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Nano Research 2022年第5期15卷 3959-3963页

作者： Tai cao Rui Lin Shoujie Liu Weng-Chon(Max)Cheong Zhi Li Konglin Wu Youqi Zhu Xiaolu {1. Jian zhang Qiheng Li Xiao Liang Ninghua Fu Chen Chen Dingsheng {1. Qing Peng Yadong Li Department of Chemistry Tsinghua UniversityBeijing 100084China college of Chemistry and {1. science Anhui Normal UniversityWuhu 241000China Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of MacaoMacao SARChina Research Center of materials {1. Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsBeijing Institute of TechnologyBeijing 100081China

Efficient electroreduction of CO_(2) into CO and other chemicals turns greenhouse gases into fuels and value-added chemicals,holding great promise for a closed carbon cycle and the alleviation of climate ***,there are still challenges in the large-scale application of CO_(2) electroreduction due to the sluggish *** we develop a self-assembly strategy to synthesize a highly efficient CO_(2) reduction electrocatalyst with atomically dispersed Ni-N_(4) active centers anchored on polymerderived mesh-like N-doped carbon nanofibers(Ni-N_(4)/NC).The Ni-N_(4)/NC exhibits high selectivity for CO_(2) reduction reaction with CO Faradaic efficiency(CO FE)above 90% over a wide potential range from−0.6 to−1.0 V *** catalyst reaches a maximum CO FE up to 98.4% at−0.8 V with a TOF of 1.28×1.^(5) h^(–1. and Tafel slope of 1.3 mV·dec^(–1..The catalyst also exhibits remarkable stability,with little change in current density and CO FE over a 1.-hour durability test at–0.8 V *** method provides a new route for the synthesis of highly efficient CO_(2) reduction electrocatalyst.

关键词： CO_(2)reduction reaction Ni-N_(4)site Ni single atoms self-assembly

Trivalent Ni oxidation controlled through regulating lithium content to minimize perovskite interfacial recombination

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Rare Metals 2022年第1期41卷 96-105页

作者： Jin-Jin Zhao Xiao Su Zhou Mi Ying zhang Yan-Jun Hu Hua-Jun Guo Yi-Nan Jiao Yu-Xia zhang Yan Shi Wei-Zhong Hao Jing-Wei Wu Yi wang Cun-Fa Gao Guo-Zhong cao School of materials {1. and engineering School of Mechanical EngineeringShijiazhuang Tiedao UniversityShijiazhuang 050043China School of materials {1. and engineering Hebei Key Laboratory of Material Near Net Forming TechnologyHebei University of Science and TechnologyShijiazhuang 050018China State key {1. of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China Department of materials {1. and engineering University of WashingtonSeattleWA 98195-2120USA

Organic–inorganic hybrid perovskite solar cells,one of the most promising photovoltaic devices,have made great progress in their efficiency and preparation *** this study,uniform,highly conductive Li_(n)NiO_(x)(0≤n≤1.02+) as the interfacial *** on the amount of lithium doping,controlled interfacial oxidation was induced by Ni^(3+).The Li_(0.32)NiO_(x)inhibited charge recombination,reduced the defect density,and enhanced the photocurrent density.A maximum power conversion efficiency of 20.44%was obtained by Li_(0.32)NiO_(x).Further,in the long-term,in-air stabilities of unencapsulated Li_(n)-NiO_(x) perovskite solar cells were demonstrated.

关键词： Lithium ions Ni^(3+) Oxidized defect Photocurrent Perovskite solar cells

Epitaxial growth of single-crystalline Ni46Co4Mn37In1. thin film and investigation of its magnetoresistance

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Progress in Natural science:{1. International 2014年第1期24卷 19-23页

作者： Chao Jing Yejun Yang Xiaolong wang Pan Liao Dong Zheng Baojuan Kang Shixun {1. Jincang zhang Jie Zhu Zhe Li Department of Physics Shanghai University State key {1. of Surface Physics and Department of Physics Fudan University college of Physics and Electronic {1. Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education InstitutesQujing Normal University

Single-crystalline thin film of Ni46Co4Mn37In1.alloy grown on MgO(0 0 1. was prepared by Pulsed Laser Deposition(PLD) method. The epitaxial growth process was monitored by in situ Reflection High Energy Electron Diffraction(RHEED). Structure measurements reveal that the single-crystalline Ni46Co4Mn37In1.film could be stabilized on MgO(0 0 1. as a face-centered-cubic(fcc) structure. From the evolution of RHEED,it can be deduced from the patterns that Volmer-Weber growth mechanism(3-D) dominates at the initial stage. Then,it becomes layerby-layer growth mechanism(2-D) with the increase of the film thickness. Lastly,growth mechanism converts back to 3-D when the film is thick enough. Both electrical resistance and magnetoresistance(MR) were measured at various temperatures using Physical Property Measurement System(PPMS). The electrical resistance measurement indicates that the film sample does not have martensitic transformation in the measurement temperature range. However,with the temperature increasing,the film sample exhibits a transition from metallic to semiconductorlike properties. Moreover,a small negative magnetoresistance was observed at different temperature,which can be explained by the spindependent scattering of the conduction electrons.

关键词： Pulsed laser deposition Magnetoresistance

Facile synthesis of transition metal carbide nanoparticles embedded in mesoporous carbon nanosheets for hydrogen evolution reaction

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Rare Metals 2022年第7期41卷 2237-2242页

作者： Ying Yu Xuan-Li wang Hong-Kun {1. Zhi-Qin cao Hao-Yang Wu Bao-Rui Jia Jun-Jun Yang Xuan-Hui Qu Ming-Li Qin Institute for Advanced materials and {1. University of Science and Technology BeijingBeijing 100083China Inner Mongolia key {1. of Advanced Ceramics and Device School of Materials and MetallurgyInner Mongolia University of Science and TechnologyBaotou 014010China china United Test&Certification Co. LtdBeijing 101407China GRINM Group Corporation Limited Beijing 100088China college of Vanadium and Titanium Panzhihua UniversityPanzhihua 617000China Beijing Advanced Innovation Center of materials Genome {1. University of Science and Technology BeijingBeijing 100083China

Transition metal carbides(TMC)modified by mesoporous carbon nanosheets(MCNSs)with high activity,fast elec-tron/ion transfer and long durability are considered as promising electrocatalysts for hydrogen evolution react... 详细信息

关键词： carbide hydrogen carbides

Tensile Elastic Behavior of a Zr-Cu-Ag-Al Bulk Metallic Glass

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Journal of materials {1. & technology 2014年第6期30卷 595-598页

作者： Q.P.cao J.B.Jin Q.Yu X.D.{1. D.X.zhang Y.Jiang J.Z.Jiang International Center for New-Structured materials (ICNSM) State Key Laboratory of Silicon MaterialsDepartment of Materials Science and Engineering Zhejiang University Department of Mechanical engineering University of Nevada Reno NV 89557 USA State key {1. of Modern Optical Instrumentation Zhejiang University

Tensile elastic behavior of bulk Zr46（Cu4.5/5.5Ag1.5.5）46Al8 metallic glass was experimentally investigated. It exhibited linear and non-linear time-independent elastic deformation with a demarcative stress of approximately 500 MPa within the timescale in the present work, and repeated loading-unloading before yielding did not alter stress-strain relationship. The pure linear elastic strain limit is 0.6%, significantly lower than 2% as generally reported, but still much higher than 0.1. observed for typical crystalline alloys. Deviation from linear elastic behavior at stresses higher than 500 MPa is explained here as a macroscopic manifestation of local fluctuations in elastic strain, which becomes pronounced at stresses higher than the critical value. The occurrence of non-linear elasticity is possibly also related to the sinusoidal relationship between shear stress and atomic displacement.

关键词： Bulk metallic glass Tension test Elastic-plastic deformation

Aging Resistance Evaluation of Aged Paper Reinforced with Different Nanocelluloses

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Paper And Biomaterials 2023年第3期8卷 1-10页

作者： Xian cao Bei He Jianlin {1. Chunhui zhang Donglin Tang Qingyou Liang Chuanfu Liu Huiming Fan Junli Ren State key Lab of Pulp and Paper {1. School of Light Industry and EngineeringSouth China University of TechnologyGuangzhouGuangdong Province510640China Lingnan Literature Preservation Research Center South China University of TechnologyGuangzhouGuangdong Province510640China School of materials {1. and engineering South China University of TechnologyGuangzhouGuangdong Province510640China Analytical and Testing Center South China University of TechnologyGuangzhouGuangdong Province510640China

Paper documents experience severe acidification and *** is an excellent reinforcement material for paper documents owing to its compatibility and excellent mechanical ***,little research has been conducted on the aging resistance of nanocellulose-reinforced *** this study,six types of nanocelluloses were used to reinforce aged *** reinforcement and anti-aging performances were evaluated,and the anti-aging mechanism was further *** with a high degree of polymerization can better enhance aged paper,and non-chemical nanocellulose also shows better anti-aging performance,such as nanocellulose prepared by mechanical or biological ***,nanocellulose prepared using chemical methods exhibits poor reinforcement and anti-aging *** is because it has a small particle size that is not beneficial for physical crosslinking with paper *** importantly,the introduction of acidic or oxidizing groups on nanocellulose accelerates the acid hydrolysis and oxidation rate of paper fibers,especially nanocellulose prepared by 2,2,6,6-tetramethylpiperidine-1.oxyl oxidation,which should not be used to protect paper documents.

关键词： protection of paper documents nanocellulose reinforcement aging resistance

Improving electrical and thermal properties synchronously via introducing CsPbBr_(3)QDs into higher manganese silicides

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Journal of materials {1. & technology 2022年第16期111卷 279-286页

作者： Qing wang Zhiliang Li Xiaofeng Yang Xin Qian Linjuan Guo Jianglong wang Dan zhang Shu-Fang wang key {1. of High-precision Computation and Application of Quantum Field Theory of Hebei Province College of Physics Science and TechnologyHebei UniversityBaoding 071002China Hebei key Lab of Optic-Electronic Information and {1. College of Physics Science and TechnologyHebei UniversityBaoding 071002China

Higher manganese silicide(HMS)is a P-type medium temperature thermoelectric(TE)material,which has attracted widespread attention over the past few decades due to its remarkable mechanical properties,excellent chemical and thermal stability,as well as the non-toxicity,abundance and competitive *** peak power factor(PF)of HMS is as high as~1.50×1.^(-3)W m^(-1.K^(-2)because of its intrinsic high electrical conductivity and Seebeck ***,the thermal conductivity of HMS is also high,resulting in relatively low z T *** nano-dispersion in the matrix is one of the most effective methods to enhance the TE properties via reducing the lattice thermal conductivity significantly without drastic changes on the other *** this study,Cs Pb BrQDs with uniform size were synthesized and introduced into HMS *** PF(at 823 K)was enhanced to 1.71.1.^(-3)W m^(-1.K^(-2),which is improved 1..0%approximately compared with that of pure HMS owing to the combined effect of element doping and energy *** lattice thermal conductivity(at 823 K)decreased from 2.56W mKto 1.99 W mKsynchronously(~22.0%)due to the intensive phonon scattering caused by Cs doping,and the embedding of Pb riched CsPbBr_(3)QDs and Pb QDs.A maximum z T value of 0.57(823 K)is achieved in Cs Pb BrQDs/HMS composites,which is 36.0%higher than that of pure ***,for other TE materials,it is also feasible to improve the TE properties via introducing metastable quantum dots.

关键词： Thermoelectric material Higher manganese silicide Quantum dot Figure of merit Inclusion

Tempering mechanism of lath martensite induced in IF steel under high pressure

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Journal of materials {1. & technology 2023年第29期160卷 148-160页

作者： Zuohua wang Haidong Sun Xiaogang Guo Peng wang Ning Liu Dongli Yu Hongwang zhang National engineering Research Center for Equipment and {1. of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China State key {1. of metastable materials science and technology Yanshan UniversityQinhuangdao 066004China Liren college of{1. Yanshan UniversityQinhuangdao 066004China

In this paper,low-and high-strength lath martensite(350 and 640 HV)was fabricated in an IF steel via high pressure martensitic *** microstructure and the softening during their tempering from 200°C to 800°C for 1.h were systematically investigated.A carbon-irrelevant tempering process was proposed,exhibiting a three-stage structural evolution pattern depending upon the tempering de-gree(1.(HV-HV FP)/(HV NP-HV FP),where the HV is the instant hardness,HV NP is the non-tempered hard-ness and HV FP is the fully tempered hardness):(1.low tempered(1.%),removing the loose dislocations and dislocation boundaries within martensitic variants;(2)medium tempered(1.%-50%),eliminating the martensitic variant laths via the migration of their terminal tips;(3)highly tempered(>50%),clearing up the remained variant laths via the migration of the triple ***-type microstructure is tailored by low-index lamellar variant boundaries and is thus intrinsically thermally stable,whereas the mobile terminal tips decrease the tempering *** underlying mechanism for such carbon-irrelevant process was discussed and the potential effect on the tempering behavior of carbon-contained martensite was highlighted.

关键词： Tempering mechanism Lath martensite IF steel Terminal tip migration High pressure

Balancing the anionic framework polarity for enhanced thermoelectric performance in YbMg_(2)Sb_(2) Zintl compounds

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Journal of Materiomics 2019年第4期5卷 583-589页

作者： Zongwei zhang Xinyu {1. Yijie Liu Chen Chen Honghao Yao Li Yin Xiaofang Li Shan Li Fan zhang Fengxian Bai Jiehe Sui Bo Yu Feng cao Xingjun Liu Jun Mao Guoqiang Xie Qian zhang Department of materials {1. and engineering Institute of Materials Genome&Big DataHarbin Institute of TechnologyShenzhen518055China School of science Harbin Institute of TechnologyShenzhen518055China State key {1. of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China Department of Physics and TcSUH University of HoustonHoustonTX77204USA Ningbo Fengcheng Advanced Energy materials Research Institute Fenghua DistrictNingboZhejiang315500China

1.2-2-type Zintl phase compound has aroused great interest for potential thermoelectric ***,YbMg_(2)Sb_(2) is seldom studied due to the very low electrical conductivity resulting from the large difference in the electronegativity between Mg and *** this paper,we adjust the covalently bonded network of MgeSb by replacing part of the Mg with Zn which has the electronegativity closer to that of *** decreased polarity in the anionic framework offers more free distance for electrons for the enhanced Hall mobility and electrical *** with the increased point defect and the decreased lattice thermal conductivity by introduction of Zn,the maximum ZT value of ~0.8 at 773 K is achieved in YbMg_(0.9)Zn_(1.1.Sb_(2) which is~1.0% enhancement compared with that of YbMg_(2)Sb_(2).

关键词： Thermoelectric Zintl phase YbMg_(2)Sb_(2) Polarity Electronegativity

Hydrolytic dehydrogenation of ammonia borane catalyzed by poly(amidoamine) dendrimers-modified reduced graphene oxide nanosheets supported Ag_(0.3)Co_(0.7) nanoparticles

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Journal of materials {1. & technology 2018年第12期34卷 2350-2358页

作者： Dandan Ke Jin wang Hongming {1. Yuan Li Lu {1. Xin Zhao Shumin Han Hebei key {1. of Applied Chemistry School of Environmental and Chemical EngineeringYanshan University State key {1. of metastable materials science and technology Yanshan University School of materials and Metallurgy Inner Mongolia University of Science and Technology

Poly(amidoamine) dendrimers-modified reduced graphene oxide nanosheets(PAMAM/rGO) composite was selected as a carrier of heterogeneous Ag0.3Co0.7nanoparticles in order to obtain an excellent catalyst for ammonia borane(AB) hydrolysis. During the synthetic processes, GO could easily assembled with PAMAM by the electrostatic and hydrogen-bonding interactions. Structural characterization revealed that Ag0.3Co0.7bimetallic nanoparticles with uniform size distribution of 5 nm are well dispersed on PAMAM/rGO composite architecture. Ag0.3Co0.7@PAMAM/rGO was found to be a highly active and reusable catalyst in hydrogen generation from the hydrolysis of AB with a turnover frequency value(TOF) of 1..79 molH2min-1.olM-1.t 25.0±0.1. and retained 75.4% of their initial activity with a complete release of hydrogen in five runs. The relatively high TOF value and low apparent activation energy(34.21.kJ mol-1. make these Ag0.3Co0.7@PAMAM/rGO NPs as a high-efficient catalyst for catalytic dehydrogenation of AB facilitating the development of practically applicable energy storage {1..

关键词： Ammonia borane Reduced graphene oxide Ammonia borane Ag_(0.3)Co_(0.7) bimetallic nanoparticles Hydrolytic dehydrogenation