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Energy & Environmental materials 2024年第1期7卷 72-80页

作者： Yusi Lei Liang Yue Yuruo Qi Yubin Niu Shujuan Bao Jie Song Maowen Xu Faculty of materials and Energy Institute for Clean Energy & Advanced Materials Southwest University shandong zero-one-four advanced materials co. Ltd.

Sodium dentrite formed by uneven plating/stripping can reduce the utilization of active sodium with poor cyclic stability and,more importantly,cause internal short circuit and lead to thermal runaway and ***,sodium de... 详细信息

关键词： dendrite-free gel polymer electrolyte metal organic framework sodium batteries

3D printed silico.-based micro-lattices with ultrahigh areal/gravimetric capacities and robust structural stability for lithium-ion batteries

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Nano Research 2024年第4期17卷 2693-2703页

作者： Jie Fu Dong Wang Yan Li Xianzheng Liu Rui Zhang Zhiyuan Liu Pengdong Liu Lijuan Zhang Xuefei Li Guangwu Wen School of materials Science and Engineering Shandong University of TechnologyZibo 255000China shandong Si-Nano materials Technology co. Ltd.Zibo 255000China

Nanostructured silico. anodes have shown extraordinary lithium storage properties for lithium-ion batteries(LIBs)but are usually achieved at low areal loadings(<1.5 mg·cm^(-2))with low areal *** sound electrochemical... 详细信息

Nanostructured silico. anodes have shown extraordinary lithium storage properties for lithium-ion batteries(LIBs)but are usually achieved at low areal loadings(co.-graphene-carbon nanotube(3D-Si/G/C)electrode for simultaneously achieving ultrahigh areal/gravimetric capacities at high mass *** periodically arranged vertical channels and hierarchically porous filaments facilitate sufficient electrolyte infiltration and rapid ion diffusion,and the carbonaceous network provides excellent electron transport properties and mechanical integrity,thus endowing the printed 3D-Si/G/C electrode with fast electrochemical reaction kinetics and reversibility at high mass ***,the 3D-Si/G/C with high areal mass loading of 12.9 mg·cm^(-2) exhibits excellent areal capacity of 12.8 mAh·cm^(-2) and specific capacity of 1007 mAh·g^(-1),***-situ optical microsco.e and ex-situ scanning electron microsco.e(SEM)co.firm that the hierarchically porous filaments with interco.nected carbon skeletons effectively suppress the volume change of silico. and maintain stable micro-lattice architecture.A 3D printed 3D-Si/G/C-1||3D-LiFePO_(4)/G full cell holds excellent cyclic stability(capacity retention rate of 78%after 50 cycles)with an initial co.lombic efficiency(ICE)of 96%.This work validates the feasibility of 3D printing on co.structing high mass loading silico. anode for practical high energy-density LIBs.

关键词： silico. anode areal capacity three-dimensional(3D)printing lithium-ion batteries

Effects of two silicone resin co.tings on performance of FeSiAl magnetic powder co.es

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Journal of Iron and Steel Research International 2024年第5期31卷 1279-1288页

作者： Jia-qi Liu Zheng-qu Zhu Pu Wang Yi-fan Li Jing Pang Jia-quan Zhang School of Metallurgical and Eco.ogical Engineering University of Science and Technology BeijingBeijing100083China Qingdao Yunlu advanced materials Technology co. Ltd.Qingdao266232ShandongChina

Two silico. resins with excellent thermal stability,JH1123 and JH7102,are used as the insulated agents and binders for the gas-atomized FeSiAl powder,and co.responding magnetic powder co.es(MPCs)are *** insulation capability and application prospects of the two silico. resins are evaluated by co.paring the magnetic properties of the co.ted powder and *** scanning electron microsco.y,energy dispersive X-ray spectrosco.y and fourier transform infrared spectrosco.y results show that uniform insulation layers are both formed on the powder ***1123 has stronger binding ability,and the JH1123-co.ted powder exhibits severe agglomeration,with d50(average particle size)approximately twice that of the JH7102-co.ted *** as-prepared MPCs exhibit outstanding soft magnetic ***,the permeability of FeSiAl@JH1123 is up to 74.0,which is 35.5%higher than that of FeSiAl@JH7102 because JH1123 can further improve the density of the *** for FeSiAl@JH7102,it has better direct current bias and lower co.e loss of 716.9 mW cm^(−3) at 20 mT and 1000 kHz due to its lower co.rcivity and greater anti-magnetic saturation ability.A co.prehensive co.parison shows that FeSiAl@JH1123 is suitable for medium and high frequency applications,while FeSiAl@JH7102 is more suitable for high frequency *** indicates that the use of JH1123 and JH7102 silico. resins for binding and insulated co.ting not only simplifies the preparation process of MPCs,but also enables the co.trolled production of MPCs for different applications.

关键词： FeSiAl Insulated co.ting Magnetic powder co.e Permeability co.e loss

Hydrodynamic analysis of carbon nanotube clusters in distributor-less co.ical fluidized beds with step-by-step scaling

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Chinese Journal of Chemical Engineering 2024年第3期67卷 117-125页

作者： Tianle Zhang Wenjuan Bai Qianpeng Dong Dianming Chu Lianlian Wang Yan He shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061China shandong Dazhan Nano materials co. Ltd.Binzhou 256220China

As a high-performance material with great application potential,the application of carbon nanotubes has been limited by their production volume.A distributor-less co.ical fluidized bed is the main equipment used in the industrial production of carbon *** improve the production volume and product quality of carbon nanotubes,the study of fluidized-bed-diameter scaling is *** different diameters of distributor-less co.ical fluidized beds were established,and then the particle behavior and bubble characteristics of carbon nanotube clusters at these bed diameters were ***-series and wavelet analysis methods were used to analyze the pressure-fluctuation signals inside the fluidized *** showed that the distributor-less design caused the airflow to break through the middle of the bed,which did not change with the change in bed *** powder-bridging phenomenon of carbon nanotube clusters in a 100-mm-diameter fluidized bed was related to the special microstructure of carbon nanotube *** frequency of pressure fluctuations in the bed decreased nonlinearly with increasing bed *** study can guide the design and scale-up of distributor-less co.ical fluidized beds,especially for the scale-up of carbon nanotube production equipment,which can co.tribute to the improvement of carbon nanotubes’capacity and quality in industrial production.

关键词： Carbon nanotubes Fluidized bed Multiphase flow Scale-up Multiscale

Nano-Au-deco.ated hierarchical porous co.alt sulfide derived from ZIF-67 toward optimized oxygen evolution catalysis:Important roles of microstructures and electronic modulation

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Carbon Energy 2024年第5期6卷 1-14页

作者： Hongyu Gong Guanliang Sun Wenhua Shi Dongwei Li Xiangjun Zheng Huan Shi Xiu Liang Ruizhi Yang Changzhou Yuan Department of New Energy materials School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiangJiangsuChina advanced materials Institute Qilu University of Technology(Shandong Academy of Sciences)JinanShandongChina shandong Saikesaisi Hydrogen Energy co. Ltd.JinanShandongChina Department of materials Science and Engineering School of Materials Science&EngineeringUniversity of JinanJinanShandongChina Department of New Energy Science and Engineering College of EnergySoochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouJiangsuChina

Enhancing both the number of active sites available and the intrinsic activity of co.based electrocatalysts simultaneously is a desirable ***,a ZIF-67-derived hierarchical porous co.alt sulfide deco.ated by Au nanoparticles(NPs)(denoted as HP-Au@co.Sy@ZIF-67)hybrid is synthesized by low-temperature sulfuration *** well-defined macroporous-mesoporous-microporous structure is obtained based on the co.bination of polystyrene spheres,as-formed co.Sy nanosheets,and ZIF-67 *** novel three-dimensional hierarchical structure significantly enlarges the three-phase interfaces,accelerating the mass transfer and exposing the active centers for oxygen evolution *** electronic structure of co.is modulated by Au through charge transfer,and a series of experiments,together with theoretical analysis,is performed to ascertain the electronic modulation of co.by ***,HP-Au@co.Sy@ZIF-67 catalysts with different amounts of Au were synthesized,wherein Au and NaBH4 reductant result in an interesting“co.petition effect”to regulate the relative ratio of co.(2+)/co.(3+),and moderate Au assists the electrochemical performance to reach the highest ***,the optimized HP-Au@co.Sy@ZIF-67 exhibits a low overpotential of 340 mV at 10 mA cm^(-2)and a Tafel slope of 42 mV dec-1 for OER in 0.1 M aqueous KOH,enabling efficient water splitting and Zn-air battery *** work here highlights the pivotal roles of both microstructural and electronic modulation in enhancing electrocatalytic activity and presents a feasible strategy for designing and optimizing advanced electrocatalysts.

关键词： Au nanoparticles co.alt sulfide electronic modulation hierarchical porous structure oxygen evolution reaction

Dielectric ultracapacitors based on co.umnar nano-grained ferroelectric oxide films with gradient phases along the growth direction

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Journal of advanced Ceramics 2024年第7期13卷 1072-1079页

作者： Chuanqi Song Feifan Zheng Yuan Zhang Hongbo Cheng Long Teng Kun Wang Hanfei Zhu Chao Liu Li Wang Zhengyan Liang Jun Ouyang Institute of advanced Energy materials and Chemistry School of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Department of materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Key Film materials&Application for Equipment(Hunan Province) School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China China Tobacco.shandong Industrial co. Ltd.Jinan 250104China

In this work,dielectric ultracapacitors were designed and fabricated using a co.bination of phase boundary and nanograin *** ultracapacitors are based on submicron-thick Ba(Zr_(0.2)Ti_(0.8))O_(3) ferroelectric films sputterdeposited on Si at 500℃.With a co.position near a polymorphic phase boundary(PPB),a co.pressive strain,and a high nucleation rate due to the lowered deposition temperature,these films exhibit a co.umnar nanograined microstructure with gradient phases along the growth *** a microstructure presents three-dimensional polarization inhomogeneities on the nanoscale,thereby significantly delaying the saturation of the overall electric ***,a pseudolinear,ultraslim polarization(P)-electric field(E)hysteresis loop was obtained,featuring a high maximum applicable electric field(~5.7 MV/cm),low remnant polarization(~5.2μC/cm^(2))and high maximum polarization(~92.1μC/cm^(2)).This P-E loop co.responds to a high recyclable energy density(Wrec~208 J/cm^(3))and charge‒discharge efficiency(~88%).An indepth electron microsco.y study revealed that the gradient ferroelectric phases co.sisted of tetragonal(T)and rhombohedral(R)polymorphs along the growth direction of the *** T-rich phase is abundant near the bottom of the film and gradually transforms into the R-rich phase near the *** films also exhibited a high Curie temperature of~460℃and stable capacitive energy storage up to 200℃.These results suggest a feasible pathway for the design and fabrication of high-performance dielectric film capacitors.

关键词： ferroelectric thin films energy storage phase co.xistence nanograin silico.

Tungsten separation behavior on preparation of high-purity cerium by co.bined vacuum gravity sedimentation-directional solidification

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Journal of Rare Earths 2024年第6期42卷 1182-1186,I0007页

作者： Dongwei Zhang Wenli Lu Minglei Xu Dehong Chen Xiaowei Zhang Chuang Yu Wensheng Yang Ruifeng Dong Zhiqiang Wang Liguo Han Zengdong Pang GRIREM Hi-Tech co. Ltd.Langfang065201China National Engineering Research Center for Rare Earth China GRINM Group Co.Ltd.Beijing100088China GRIREM advanced materials co. Ltd.Beijing100088China

In light of the difficult removal of harmful impurity tungsten(W)in Ce metal,in this paper a co.bined vacuum gravity sedimentation-directional solidification method was innovatively designed and the W separation behavior was *** reducing the electron beam power instantly and gradually at reduction rates of 1,3 and 5 kW/min,it is found that W is enriched at the bottom of ingots as the melt *** enrichment effect is much better than that of single purification method and the enrichment degree increases as the beam reduction rate decreases,attributed to the k0(W)>1 andρ(W)>ρ(Ce).Overall,the minimum co.tent of W impurity can decrease from 630 to 0.1 ppm at the top of the ingot,and the purity of Ce increases from 99.932 wt%to 99.995 wt%by this co.bined ***,this paper provides a new method for the removal of high density and low evaporation co.fficient impurities in low vapor pressure rare earth metals.

关键词： Cerium Electron beam melting Directional solidification Gravity sedimentation Rare earths

High reco.ded co.or rendering performance of single-structured Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)phosphor ceramics for high-power white LEDs/LDs

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Journal of advanced Ceramics 2024年第6期13卷 810-820页

作者： Xuanchu Liu co.gco.g Yang Yanbin Li Chang Min Jian Kang Tianyuan Zhou Chunming Zhou Chaofan Shi Cen Shao Bingheng Sun Wieslaw Strek Hao Chen Le Zhang Jiangsu Key Laboratory of advanced Laser materials and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangsu Xiyi advanced materials Research Institute of Industrial Technology Xuzhou 221400China Xuzhou EAGLED Technology co. Ltd.Xuzhou 221116China Xuzhou Kangna advanced materials Technology co. Ltd.Xuzhou 221116China Shanghai Institute of Optics Fine Mechanics Chinese Academy of SciencesShanghai 201800China Institute of Low Temperature and Structure Research Polish Academy of SciencesWroclaw 50-422Poland State Key Laboratory of Crystal materials Shandong UniversityJinan 250100China

Achieving a high co.or rendering index(CRI)and luminous stability in single-structured Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs)is crucial for high-power white light-emitting diodes or laser diodes(LEDs/LDs).However,cyan valleys and insufficient amounts of the red co.ponent in the Ce:YAG emission spectra significantly limit their real *** this work,a series of Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)(Ce,Mn:YSAG)PCs were fabricated by vacuum sintering,and efficient spectral regulation was realized for full-co.or *** cyan valley was filled by the blueshifted emission peak of Ce^(3+)via Sc^(3+)*** orange‒red emission at approximately 580 nm was effectively supplemented via Mn^(2+)*** particular,CRI of Ce,Mn:YSAG increased from 56.4 to 85.8,a 52%increase co.pared with that of Ce:YAG under high-power LED excitation,and the operating temperature was stable at approximately 50℃for long working ***,CRI of 80.9 co.ld still be obtained for PC-based white *** results indicated that Ce,Mn:YSAG PC,which has excellent CRI and luminous stability,is an extremely promising co.or co.vertor for high-power white LEDs/LDs.

关键词： co.or rendering index(CRI) co.or co.verter Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs) high-power white light-emitting diodes or laser diodes(LEDs/LDs) luminous stability

Waste acid reco.ery utilizing monovalent cation permselective membranes through selective electrodialysis

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Chinese Journal of Chemical Engineering 2024年第7期71卷 45-57页

作者： Yanran Zhu Yue Zhou Qian Chen Rongqiang Fu Zhaoming Liu Liang Ge Tongwen Xu Anhui Provincial Engineering Laboratory of Functional Membrane materials and Technology Department of Applied ChemistrySchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Charged Polymeric Membrane materials of shandong Province Shandong Tianwei Membrane Technology Co.Ltd.Weifang 261000China

Selective electrodialysis(SED)has surfaced as a highly promising membrane separation technique in the realm of acid reco.ery owing to its ability to effectively separate monovalent ions through the utilization of a potential ***,the current SED process is limited by co.ventional co.mercial monovalent cation permselective membranes(MCPMs).This study systematically investigates the use of an independently developed MCPM in the SED process for acid *** factors such as current density,volume ratio,initial ion co.centration,and waste acid systems are *** independently developed MCPM offers several advantages over the co.mercial monovalent selective cation-exchange membrane(CIMS),including higher reco.ered acid co.centration,better ion flux ratio,improved acid reco.ery efficiency,increased reco.ered acid purity,and higher current *** SED process with the MCPM achieves a reco.ered acid of 95.9%and a co.centration of 2.3 mol·L^(–1) in the HCl/FeCl_(2) system,when a current density of 20 mA·cm^(-2) and a volume ratio of 1:2 are ***,in the H_(2)SO_(4)/FeSO_(4) system,a purity of over 99%and a co.centration of 2.1 mol·L^(–1) can be achieved in the reco.ered *** study thoroughly examines the impact of operation co.ditions on acid reco.ery performance in the SED *** independently developed MCPM demonstrates outstanding acid reco.ery performance,highlighting its potential for future co.mercial utilization.

关键词： Selective electrodialysis Wastewater Monovalent cation permselective membranes Separation Reco.ery

Effect of phase transition during roasting of Mountain Pass rare earth co.centrate on leaching efficiency of rare earths

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Journal of Rare Earths 2024年第2期42卷 409-414,I0006页

作者： Yanyan Zhao Xu Sun Deliang Meng Xiangsheng Liu Qiang Zhong Zongyu Feng National Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.Beijing0088China Rare Earth Functional materials(Xiong'an)Innovation Center co. Ltd.Xiongan071700China General Research Institute for Nonferrous Metals Beijing100088China

To find a greener and more eco.omical approach for treating the Mountain Pass rare earth co.centrate(MPREC),a novel "co.bination Method",including the processes of oxidizing roasting,HCI leaching and sulfuric acid roasting,is proposed in this *** this paper,the effect of phase transition behavior in hydrochloric acid leaching during oxidative roasting at 450-600℃ was *** roasting,the bastnasite in MPREC is deco.posed into CeLa_(2)O_(3)F_(3) and(Ce_(0.33),La_(0.33),Ca_(0.33))O_(1.5).As the CeLa_(2)O_(3)F_(3) phase has the fluorine-fixation effect,the generated CeLa_(2)O_(3)F_(3) phase can not be dissolved by HCI after roasting at 500 and 550℃,but it can be deco.posed by HCI after roasting at over 600℃,resulting in the improvement of the leaching rate of total F *** maximum leaching efficiency of rare earth elements(REEs) can reach 70.32 wt% at the roasting temperature of 550℃.After roasting at over 600℃,some F^-ions in the solution co.bined with RE^(3+) to form REF_(3) precipitate and enter the leaching residue,and the others are in the form of [CeF_(3)]^+ in the leaching solution during leaching,therefore,the leaching efficiency of non-ce rium REEs decreases while that of cerium element *** work provides basic research for optimizing the actual production process of MPREC.

关键词： Mountain pass rare earth mine Roasting Phase change Rare earths