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High-performance polarization-sensitive photodetectors on two-dimensional β-InSe

National science Review 2022年第5期9卷 30-36页

作者： Zhinan Guo Rui cao Huide {1. Xi zhang Fanxu Meng Xue Chen Siyan Gao David K.Sang Thi Huong Nguyen Anh Tuan Duong Jinlai Zhao Yu-Jia zeng Sunglae Cho Bing Zhao Ping-Heng Tan Han zhang Dianyuan Fan Institute of Microscale Optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology College of Physics and Optoelectronic EngineeringShenzhen University Institute of Nanosurface science and {1. Guangdong Provincial Key Laboratory of MicroNano Optomechatronics EngineeringShenzhen University State key {1. of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences Department of Physics and Energy Harvest-Storage Research Center University of Ulsan State key {1. of Supramolecular Structure and materials Jilin University

Two-dimensional(2D) indium selenide(InSe) has been widely studied for application in transistors and photodetectors,which benefit from its excellent optoelectronic *** the three specific polytypes(γ-,ε-and β-phase) of InSe,only the crystal lattice of InSe in β-phase(β-InSe) belongs to a non-symmetry point group of D6 h~4,which indicates stronger anisotropic transport behavior and potential in the polarized photodetection of β-InSe-based optoelectronic ***,we prepare the stable p-type 2D-layered β-InSe via temperature gradient *** anisotropic Raman,transport and photoresponse properties of β-InSe have been experimentally and theoretically proven,showing that theβ-InSe-based device has a ratio of 3.76 for the maximum to minimum dark current at two orthogonal orientations and a high photocurrent anisotropic ratio of 0.70 at 1.V bias voltage,*** appealing anisotropic properties demonstrated in this work clearly identify β-InSe as a competitive candidate for filter-free polarization-sensitive photodetectors.

关键词： 2D materials polarization photodetectors

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Ferric ion-ascorbic acid complex catalyzed calcium peroxide for organic wastewater treatment:Optimized by response surface method

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Chinese Chemical Letters 2021年第11期32卷 3387-3392页

作者： Deling Yuan Chen zhang Shoufeng Tang {1.tao wang Qina Sun Xiaoyu zhang Tifeng Jiao Qingrui zhang Hebei key {1. of Heavy Metal Deep-Remediation in Water and Resource Reuse Hebei Key Laboratory of Applied ChemistrySchool of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China State key {1. of metastable materials science and technology Yanshan UniversityQinhuangdao 066004China

Hydrogen peroxide(H_(2)O_(2))disproportionation,iron precipitation,and narrow pH range are the drawbacks of traditional Fenton *** surmount these barriers,we proposed a ferric ion(Fe^(3+))-ascorbic acid(AA)complex catalyzed calcium peroxide({1._(2))Fenton-like system to remove organic dyes in *** collaborative Fe^(3+)/AA/{1._(2)system presented an obvious improvement in the methyl orange(MO)decolorization,and also effectively eliminated other *** surface method was employed to optimize the running parameters for this coupling *** the optimized arguments(2.76 mmol/L Fe^(3+),0.68 mmol/L AA,and 4 mmol/L {1._(2)),the MO removal achieved 98.90%after 1. min at pH 6.50,which was close to the computed outcome of 99.30%.Furthermore,this Fenton-like system could perform well in a wide range of pH(3-1.),and enhance the H_(2)O_(2)decomposition and Fe ions *** scavenger experiment result indicated that hydroxyl radical,superoxide anion free radical,and singlet oxygen were acted on the dye ***,electron spin resonance analysis corroborated that the existences of these active species in the Fe^(3+)/AA/{1._(2)*** study could advance the development of Fenton-like technique in organic effluent disposal.

关键词： Ferric ion Ascorbic acid Calcium peroxide Response surface method Dye removal

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Rejuvenating LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cathode directly from battery scraps

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escience 2023年第2期3卷 112-122页

作者： Yaqing Guo Chi Guo Pengjie Huang Qigao Han Fuhe wang Hao {1. Honghao Liu Yuan-Cheng cao Yonggang Yao Yunhui Huang State key {1. of materials Processing and Die&Mould technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074 China State key {1. of Advanced Electromagnetic engineering and technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China key {1. of Optoelectronic Chemical materials and Devices Ministry of EducationSchool of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056China

Battery recycling is indispensable for alleviating critical material shortages and enabling sustainable battery ***,current methods mostly focus on spent batteries,which not only require sophisticated disassembly and material extraction but also have unknown chemistries and states of health,resulting in high costs and extreme challenges to achieve ***,we propose the direct recycling and effective regeneration of air-degraded LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)cathode directly from battery scraps generated during battery *** NCM523 shows surface degradation only a few nanometers deep and accordingly can be regenerated without adding Li,achieving restored properties(1.0 mAh g^(-1. at 0.1.C,92.7%retention after 1.00 cycles)similar to those of fresh commercial *** analysis shows that scrap recycling has a profit of$1.984 kg^(-1.,which is~1. times higher than conventional recycling,making it practical and economical to rejuvenate slightly degraded electrode materials for sustainable battery manufacturing.

关键词： Battery scrap Battery recycling Air degradation Cathode regeneration Techno-economic analysis

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Ultrahigh power factors in P-type 1.-ZrX_2(X=S, Se)single layers

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science Bulletin 2017年第22期62卷 1530-1537页

作者： Ying-Xiang Zhen Ming Yang Hang zhang Guang-Sheng Fu Jiang-Long {1. Shu-Fang {1. Rui-Ning {1. Hebei key {1. of Optic-Electronic Information and materials College of Physics Science and TechnologyHebei University Institute of engineering Thermophysics Chinese Academy of Sciences

The thermoelectric performances of 1.T-ZrX_2(X=S and Se) single layers were investigated using a combination of density functional calculations and semi-classical Boltzmann transport theory. Because of the high hole mobilities at 300 K, ultrahigh power factors(PF = S^2σ) were found in the P-type compounds;these values were ~ 1..95 and ~1..58 mWK ~2 m^1.for 1.-ZrS_2 and 1.-ZrSe_2 single layers, ***, because of the Lorenz relation between the electrical conductivity(σ) and an electron's thermal conductivity(K_(el)) given by the Wiedemann-Franz law, the electronic figures of merit(Z_(el)T = PF T/K_(el)) at 300 K were approximately 0.67 and 0.75 for the N-and P-type 1.-ZrSe_2, respectively. In addition, the lattice thermal conductivities(K_(Ph)) were calculated, giving values of ~1.43 and ~0.97 W K ~1.m^1.for 1.-ZrS_2 and 1.-ZrSe_2 single layers, respectively. Therefore, because of the lower K_(Ph)/K_(el) ratio, the P-type 1.-ZrX_2 single layers possess higher fngure-of-merits(ZT = Z_(el)T/(1.(K_(Ph)/K_(el))) than their counterparts. This signifies that the P-type samples demonstrate better thermoelectric performance than the N-type ones. The thermoelectric properties of metastable 2H-ZrX_2(X = S and Se) single layers were also investigated.

关键词： Thermoelectric property Zirconium dichalcogenides Density functional theory Boltzmann-transport theory

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Successive Free-Radical C(sp^(2))-C(sp^(2)) Coupling Reactions to Form Graphene

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CCS Chemistry 2022年第2期4卷 584-597页

作者： Huaqiang cao Cheng {1. Baojun Li Tianyu Chen Peng Han Yan zhang Haijun Yang Qunyang Li Anthony K.Cheetham Department of Chemistry Tsinghua UniversityBeijing 100084 Beijing Advanced Innovation Center for Imaging technology and {1. laboratory of Terahertz Optoelectronics(MoE) Department of PhysicsCapital Normal UniversityBeijing 100048 Applied Mechanics laboratory Department of Engineering MechanicsSchool of Aerospace EngineeringTsinghua UniversityBeijing 100084 Department of materials {1. and Metallurgy University of CambridgeCambridge CB30FS materials Research {1. University of CaliforniaSanta BarbaraSanta BarbaraCA 93106

Graphene is of great interest because of its exciting properties and potential applications,but its production on a large-scale still presents considerable ***,we report the synthesis of predominately few-layer graphene,due toπ–πstacking,and single-layer graphene from reaction between hexabromobenzene and Na metal,followed by annealing to improve *** reaction proceeds via a free-radical C(sp^(2))–C(sp^(2))coupling mechanism,which is supported by theoretical *** graphene can host unpaired spin electrons,leading to a short acquisition time for a solidstate nuclear magnetic resonance 1.C spectrum from unlabeled graphene,which is ascribed to the very short spin-lattice relaxation *** catalytic activity for transforming amine to imine with a conversion of>99%and a yield of∼97%is demonstrated,and high electronic conductivity of∼1.5 S·m^(−1. is found by terahertz *** reaction delivers a method for synthesizing graphene with a high spin concentration from perbrominated benzene molecules by using an active metallic agent,such as Na,Li,or Mg.

关键词： graphene synthesis radical C(sp^(2))-C(sp^(2))coupling high electron spin density short spin-lattice relaxation metal-free amine conversion catalyst

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Raman and infrared spectra of complex low energy tetrahedral carbon allotropes from first-principles calculations

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Chinese Physics B 2020年第9期29卷 311-319页

作者： Hui wang {1.-Yu zhang Xiao-Wu Cai Zi-Han Liu Yong-Xiang zhang Zhen-Long Lv Wei-Wei Ju Hui-Hui Liu Tong-Wei Li Gang Liu Hai-Sheng Li Hai-Tao Yan Min Feng Henan key {1. of Photoelectric Energy Storage materials and Applications School of Physics EngineeringHenan University of Science and TechnologyLuoyang 471023China First High School of Luoyang City Luoyang 471001China Institute of Microelectronics of Chinese Academy of sciences Beijing 100029China School of Physics Nankai UniversityTianjin 300071China

Up to now,at least 806 carbon allotropes have been proposed *** interesting carbon allotropes(named Pbam-32,P6/mmm,and I43d)were recently uncovered based on a random sampling strategy combined with space group and graph *** calculation results show that they are superhard and remarkably stable compared with previously proposed metastable *** indicates that they are likely to be synthesi{1.d in *** use the factor group analysis method to analy{1. theirΓ-point vibrational *** to their large number of atoms in primitive unit cells(32 atoms in Pbam-32,36 atoms in P6/mmm,and 94 atoms in I43d),they have many Raman-and infrared-active *** are 48 Raman-active modes and 37 infrared-active modes in Pbam-32,24 Raman-active modes and 1. infrared-active modes in P6/mmm,and 34 Raman-active modes and 35 Raman-and infrared-active modes in *** calculated Raman spectra can be divided into middle frequency range from 600 cm-1.to 1.50 cm-1.and high frequency range above 1.50 *** largest infrared intensities are 0.82,0.77,and 0.70(D/Å)2/amu for Pbam,P6/mmm,and I43d,*** calculated results provide an insight into the lattice vibrational spectra of these sp3 carbon allotropes and suggest that the middle frequency Raman shift and infrared spectrum may play a key role in identifying newly proposed carbon allotropes.

关键词： Raman and infrared spectra carbon allotrope first-principles calculation

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Site-Selective Polyolefin Hydrogenolysis on Atomic Ru for Methanation Suppression and Liquid Fuel Production

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Research 2023年第3期6卷 423-432页

作者： Mingyu Chu Xianpeng wang Xuchun wang Xiangxi Lou Congyang zhang Muhan cao Lu wang Youyong Li Sibao Liu Tsun-Kong Sham Qiao zhang Jinxing Chen Institute of Functional Nano&Soft materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123P.R.China Department of Chemistry University of Western OntarioLondonOntario N6A 5B7Canada key {1. of Superlight materials and Surface technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China key {1. for Green Chemical technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Catalytic hydrogenolysis of end-of-life polyolefins can produce value-added liquid fuels and therefore holds great promises in plastic waste reuse and environmental *** major challenge limiting the recycling economic benefit is the severe methanation(usually>20%)induced by terminal C–C cleavage and fragmentation in polyolefin ***,we overcome this challenge by demonstrating that Ru single-atom catalyst can effectively suppress methanation by inhibiting terminal C–C cleavage and preventing chain fragmentation that typically occurs on multi-Ru *** Ru single-atom catalyst supported on CeO_(2)shows an ultralow CH_(4)yield of 2.2%and a liquid fuel yield of over 94.5%with a production rate of 31..93 gfuels gRu^(−1.h^(−1.at 250℃for 6 *** remarkable catalytic activity and selectivity of Ru single-atom catalyst in polyolefin hydrogenolysis offer immense opportunities for plastic upcycling.

关键词： catalyst olefin fragmentation

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Milling Force Model for Aviation Aluminum Alloy: Academic Insight and Perspective Analysis

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Chinese Journal of Mechanical engineering 2021年第1期34卷 54-88页

作者： Zhenjing Duan Changhe Li Wenfeng Ding Yanbin zhang Min Yang Teng Gao Huajun {1. Xuefeng Xu Dazhong wang Cong Mao Hao Nan Li Gupta Munish Kumar Zafar Said Sujan Debnath Muhammad Jamil Hafiz Muhammad Ali School of Mechanical and Automotive engineering Qingdao University of TechnologyQingdao 266520China college of Mechanical and Electrical {1. Nanjing University of Aeronautics and AstronauticsNanjing 210016China State key {1. Mechanical Transmiss Chongqing UniversityChongqing 400044China key {1. of Special Purpose Equipment and Advanced Processing technology Ministry of Educati on&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310032China School of Mechanical and Automotive engineering Shanghai University of Engineering ScienceShanghai 201620China college of Automotive and Mechanical {1. Changsha University of Science and TechnologyChangsha 410114China School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China key Lab High Efficiency and Clean Mech Manufacture Shandong UniversityJinan 250100China college of {1. University of Sharjah27272 SharjahUnited Arab Emirates Mechanical engineering Department Curtin University98009 MiriMalaysia Mecha nical engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Aluminum alloy is the main structural material of aircraft,launch vehicle,spaceship,and space station and is processed by ***,tool wear and vibration are the bottlenecks in the milling process of aviation aluminum *** machining accuracy and surface quality of aluminum alloy milling depend on the cutting parameters,material mechanical properties,machine tools,and other *** particular,milling force is the crucial factor to determine material removal and workpiece surface ***,establishing the prediction model of milling force is important and difficult because milling force is the result of multiparameter coupling of process *** research progress of cutting force model is reviewed from three modeling methods:empirical model,finite element simulation,and instantaneous milling force *** problems of cutting force modeling are also *** view of these problems,the future work direction is proposed in the following four aspects:(1.high-speed milling is adopted for the thin-walled structure of large aviation with large cutting depth,which easily produces high residual *** residual stress should be analyzed under this particular condition.(2)Multiple factors(e.g.,eccentric swing milling parameters,lubrication conditions,tools,tool and workpiece deformation,and size effect)should be considered comprehensively when modeling instantaneous milling forces,especially for micro milling and complex surface machining.(3)The database of milling force model,including the corresponding workpiece materials,working condition,cutting tools(geometric figures and coatings),and other parameters,should be established.(4)The effect of chatter on the prediction accuracy of milling force cannot be ignored in thin-walled workpiece milling.(5)The cutting force of aviation aluminum alloy milling under the condition of minimum quantity lubrication(mql)and nanofluid mql should be predicted.

关键词： Milling Aluminum alloy Force model Empirical model Finite element model Instantaneous milling force model

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Effect of ternary transition metal sulfide FeNi_(2)S_(4)on hydrogen storage performance of MgH_(2)

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Journal of Magnesium and Alloys 2023年第8期11卷 2927-2938页

作者： Yaokun Fu Lu zhang Yuan Li Sanyang Guo Han Yu Wenfeng {1. Kailiang Ren Wei zhang Shumin Han State key {1. of metastable materials science and technology Yanshan UniversityQinhuangdao 066004China Hebei key {1. of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China

Hydrogen storage is a key link in hydrogen economy,where solid-state hydrogen storage is considered as the most promising approach because it can meet the requirement of high density and ***,magnesium-based {1.(MgH_(2))are currently deemed as an attractive candidate due to the potentially high hydrogen storage density(7.6 wt%),however,the stable thermodynamics and slow kinetics limit the practical *** this study,we design a ternary transition metal sulfide FeNi_(2)S_(4)with a hollow balloon structure as a catalyst of MgH_(2)to address the above issues by constructing a MgH_(2)/Mg_(2)NiH_(4)-MgS/Fe ***,the dehydrogenation/hydrogenation of MgH_(2)has been significantly improved due to the synergistic catalysis of active species of Mg_(2)Ni/Mg_(2)NiH_(4),MgS and Fe originated from the MgH_(2)-FeNi_(2)S_(4)*** hydrogen absorption capacity of the MgH_(2)-FeNi_(2)S_(4)composite reaches to 4.02 wt%at 373 K for 1.h,a sharp contrast to the milled-MgH_(2)(0.67 wt%).In terms of dehydrogenation process,the initial dehydrogenation temperature of the composite is 80 K lower than that of the milled-MgH_(2),and the dehydrogenation activation energy decreases by 95.7 kJ·mol-1.compared with the milled-MgH_(2)(1.1.2 kJ·mol^(-1.).This method provides a new strategy for improving the dehydrogenation/hydrogenation performance of the MgH_(2)material.

关键词： Hydrogen storage materials Magnesium hydride FeNi_(2)S_(4) Hydrogen storage kinetics Catalysts

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Monoclinic Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts/reduced graphene oxide:A novel high-capacity and long-life composite for potassium-ion battery anodes

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Journal of Energy Chemistry 2022年第3期31卷 140-151,I0005页

作者： liming Ling Xiwen {1. Yu Li Chenxiao Lin Dong Xie Min zhang Yan zhang Jinjia Wei Huajie Xu Faliang Cheng Chuan Wu Shiguo zhang Guangdong engineering and {1. Research Center for Advanced Nanomaterials School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808GuangdongChina college of {1. science and engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina School of Chemical engineering and {1. Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Beijing key {1. of Environmental science and engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China key {1. of materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Developing suitable anode materials for potassium-ion batteries(PIBs)remains a great challenge owing to the limited theoretical capacity of active materials and large radius of K+ion(1.38?).To solve these obstacles,by integrating the principles of multielectron transfer and rational porous crystal framework,we creatively propose the monoclinic Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O(CVO)as a novel anode for ***,inspired by the metastable nature of CVO under high temperature/pressure,we skillfully design a facile hydrothermal recrystallization strategy without the phase change and surfactants ***,for the first time,the porous composite of Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts covered in situ by reduced graphene oxide(CVO NBs/r GO)was assembled,greatly improving the deficiencies of *** used as a novel anode for PIBs,CVO NBs/r GO delivers large specific capacity(up to 551.4 m Ah g^(-1.at 50 m A g^(-1.),high-rate capability(21..3 m Ah g^(-1.at 2.5 A g^(-1.)and super durability(203.6 m Ah g^(-1.at 500 m A g^(-1.even after 1.00 cycles).The outstanding performance can be ascribed to the synergistic merits of desirable structural features of monoclinic CVO nanobelts and the highly conductive graphene 3D network,thus promoting the composite material stability and electrical/ionic *** work reveals a novel metal vanadate-based anode material for PIBs,would further motivate the subsequent batteries research on M_(3)(OH)_(2)V_(2)O_(7)-n H_(2)O(M;Co,Ni,Cu,Zn),and ultimately expands valuable fundamental understanding on designing other high-performance electrode materials,including the combined strategies of multielectron transfer with rational porous crystal framework,and the composite fabrication of 1. electrode nanostructure with conductive carbon matrix.

关键词： Rational framework with multielectron transfer Novel potassium-ion batteries anode Hydrothermal recrystallization Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts Conductive graphene 3D network Synergistic effect

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