrier transport kinetics,the champion Mo/Sb_(2)Se_(3)/CdS(Al)/ITO/Ag photodetector exhibits self-powered and broadband characteristics,accompanied by simultaneously high responsivity of 0.9 A W^(-1)(at 11 nW cm^(-2)),linear dynamic range of 120 dB,impressive ON/OFF switching ratio over 10^(6)and signal-to-noise ratio of 10^(9),record total noise determined realistic detectivity of 4.78×10^(12)Jones,and ultra-fast response speed with rise/decay time of 24/75 ns,representing the top level for Sb_(2)Se_(3)-based *** intriguing work opens up an avenue for its selfpowered broadband photodetector applications.

关键词： photoresponse recombination suppression Sb_(2)Se_(3) self-powered photodetector transport enhancement

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Generation mechanism and motion behavior of sliver defect in single crystal Ni-based superalloy

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Journal of materials Science & technology 2023年第6期137卷 232-246页

作者： Huxiang Xia Yanhong Yang Qiushui Feng Qingyan Xu Hongbiao Dong Baicheng Liu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Engineering University of LeicesterLeicesterLE17RHUnited Kingdom

Sliver is a common but easily neglected defect in single crystal Ni-based superalloy *** date,there is still no unified viewpoint on its formation mechanism and generation *** this work,the orientation discontinuity and motion behavior of sliver defects were studied through experiments and numerical *** ultrathin wedge-shaped specimen containing the grain boundary of the sliver and the matrix was prepared at the initial position of the sliver defect for the observation of equal thick-ness *** discontinuity of equal thickness fringes on both sides of the grain boundary was ob-served through a transmission electron microscope,which directly confirms the abrupt change in the orientation between the sliver and matrix from the *** crystal lattices at the smooth area and the bulging area of the grain boundary were found to have unusually different *** irregular lattice arrangement at the bulging area shows that the grain boundary has experienced high-stress *** results of sliver orientation deviation with a further composition analysis show the micro protuberance of the mold shell has a noticeable inductive effect on the sliver ***,a self-developed three-dimensional phase-field simulation model coupled with the spatial topology algorithm is established to simulate the orientation deflection behavior and orientation devia-tion threshold of fractured *** simulation results indicated that there is an upper limit of the cross-section solid fraction at the fracture position for the motion of the fractured *** the cross-section solid fraction at the fracture position is higher than this upper limit,it will be difficult to produce large deviation slivers due to the structural limitation of surrounding *** upper limit does not change with the solidification temperature gradient.

关键词： Single crystal Ni-based superalloys Directional solidification Sliver defect Phase-field simulation

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Highly efficient solution-processed organic photovoltaics enabled by improving packing behavior of organic semiconductors

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Science China Chemistry 2024年第3期67卷 890-897页

作者： Xinyue Cui Hongxiang Li Hao Lu Yuqiang Liu Guangliu Ran Rui Liu Huarui Zhang Xueqing Ma Dawei Li Yi Lin Jifa Yu Wenkai Zhang Lei Cai Yahui Liu Pei Cheng Andong Zhang Zaifei Ma Guanghao Lu Zhishan Bo College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao 266071China State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu 610065China Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum StudiesBeijing Normal UniversityBeijing 100875China Shandong Province Key Laboratory of Medical Physics and Image Processing Technology School of Physics and ElectronicsShandong Normal UniversityJinan 250014China Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing 100875China Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Frontier Institute of Science and Technology Xi'an Jiaotong UniversityXi'an 710054China

Solution processability is a unique property of organic semiconductors. The compact and regular π-π stacking between molecules is paramount in the performance of organic optoelectronic devices. However, it is still a challenge to improve their stacking quality without sacrificing the solution-processability from the aspect of materials design. Here, delicately engineered additives are presented to promote the formation of ordered aggregation of conjugated molecules by regulating their nucleation and growth dynamics. Intriguingly, the long-chain BTP-eC9-4F molecules can realize ordered aggregation comparable to short-chain ones without sacrificing processability. The domain size of BTP-eC9-4F aggregation is enlarged from 24.2 to 32.2 nm in blend *** exciton diffusion and charge transport become faster, contributing to the suppression of recombination losses. As a result, a power conversion efficiency of 19.2% is achieved in D18:BTP-eC9-4F based organic photovoltaics. Our findings demonstrate a facile strategy to improve the packing quality of solution-processed organic semiconductors for high-efficiency photovoltaics and beyond photovoltaics.

关键词： organic semiconductor organic photovoltaic charge transport solution processability

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Multi-scale regulation in S,N co-incorporated carbon encapsulated Fe-doped CO_(9)S_(8) achieving efficient water oxidation with low overpotential

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Nano Research 2022年第2期15卷 872-880页

作者： Wenbin Wang Yang Yang Yang Zhao Shuzhe Wang Xiaomeng Ai Jiakun Fang Youwen Liu 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 Lab of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Sulfide compounds provide a type of promising alternative for oxygen evolution reaction(OER)electrocatalysts due to their diversity,intrinsic activities,low-price and ***,the unsmooth mass transport channel,the collapse of the structure and insufficient intrinsic activities limit their potential for OER *** respond,the dense Fe-doped Co_(9)S_(8) nanoparticles encapsulated by S,N co-incorporated carbon nanosheets(Fe-Co_(9)S_(8)@SNC)were proposed and synthesized via fast thermal treatment from ultrathin metal-organic frameworks(MOFs)*** designed catalysts,the nanosheet configuration connected by nanoparticles retained rich access for permeation of electrolyte and precipitation of O_(2) bubbles during OER ***,the outer carbon layer of Co9S8 provided additional catalytic activity while acting as armor to keep the structure *** the atomic scale,the doped Fe regulated the local charge density and the d-band center for facilitating desorption of oxygen *** from this multi-scale regulation strategy,the Fe-Co_(9)S_(8)@SNC displays an ultralow overpotential of 273 mV at 10 mA·cm^(-2) and small Tafel slope of 55.8 mV·dec^(-1),which is even close to the benchmark RuO_(2) *** concept could provide valuable insights into the design of other catalysts for OER and beyond.

关键词： Co9S8 water oxidation electronic structure multi-scale regulation d-band center

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Valorization of spent lithium-ion battery cathode materials for energy conversion reactions

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Green Energy and Environment 2025年

作者： Zhang, Jin Chen, Ding Jiao, Jixiang Zeng, Weihao Mu, Shichun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

With large-scale commercial applications of lithium-ion batteries (LIBs), lots of spent LIBs will be produced and cause huge waste of resources and greatly increased environmental problems. Thus, recycling spent LIB materials is inevitable. Due to high added-value features, converting spent LIB cathode materials into catalysts exhibits broad application prospects. Inspired by this, we review the high-added-value reutilization of spent LIB materials toward catalysts of energy conversion. First, the failure mechanism of spent LIB cathode materials are discussed, and then the transformation and modification strategies are summarized and analyzed to improve the transformation efficiency of failed cathode materials and the catalytic performance of catalysts, respectively. Moreover, the electrochemical applications of failed cathode material derived catalysts are introduced, and the key problems and countermeasures are analyzed and proposed. Finally, the future development trend and prospect of high-added-value reutilization for spent LIB cathode materials toward catalysts are also given. This review will predictably advance the awareness of valorizing spent lithium-ion battery cathode materials for catalysis. © 2024 Institute of Process Engineering, Chinese Academy of Sciences

关键词： Lithium-ion batteries

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