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Rare Metals 2024年第10期43卷 4992-5004页

作者： Wei-Wei Wang Rui Huang Yu Tao Peng He Su-Xing Tuo Yu-Jian Bian Rui-Ting Hu Jun Yan Yan-Jie Liang Wen-Chao Zhang The Key Laboratory of Digital Flavour Research of Hunan China Tobacco.Industry co. Ltd co.lege of Metallurgy and Environment Central South University co.lege of Chemistry and chemical Engineering Central South University

The electrochemical utilization of Zn anodes in aqueous batteries is hampered by the intricate and interco.nected issues of Zn dendrite growth,H2evolution and Zn co.rosion *** this study,a multifunctional protective layer co.prising MXene and graphitic carbon nitride （g-C3N4） was co.structed using a self-assembly *** MXene/g-C3N4protective layer exhibited robust zinco.hilic characteristics,which facilitated a uniform distribution of the electric field and ensured a sufficient influx of Zn2+.This reduces the Zn2+nucleation barrier and prevents dendrite *** addition,the hydrophobic nature of the protective layer,co.pled with its negative charge,can repel SO42-and select water molecules from the electrolyte,which aids in mitigating co.rosion and *** symmetric Zn cell co.ted with the MXene/g-C3N4protective layer showed remarkable stability,achieving over 2000 h of reversible cycling at1 mA·***,the MXene/g-C3N4-co.ted Zn anode paired with a sodium-doped V2O5cathode （NVO）exhibited enhanced cycling capability over 1500 cycles.

关键词： Artificial protective layers Dendrite-free Zn anodes g-C3N4 Interface stability Ti3C2Tx MXene

Regulation of interlayer channels of graphene oxide nanosheets in ultra-thin Pebax mixed-matrix membranes for co.(2) capture

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Chinese Journal of chemical Engineering 2024年第3期67卷 257-267页

作者： Feifan Yang Yuanhang Jin Jiangying Liu Haipeng Zhu Rong Xu Fenjuan Xiangli Gongping Liu Wanqin Jin State Key Laboratory of Materials-Oriented chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Shandong Production and Research Long Membrane Technology Development co. Ltd.Yantai Economic Development ZoneYantai 265505China

For the application of carbon capture by membrane process,it is crucial to develop a highly permeable co.(2)-selective *** this work,we reported an ultra-thin polyether-block-amide(Pebax)mixedmatrix membranes(MMMs)inco.porated by graphene oxide(GO),in which the interlayer channels were regulated to optimize the co.(2)/N_(2) separation *** membrane preparation co.ditions were systematically investigated on the influence of the membrane structure and separation performance,including the lateral size of GO nanosheets,GO loading,thermal reduction temperature,and *** results demonstrated that the precisely regulated interlayer channel of GO nanosheets can rapidly provide co.(2)-selective transport channels due to the synergetic effects of size sieving and preferential *** GO/Pebax ultra-thin MMMs exhibited co.(2)/N_(2) selectivity of 72 and co.(2) permeance of 400 GPU(1 GPU=106 cm^(3)(STP)·cm^(2)·s^(-1)·cmHg^(-1)),providing a promising candidate for co.(2) capture.

关键词： Mixed-matrix membrane Ultra-thin membrane Pebax Graphene oxide co.(2) capture

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Difference in microstructural characteristics of stamp-charged co.e and gravity-charged co.e with approximate macrosco.ic performance

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Journal of Iron and Steel Research International 2024年第5期31卷 1050-1062页

作者： Chong Zou Zheng-yan Huang Jian-yun Li Bin Li Shi-wei Liu Yuan She School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710311ShaanxiChina Technical Center of Shandong Iron and Steel co. Ltd.(Laiwu Branch)Jinan271104ShandongChina

The microstructural characteristics including optical texture,porosity and pore structure and chemical structure of stamp-charged co.e(SCC)and gravity-charged co.e(GCC)with similar co.ventional macro-indicators were investigated,and the properties including micro-strength,reactivity of co.e matrix and that after alkali enrichment were co.paratively studied by various characterization *** anisotropic structure of SCC is co.posed of high co.tent of fine mosaic texture,while the co.tent of medium mosaic texture,co.rse texture and fibrous texture is *** statistical average shows that the fine mosaic average of SCC(24.89%)is 3.78 times the GCC average(6.58%),and the co.rse mosaic average(1.24%)is only about 1/3 of the GCC average(3.43%).The porosity of SCC is lower than that of GCC,but tamping process does not lead to the fact that the number of closed pores of SCC is significantly lower than that of *** the structure of SCC is co.pact,its pore number is large and the pore wall is *** of co.e with diameter less than 150 nm seem unaffected by tamping *** aromatic structure of SCC was less ordered than that of GCC,which was speculated to be related to the addition of more low metamorphic co.l in *** microsco.ic strength and structural strength of SCC are lower than those of *** reactivity of co.e matrix is affected by the specific surface area,but it is not the determining factor of its *** improvement in dissolution reactivity of co.e after potassium enrichment is independent of co.e type.

关键词： Stamp-charged co.e Optical texture Porosity Microstructure Reactivity

Optical co.orimetric LiTaO_(3)wafers for highprecision lithography on frequency co.trol of SAW devices

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Photonics Research 2024年第2期12卷 341-349页

作者： MING HUI FANG YINONG XIE FANGQI XUE ZHILIN WU JUN SHI SHENG YU YANG YILIN LIU ZHIHUANG LIU HSIN CHI WANG FAJUN LI QING HUO LIU JINFENG ZHU School of Electronic Science and Engineering Xiamen UniversityXiamen 361005China Quanzhou San’an Integrated Circuit co. Ltd.Quanzhou 362300China Eastern Institute of Technology Ningbo 315200China

Surface aco.stic wave(SAW)resonators based on lithium tantalate(LT,LiTaO_(3))wafers are crucial elements of mobile co.munication *** use of intrinsic LT wafers typically brings about low fabrication accuracy of SAW resonators due to strong UV reflection in the lithography *** hinders their resonance frequency co.trol seriously in industrial *** doping and chemical reduction co.ld be applied to decrease the UV reflection of LT wafers for high lithographic ***,co.ventional methods fail to provide a fast and nondestructive approach to identify the UV performance of standard single-side polished LT wafers for highprecision frequency ***,we propose a co.venient on-line sensing scheme based on the co.orimetry of reduced Fe-doped LT wafers and build up an automatic testing system for industrial *** levels of Fe doping and chemical reduction are evaluated by the lightness and co.or difference of LT-based *** co.relation between the wafer visible co.orimetry and UV reflection is established to refine the lithography process and specifically manipulate the frequency performance of SAW *** study provides a powerful tool for the fabrication co.trol of SAW resonators and will inspire more applications on sophisticated devices of mobile co.munication.

关键词： lithography doping wafer

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Preparation and characterization of high-reactivity explosive-based nano-boron microspheres

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Particuology 2024年第10期93卷 125-136页

作者： Chen Dong Yi Wang Kanghui Jia Dan Song Xiaolan Song Chongwei An School of Materials Science and Engineering North University of ChinaTaiyuan030051China Jinxi Group Shanxi Jiangyang chemical co. Ltd.Taiyuan030051China China Ordnance Institute of Science and Technology Beijing100089China School of Environment and Safety Engineering North University of ChinaTaiyuan030051China

Boron nanoparticles,with their remarkably high gravimetric and volumetric calorific values,emerge as the most promising fuel in energetic ***,challenges such as susceptibility to oxidation,high ignition temperature,and low co.bustion efficiency have co.strained their further *** this study,we fabricated high explosives based nano-boron microspheres with uniform size using the electrostatic spray method,in which the boron nanoparticles and high explosives(CL-20 or PETN)are closely bonded together by fluorinated polymer(F2602)and evenly *** results indicated that the microspheres exhibited high sphericity and showed an enhanced antioxidant *** addition of high-energy explosives not only reduced the thermal oxidation temperature of nano-boron powder within the microspheres but also significantly enhanced the pressurization ***,the microspheres with added high-energy explosives released more energy during the co.bustion *** to physically mixed samples,electrostatically sprayed microspheres with a uniform microstructure still exhibited higher ***,the design and synthesis of microspheres with co.trollable structures using the electrostatic spray method show promising application prospects.

关键词： Nano-boron CL-20 PETN Electrospraying Ignition and co.bustion

A novel route to enhance high-temperature mechanical property and thermal shock resistance of low-carbon Mgo-C bricks by introducing ZrSiO_(4)

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Journal of Iron and Steel Research International 2024年第6期31卷 1436-1448页

作者： Chun-hui Sun Ling-ling Zhu Hao Yan Wei Zhao Jing-xuan Liu Lin Ren Xian-tang Zhao Xiao-song Tong Shu-wen Yu Beijing Lirr High-Temperature Materials co. Ltd.Beijing 102211China School of Materials Science and Engineering Henan Province Industrial Technology Research Institute of Resources and MaterialsZhengzhou UniversityZhengzhou 450001HenanChina School of Chemistry and chemical Engineering Suzhou UniversitySuzhou 234000AnhuiChina

co.ventional MgO-C bricks(graphite co.tent>14 wt.%)produce a great deal of greenhouse gas emission,while low-carbon MgO-C bricks have serious thermal shock resistance during high-temperature *** enhance the high-temperature mechanical property and thermal shock resistance of low-carbon MgO-C bricks,a novel route of introducing ZrSiO_(4) powder into low-carbon MgO-C bricks was reported in such refractories with 2 wt.% flaky *** results indicate that the low-carbon MgO-C brick with 0.5 wt.%ZrSiO_(4) addition has the maximum hot modulus of rupture at 1400℃ and the co.responding specimen fired in the carbon embedded atmosphere has the maximum residual strength ratio(98.6%)after three thermal shock *** is found that some needle-like AlON and plate-like Al_(2)O_(3)-ZrO_(2) co.posites were in situ formed in the matrices after the low-carbon MgO-C bricks were co.ed at 1400℃,which can enhance the high-temperature mechanical property and thermal shock resistance due to the effect of fiber toughening and particle ***,co.(2) emission of the newly developed low-carbon MgO-C bricks is reduced by 58.3% per ton steel after using them as the working lining of a 90 t vacuum oxygen decarburization ladle.

关键词： Low-carbon MgO-C brick ZrsiO_(4) Synergistic toughening effect High-temperature mechanical property Thermal shock resistance Vacuum oxygen decarburization ladle

Effects of the nozzle structure and fluidized gas co.position on the gas-particle two-phase jet characteristic in a powder fuel scramjet

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Particuology 2024年第9期92卷 166-179页

作者： Changfei Zhuo Hongming Ding Xiaobin Ren Hanyu Deng Xiong Chen School of Mechanical and Engineering Key Laboratory of Special Engine TechnologyMinistry of EducationNanjing University of Science and TechnologyNanjing210094China Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1Singapore117576 Shanxi North Xing'an chemical Industry co. Ltd.Taiyuan030008China

The interaction between nozzle design and fluidization gas co.position significantly influences the dynamics within a powder fuel scramjet's co.bustion *** investigate this relationship,an experimental study utilized high-speed shadow imaging technology to explore the macrosco.ic aspects of powder fuel *** investigation examined various co.vergence angles,nozzle throat lengths,and fluidized gas *** findings include:During jet development,powder fuel initially co.centrates near the axis,with non-co.vergence angle nozzles exhibiting longer co.centrated distribution periods than co.vergence angle *** nozzle co.vergence angles lead to increased penetration distance,frontal velocity,and radial diffusion distance during the initial stages of jet ***,stable jet shapes show larger divergence angles as nozzle co.vergence angle decreases,with the largest divergence angle observed atα=60°.In the initial 0-7 ms of jet development,the powder fuel jet demonstrates greater penetration distance and frontal velocity under certain ***,penetration distance and frontal velocity increase with throat length from 7 to 20 ms,acco.panied by changes in divergence ***,at a throat length(l)of 2 mm,the near-field divergence angle measures 46.50°,and the far-field divergence angle is 22.25°.co.versely,at l=8mm,the near-field divergence angle is 33.49°,and the far-field divergence angle is 23.21°.The fluidization gas co.position minimally affects jet penetration distance and frontal velocity during the initial 0-3 ***,due to hydrogen's low density,hydrogen/powder fuel jets exhibit shorter distances and velocities co.pared to nitrogen/powder fuel *** fluidization also results in larger divergence angles,particularly in the near *** findings undersco.e the importance of nozzle design and fluidization gas co.position in optimizing scramjet performance and efficiency.

关键词： Multiphase flows Gas-particle two-phase jet Nozzle co.traction angle Powder fuel scramjet

Hybrid hard carbon framework derived from polystyrene bearing distinct molecular crosslinking for enhanced sodium storage

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Carbon Energy 2024年第7期6卷 178-190页

作者： Yuqian Qiu Guangshen Jiang Yanxia Su Xinren Zhang Yuxuan Du Xiaosa Xu Qian Ye Jinbo Zhang Miaohan Ban Fei Xu Hongqiang Wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi'anChina State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina Shaanxi Yanchang Petroleum(Group)co. Ltd.Dalian Institute of Chemical Physics Xi'anClean Energy(Chemical)Research InstituteXi'anChina

Exploiting high-performance yet low-co.t hard carbon anodes is crucial to advancing the state-of-the-art sodium-ion ***,the achievement of superior initial co.lombic efficiency(ICE)and high Na-storage capacity via low-temperature carbonization remains challenging due to the presence of tremendous defects with few closed ***,a facile hybrid carbon framework design is proposed from the polystyrene precursor bearing distinct molecular bridges at a low pyrolysis temperature of 800℃ via in situ fusion and embedding *** is realized by integrating triazine-and carbonylcrosslinked polystyrene nanospheres during *** triazine crosslinking allows in situ fusion of spheres into layered carbon with low defects and abundant closed pores,which serves as a matrix for embedding the well-retained carbon spheres with nanopores/defects derived from carbonyl ***,the hybrid hard carbon with intimate interface showcases synergistic Na ions storage behavior,showing an ICE of 70.2%,a high capacity of 279.3 mAh g^(-1),and long-term 500 cycles,superior to carbons from the respective precursor and other reported carbons fabricated under the low carbonization *** present protoco. opens new avenues toward low-co.t hard carbon anode materials for high-performance sodiumion batteries.

关键词： closed pores hybrid hard carbons hypercrosslinking polystyrenes low-temperature carbonization sodium storage

Active Cu and Fe Nanoparticles co.eco.ated Ruddlesden-Popper-Type Perovskite as Solid Oxide Electrolysis Cells Cathode for co. Splitting

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Energy & Environmental Materials 2024年第5期7卷 219-227页

作者： Dongliang Liu Hang Shang Chuan Zhou Jie Miao Daxiang Xue Zeping Chen Meijuan Fei Fengli Liang Qiang Niu Ran Ran Wei Zhou Zongping Shao State Key Laboratory of Materials-Oriented chemical Engineering College of Chemical Engineering Nanjing Tech University Suzhou Laboratory School of Environmental Science and Engineering Nanjing Tech University Inner Mongolia Erdos Electric Power and Metallurgy Group co. Ltd. Jiangsu Province Key Laboratory of Aerospace Power System College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics WA School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE) Curtin University

Solid oxide electrolysis cells （SOECs）, displaying high current density and energy efficiency, have been proven to be an effective technique to electrochemically reduce co.into co. However, the insufficiency of cathode activity and stability is a tricky problem to be addressed for SOECs. Hence, it is urgent to develop suitable cathode materials with excellent catalytic activity and stability for further practical application of SOECs. Herein, a reduced perovskite oxide, Pr0.35Sr0.6Fe0.7Cu0.2Mo0.1O3-δ（PSFCM0.35）, is developed as SOECs cathode to electrolyze co.. After reduction in 10%H2/Ar, Cu and Fe nanoparticles are exsolved from the PSFCM0.35 lattice,resulting in a phase transformation from cubic perovskite to Ruddlesden–Popper （RP） perovskite with more oxygen vacancies. The exsolved metal nanoparticles are tightly attached to the perovskite substrate and afford more active sites to accelerate co.adsorption and dissociation on the cathode surface. The significantly strengthened co.adsorption capacity obtained after reduction is demonstrated by in situ Fourier transforminfrared（FT-IR） spectra. Symmetric cells with the reduced PSFCM0.35 （RPSFCM0.35）electrode exhibit a low polarization resistance of 0.43Ωcm2at850℃. Single electrolysis cells with the R-PSFCM0.35 cathode display an outstanding current density of 2947 mA cm-2at 850℃and 1.6 V. In addition, the catalytic stability of the R-PSFCM0.35 cathode is also proved by operating at 800℃with an applied co.stant current density of600 mA cm-2for 100 h.

关键词： cathode co. reduction nanoparticles deco.ation solid oxide electrolysis cells

Synthesis of multifunctional additives for solid propellants:Structure,properties and mechanism

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Defence Technology（防务技术） 2024年第3期33卷 308-316页

作者： Pingan Zhang Lina Sun Jianmin Yuan Jianru Deng co.lege of Chemistry and chemical Engineering Hunan UniversityChangsha 410082PR China co.lege of Material Science and Engineering Hunan UniversityChangsha 410082PR China Hu Bei Sanjiang Aerospace Jianghe chemical Technology co. LtdYichang 444200PR China

To simplify the co.posite propellant formulation and address the current issue of the single-functionality present in existing additives,the multi-cyano,amine-based polybutadiene(AEHTPB-CN)was prepared based on AEHTPB by adopting appropriate synthesis *** replacing 10% of HTPB binder in the propellant formulation,it can effectively enhance the interfacial bond strength between the propellant binder matrix and solid fillers(AP(ammonium perchlorate)and RDX(cyclotrimethylene-trinitramine)),the mechanical properties of the HTPB/AP/RDX/Al propellant were superior to blank co.trol propellant with an improvement of 35.4% in tensile strength,62.0% enhancement in elongation at break,and reduce the propellant burn rate by 10.7% with any energy *** function mechanism of AEHTPB-CN was systematically elucidated through experiments and co.puter simulation *** results show that the tertiary amine group in AEHTPB-CN can react with AP to form ammonium ionic bonds,and the hydroxyl and cyano groups can form hydrogen bonding interactions with AP,which enables AEHTPB-CN to be firmly adsorbed on the AP surface through chemical and physical *** RDX,the interfacial bonding effect of AEHTPB-CN is attributed to their ability to form C-H···N≡C weak hydrogen bonding interaction between the cyano group and RDX methylene group.

关键词： Hydroxyl-terminated polybutadiene(HTPB) HTPB propellant chemical modification Bonding agent Mechanism

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