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NH_(4)^(+)-Modulated Cathodic Interfacial Spatial Charge Redistribution for High-Performance Dual-Ion Capacitors

Nano-Micro Letters 2025年第5期17卷 391-406页

作者： Yumin Chen Ziyang Song Yaokang Lv Lihua Gan Mingxian Liu shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092People’s Republic of China co.lege of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014People’s Republic of China

co.pared with Zn^(2+),the current mainly reported charge carrier for zinc hybrid capacitors,small-hydrated-sized and light-weight NH_(4)^(+)is expected as a better one to mediate cathodic interfacial electrochemical behaviors,yet has not been *** we propose an NH_(4)^(+)-modulated cationic solvation strategy to optimize cathodic spatial charge distribution and achieve dynamic Zn^(2+)/NH_(4)^(+)co.storage for boosting Zinc hybrid *** to the hierarchical cationic solvated structure in hybrid Zn(CF_(3)SO_(3))_(2)–NH_4CF_(3)SO_(3)electrolyte,high-reactive Zn^(2+)and small-hydrate-sized NH_4(H_(2)O))(4)^(+)induce cathodic interfacial Helmholtz plane reco.figuration,thus effectively enhancing the spatial charge density to activate 20%capacity ***,cathodic interfacial adsorbed hydrated NH_(4)^(+)ions afford high-kinetics and ultrastable C···H(NH_(4)^(+))charge storage process due to a much lower desolvation energy barrier co.pared with heavy and rigid Zn(H_(2)O)_6^(2+)(5.81 vs.14.90 eV).co.sequently,physical uptake and multielectron redox of Zn^(2+)/NH_(4)^(+)in carbon cathode enable the zinc capacitor to deliver high capacity(240 mAh g^(-1)at 0.5 A g^(-1)),large-current tolerance(130 mAh g^(-1)at 50 A g^(-1))and ultralong lifespan(400,000cycles).This study gives new insights into the design of cathode–electrolyte interfaces toward advanced zinc-based energy storage.

关键词： NH_(4)^(+)-modulated cathodic interface Spatial charge redistribution Zn^(2+)/NH_(4)^(+) co.storage Dual-ion capacitor

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Improvement on application of Danco.f factor and resonance interference table

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Nuclear Science and Techniques 2016年第2期27卷 122-130页

作者： Yu Han Xiao-Feng Jiang De-Zhong Wang School of Nuclear Science and Engineering Shanghai Jiaotong University Shanghai 200240 China shanghai NuStar Nuclear Power Technology co. Ltd.Shanghai 200000 China

An improvement for application of Danco.f factor is developed. It co.bines Stamm'ler's two-term method for resonance integral calculation with neutron current method for Danco.f factor calculation. Stamm'ler's formulation, which is originally derived for the infinite lattice geometry, can be easily revised to co.tain the Danco.f factor explicitly, while the neutron current method can easily calculate the Danco.f factor for general irregular assembly geometry. For the resonance interference effects the resonance interference factor table is built in pairs of nuclides, only for the interference between 238 U and other resonance nuclides, spanning over a range of background cross-section and number density ratio of the pairing nuclides. A series of verification calculations have been carried out for problems of infinite lattice and single assembly geometry, with two or multiple resonance absorbers. For these verification calculations, our improvement on Danco.f factor application and resonance interference give good results.

关键词：共振干涉因子和应用积分计算几何形状干涉效应中子流核素

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Cluster and characteristic analysis of shanghai metro stations based on metro card and land-use data

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Geo-Spatial Information Science 2020年第4期23卷 352-361页

作者： Ping Shen Linxin Ouyang Chong Wang Yin Shi Yiheng Su Guangzhou Urban Planning&Design Survey Research Institute GuangzhouChina shanghai Tongji Urban Planning&Design Institute co. Ltd.ShanghaiChina Tongji Architectural Design(Group)co. Ltd.ShanghaiChina shanghai Urban Planning and Design Research Institute ShanghaiChina

Metro is an important form of public transport in *** on the metro card data,we co.duct the cluster analysis of shanghai metro stations acco.ding to the pattern of passenger flow changing with *** the characteristics of travel time and surrounding land use are investigated for different types of stations to explore the relationship between urban land-use characteristics and travel activities reflected by passenger flow at metro *** is found that the passenger flow pattern of metro stations is closely related to the location co.ditions of stations and its surrounding land-use *** on various characteristics,285 metro stations are classified into four types,including residential-oriented stations,employmentoriented stations,employment-residence-oriented stations,and integrated functionaloriented stations,reflecting the interaction between spontaneous travel behavior and urban land-use characteristics and providing a reference for optimizing the urban functional structure and the spatial allocation of facilities.

关键词： Metro stations travel behavior pattern metro card data land use

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Performance improvement of CdS/Cu(In,Ga)Se_2 solar cells after rapid thermal annealing

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Chinese Physics B 2013年第1期22卷 564-568页

作者：陈东生杨洁徐飞周平华杜汇伟石建伟于征汕张玉红 Brian Bartholomeusz 马忠权 SHU-SolarE R & D Laboratory Department of Physics Shanghai University co.lege of Mathematics and Physics Shanghai University of Electric Power shanghai Solar EnerTech co. Ltd Applied Quantum Technology Ltd. co. USA

In this paper, we investigated the effect of rapid thermal annealing （RTA） on solar cell performance. An opto-electric co.version efficiency of 11.75% （Voc = 0.64 V, Jsc = 25.88 mA/cm2, FF=72.08%） was obtained under AM 1.5G when the cell was annealed at 300℃ for 30 s. The annealed solar cell showed an average absolute efficiency 1.5% higher than that of the as-deposited one. For the microstructure analysis and the physical phase co.firmation, X-ray diffraction （XRD）, Raman spectra, front surface reflection （FSR）, internal quantum efficiency （IQE）, and X-ray photoelectron spectrosco.y （XPS） were respectively applied to distinguish the causes inducing the efficiency variation. All experimental results implied that the RTA eliminated reco.bination centers at the p-n junction, reduced the surface optical losses, enhanced the blue response of the CdS buffer layer, and improved the ohmic co.tact between Mo and Cu（In, Ga）Se2 （CIGS） layers. This leaded to the improved performance of CIGS solar cell.

关键词： CdS/Cu(In,Ga)Se2 solar cell rapid thermal annealing performance improvement

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Effect of the back surface topography on the efficiency in silico. solar cells

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Journal of Semico.ductors 2009年第7期30卷 48-50页

作者：郭爱娟叶发敏郭里辉纪冬冯仕猛 Solar Energy Institute Department of Physics Shanghai Jiaotong University shanghai Topsolar Green Energy co. Ltd

Different processes are used on the back surface of silico. wafers to form cells falling into three groups：textured, planar, and sawed-off pyramid back *** characteristic parameters of the cells, ISC, VOC, FF, Pm, and Eff, are *** these parameters of the planar back surface cells are the *** FF, Pm, and Eff of sawed-off pyramid back surface cells are superior to textured back surface cells, although ISC and VOC are *** parasitic resistance is analyzed to explain the higher FF of the sawed-off pyramid back surface *** cross-section scanning electron microsco.y（SEM） pictures show the uniformity of the aluminum-silico. alloy, which has an important effect on the back surface reco.bination velocity and the ohmic *** measured value of the aluminum back surface field thickness in the SEM picture is in good agreement with the theoretical value deduced from the Al-Si phase *** is shown in an external quantum efficiency（EQE） diagram that the planar back surface has the best response to a wavelength between 440 and 1000 nm and the sawed-off back surface has a better long wavelength response.

关键词： planar back surface aluminum-silico. co.tact back surface field

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Influence of Fe co.tamination on the Minority Carrier Lifetime of Multi-crystalline Silico.

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Chinese Physics Letters 2010年第7期27卷 184-187页

作者：孟夏杰马忠权李凤沈成段晏庭赵磊李拥华徐飞 SHU-SOLARE R&D Joint-Lab Department of Physics Shanghai University Shanghai 200444 Solar EnerTech (shanghai) co. Ltd Shanghai 201206

We investigate the influence of Fe co.tamination on the minority carrier lifetimes of multi-crystalline silico.. The minority carrier lifetime is measured by the microwave photoco.ductive decay method. The original bulk lifetime is about 30μs after passivation with iodine solution. After intentional Fe co.tamination, the bulk lifetime declines with increasing temperature. Fast co.ling in air co.duces to the formation of more interstitial Fe （[Fe]i）. Slow co.ling through the co.trol of the furnace temperature limits the formation of more [Fe]i, but leads to the formation of precipitation. The data support the idea that the minority carrier lifetime in multi-crystalline silico. mainly depends on the distribution of Fe but not the total amount. A favorite effect of [Fe]i gettering is disco.ered after co.ventional phosphorus diffusion, and the [Fe]i co.centration remaining in the silico. wafer is acceptable for solar cell applications.

关键词： co.TAMINATION (Technology) IRON -- Fatigue SILIco. CRYSTALLINE interfaces PHOTOco.DUCTIVITY PRECIPITATION (Chemistry) PARTICLE size distribution

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Automated identification of steel weld defects,a co.volutional neural network improved machine learning approach

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Frontiers of Structural and Civil Engineering 2024年第2期18卷 294-308页

作者： Zhan SHU Ao WU Yuning SI Hanlin DONG Dejiang WANG Yifan LI School of Mechanics and Engineering Science Shanghai UniversityShanghai 200444China School of Civil Engineering Shanghai Normal UniversityShanghai 201418China shanghai PinlanData Technology co. Ltd.Shanghai 200072China

This paper proposes a machine-learning-based methodology to automatically classify different types of steel weld defects,including lack of the fusion,porosity,slag inclusion,and the qualified(no defects)*** methodology solves the shortco.ings of existing detection methods,such as expensive equipment,co.plicated operation and inability to detect internal *** study first co.lected percussed data from welded steel members with or without weld ***,three methods,the Mel frequency cepstral co.fficients,short-time Fourier transform(STFT),and co.tinuous wavelet transform were implemented and co.pared to explore the most appropriate features for classification of weld *** and co.volutional neural network-enhanced algorithms were used to classify,the extracted ***,experiments were designed and performed to validate the proposed *** showed that STFT achieved higher accuracies(up to 96.63%on average)in the weld status *** co.volutional neural network-enhanced support vector machine(SVM)outperformed six other algorithms with an average accuracy of 95.8%.In addition,random forest and SVM were efficient approaches with a balanced trade-off between the accuracies and the co.putational efforts.

关键词： steel weld machine learning co.volutional neural network weld defect detection classification task percussion

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Back Frame Optimization of a Large Radio Telesco.e Based on Force co.e Method

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Wuhan University Journal of Natural Sciences 2022年第5期27卷 424-438页

作者： WU Qinglong YAO Zhan WU Tanhui FANG Houfei HOU Yangqing shanghai YueSheng Information Technology co. Shanghai 201108China

A new research perspective is proposed to optimize the topology of truss structure by force co.e method,which involves force co.e drawing rules and growth *** the co.parison with the mature variable density topology optimization method,the effectiveness of force co.e method is *** kind of new method is simple and easy to understand(no need to master co.plex structural optimization design theory).Besides,it is time-saving in finite element calculations,and can obtain an optimized truss layout *** drawing the force co.e,its application on a large radio telesco.e’s back frame structure shows that,co.pared with the existing one in terms of structural stiffness,Root Mean Square(RMS)precision,and beam stress distribution,the optimized back frame using the force co.e method has higher stiffness,better RMS,more uniform stress,and lighter weight.

关键词： large radio telesco.e back frame force co.e method topology optimization

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Effects of Alloy Elements on Oxidation Resistance and Stress-Rupture Property of P92 Steel

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Acta Metallurgica Sinica(English Letters) 2015年第2期28卷 129-138页

作者： Gang Liu Yu-Lai Xu Cai-Xiong Yang Xue-Shan Xiao Xi-Min Chen Xiao-Ke Zhang Xiang-Jun Meng Laboratory for Microstructures Institute of Materials Shanghai University Baosteel Special Materials co. Ltd

Effects of alloy elements Cr, W, Ce, and Si on oxidation behavior at 750℃ in air and stress-rupture properties of P92 steel have been investigated. The proper increase in elements Cr, W, and Ce improved to varying degrees both oxidation resistance by either facilitating more protective Cr2O3 or modifying surface morphologies and stress-rupture life largely attributed to the formation of fine Laves phase. The excessive addition of Si significantly improved oxidation resistance of P92 steel, but dramatically impaired the stress-rupture life due to the formation and co.rsening of Laves phase. The results indicate that proper additions of Cr, W, and Ce are beneficial for the co.prehensive property of P92 steel.

关键词： P92 Oxidation resistance Stress-rupture property Microstructure

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A LATTICE BOLTZMANN METHOD FOR SIMULATION OF A THREE-DIMENSIONAL DROP IMPACT ON A LIQUID FILM

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Journal of Hydrodynamics 2008年第3期20卷 267-272页

作者： SHI Zi-yuan YAN Yong-hua YAN-G Fan QIAN Yue-hong HU Guo-hui shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China shanghai Key Laboratory of Mechanics in Energy and Environment Engineering Shanghai 200072 China shanghai East Pump （Group） co. Ltd Shanghai 201907 China

A single-phase free surface tracking model based on the Lattice Boltzmann Method （LBM）, which has capability of simulating liquid-gas system with the assumption that the gas phase has only negligible influence on the liquid phase, is utilized to simulate the flow of a drop impacting on a liquid film. Three typical outco.es in the flows, i.e., deposition, crown and splash, which have been observed in the previous experiments, are obtained in the present three dimensional numerical simulations. The numerical results are co.sistent with the experimental and analytical results available.

关键词： Lattice Boltzmann Method (LBM) drop impact two-phase flows thin film

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