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作者： Xu, Hongyan Shen, Yaochun Hu, Yihua Li, Jianqiang Xu, Ju Beijing Engineering Laboratory of Electrical Drive System and Power Electronic Device Packaging Technology Micro-Nano Fabrication Technology Department Institute of Electronic Engineering Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China School of Electrical Engineering Electronics and Computer Science University of Liverpool Brownlow Hill LiverpoolL69 3GJ United Kingdom State Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

A highly reliable three-dimensional network structure joint was fabricated based on Cu/Ni/Sn powder with double-layer coatings and transient liquid phase bonding (TLPB) technology for high temperature application. The Cu/Ni/Sn joint is characterized by Cu metal particles embedded in the matrix of (Cu,Ni)6Sn5/Ni3Sn4 intermetallic compounds (IMCs), with a low void ratio, and can be reflowed at low temperatures (6Sn5/ Ni3Sn4 IMCs, and the Cu/Ni/Sn joint had a lower void ratio and a higher shear strength than those of Cu/Sn. The mechanism of the Ni-coating layer inhibiting phase transformation was studied. The high reliable three-dimensional network structure joint based on Cu/Ni/Sn double-layer powder was fabricated for high temperature application. Copyright © International Microelectronics Assembly and Packaging Society

关键词： High temperature applications

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Cover Feature: Hollow Carbon Sphere-Modified Graphitic Carbon Nitride for Efficient Photocatalytic H2Production (Chem. Eur. J. 68/2021)

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Chemistry – A European Journal 2021年第68期27卷

作者： Dr. Jinghua Li Dr. Lunqiao Xiong Dr. Bing Luo Prof. Dengwei Jing Dr. Jiamei Cao Prof. Junwang Tang International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 P. R. China Department of Chemical Engineering University College London London WC1E 7JE UK School of Chemical Engineering and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 P. R. China

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Fabrication of highly reliable jointbased on Cu@Ni@Sn double-layerpowderfor high temperature application

Fabrication of highly reliable jointbased on Cu@Ni@Sn double...

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作者： Xu, Hongyan Shen, Yaochun Hu, Yihua Li, Jianqiang Xu, Ju Beijing Engineering Laboratory of Electrical Drive System & Power Electronic Device Packaging Technology Micro-nano fabrication technology department Institute of Electronic Engineering Chinese Academy of Sciences Beijing 100190 China School of Electrical Engineering Electronics andComputer Science University of Liverpool LiverpoolL69 3GJ United Kingdom State Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

A highly reliable three-dimensional networkstructure jointwas fabricatedbased on Cu@Ni@Sn core-shell powderand transient liquid phase bonding (TLPB) technologyfor high temperature application. Cu@Ni@Sn joint is characterized by Cu metal particles embedded in the matrix of (Cu,Ni)6Sn5/Ni3Sn4intermetallics (IMCs), low level of voiding is achieved, they can be reflowed at a low temperatures( © 2019 IMAPS-International Microelectronics and Packaging Society. All rights reserved.

关键词： High temperature applications

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Structure engineering of Graphitic Carbon Nitride for Efficient Photocatalytic Water Splitting

Structure Engineering of Graphitic Carbon Nitride for Effici...

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中国化学会第三届中国能源材料化学研讨会

作者：沈少华 International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong University

Photocatalytic overall water splitting without using sacrificial agents is very appealing for converting solar energy into chemical ***,polymer photocatalysts with tunable molecular structures have emerged as promisin... 详细信息

关键词： Structure engineering of Graphitic Carbon Nitride for Efficient Photocatalytic Water Splitting

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Co2 Capture Performance and Energy Recovery in Pilot-Scale Thermal Electrochemical Co-Drive System

SSRN

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SSRN 2019年

作者： Ding, Wancheng Yu, Yunsong Zhang, Zaoxiao Wang, Geoff School of Chemical Engineering and Technology Xi’an Jiaotong University No.28 Xianning West Road Xi’an710049 China State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University No.28 Xianning West Road Xi’an710049 China School of Chemical Engineering The University of Queensland St LuciaQLD4072 Australia

关键词： Greenhouse gases

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Modulating the Electronic Metal-Support Interactions in Single-Atom Pt1−CuO Catalyst for Boosting Acetone Oxidation

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Angewandte Chemie 2022年第28期134卷

作者： Dr. Zeyu Jiang Dr. Mingjiao Tian Dr. Meizan Jing Prof. Shouning Chai Dr. Yanfei Jian Dr. Changwei Chen Prof. Mark Douthwaite Dr. Lirong Zheng Dr. Mudi Ma Prof. Weiyu Song Prof. Jian Liu Prof. Jiaguo Yu Prof. Chi He State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 Shaanxi P. R. China Department of Chemistry National University of Singapore Singapore 117543 Singapore Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 P. R. China State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 P. R. China Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis School of Chemistry Cardiff University Cardiff CF10 3AT UK Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China National Engineering Laboratory for VOCs Pollution Control Material & Technology University of Chinese Academy of Sciences Beijing 101408 P. R. China

The development of highly active single-atom catalysts (SACs) and identifying their intrinsic active sites in oxidizing industrial hazardous hydrocarbons are challenging prospects. Tuning the electronic metal-support interactions (EMSIs) is valid for modulating the catalytic performance of SACs. We propose that the modulation of the EMSIs in a Pt 1 −CuO SAC significantly promotes the activity of the catalyst in acetone oxidation. The EMSIs promote charge redistribution through the unified Pt−O−Cu moieties, which modulates the d -band structure of atomic Pt sites, and strengthens the adsorption and activation of reactants. The positively charged Pt atoms are superior for activating acetone at low temperatures, and the stretched Cu−O bonds facilitate the activation of lattice oxygen atoms to participate in subsequent oxidation. We believe that this work will guide researchers to engineer efficient SACs for application in hydrocarbon oxidation reactions.

关键词： Acetone Oxidation Electronic Metal-Support Interactions Intrinsic Mechanism Single-Atom Catalysts

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Effect of proppant impingement on flow-induced corrosion of tubular steel super 13Cr via CFD and experiment

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Egyptian Journal of Petroleum 2018年第4期27卷 633-640页

作者： Cheng, J.R. Zhang, N.S. Cao, Y.P. Li, Z. Dou, Y.H. State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University No. 28 Xianning West Road Xi'an 710049 Shaanxi Province China Department of Petroleum Engineering Xi'an Shiyou University Xi'an 710065 Shaanxi Province China Department of Mechanical Engineering Xi'an Shiyou University Xi'an 710065 Shaanxi Province China

Data from a standard laboratory test including open-circuit potential (OCP) and current density monitoring is used to study the effect of fracturing proppant impingement on corrosion of tubular steel. A solid-liquid flow simulation is performed to obtain some parameters of particle movement and oxygen mass transfer near the metal surface. The results show that the electrochemical reaction includes passivation, activation and repassivation during a particle impact on the metal surface. Once the metal surface is in the activated state, the potential and anode current density is controlled by the oxygen concentration in the boundary layer and repassivation rate of metal surface. The increase of particle impact velocity accelerates the transmission of corrosion reactants and creates deeper impact craters on metal surface, resulting in the increase of current density. Meanwhile, the high speed particle impingement causes some platelets and extruding lips and thus weakens the surface corrosion resistance of stainless steel. © 2017

关键词： flow-induced corrosion Particle impingement Passive films Repassivation Tubular steel

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Current-Density Regulating Lithium Metal Directional Deposition for Long Cycle-Life Li Metal Batteries

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Angewandte Chemie 2021年第35期133卷

作者： Heng Mao Wei Yu Zhuanyun Cai Guixian Liu Limin Liu Rui Wen Yaqiong Su Huari Kou Kai Xi Benqiang Li Hongyang Zhao Xinyu Da Hu Wu Wei Yan Shujiang Ding Xi'an Key Laboratory of Sustainable Energy Materials Chemistry School of Chemistry Xi'an Jiaotong University & Shaanxi Quantong Joint Research Institute of New Energy Vehicles Power Xi'an Jiaotong University Xi'an 710049 China Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China Department of Mechanical Engineering University of Michigan-Dearborn Dearborn MI 48128 USA Department of Environmental Science and Engineering State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

Uncontrolled dendrite formation in the high energy density of lithium (Li) metal batteries (LMBs) may pose serious safety risks. While numerous studies have attempted to protect separators, these proposed methods fail to effectively inhibit upward dendrite growth that punctures through the separator. Here, we introduce a novel “orientated-growth” strategy that transfers the main depositional interface to the anode/current collector interface from the anode/separator interface. We placed a layer of cellulose/graphene carbon composite aerogel (CCA) between the current collector and the anode (LCL-bottom). This layer works as a charge organizer that induces a high current density and encourages Li to deposit at the anode/current collector interface. Both in situ and ex situ images of the electrode demonstrate that the anode part of the cell has been flipped; with the newly deposited particles facing the current collector and the smooth surface facing the separator. The electrode in half and full cells showed outstanding cyclic stability and rate capability, with the LCL-bottom/LFP full cell capable of maintaining 94 % of its initial capacity after 1000 cycles.

关键词： anode/separator interface depositional interface transfer lithium metal battery long cycles

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Numerical Study on flow Field of a Diameter-varying Spray Tower for Amine-based CO2 Absorption 14

Numerical Study on Flow Field of a Diameter-varying Spray To...

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14th International Conference on Greenhouse Gas Control Technologies, GHGT 2018

作者： Wu, Xiaomei Yu, Yunsong Zhang, Zaoxiao Wang, Geoff Rudolph, Victor School of Chemical Engineering and Technology Xi’an Jiaotong University No.28 Xianning West Road Xi’an710049 China State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an710049 China School of Chemical Engineering The University of Queensland St LuciaQLD4072 Australia

Our group proposed a diameter-varying spray tower and a new spray mode of dual-nozzle opposed impinging spray to enhance the absorption performance of CO2 spray absorption process and some interesting results have been obtained. However, the detailed information (flow field distribution) inside the tower is hard to be obtained by experimental work. In this work, to specifically explain the performance inside the proposed diameter-varying spray tower, ANSYS Fluent17.2 software was used to simulate gas-liquid two-phase flow inside the proposed diameter-varying spray tower. Two different spray methods are discussed in this work. One is the dual-nozzle opposed impinging spray method proposed by our research group, the other is mostly literature discussed spray in the middle method. The flow field of continuous gas phase and dispersed liquid phase has been carefully discussed to illustrate the better spray method, which do more good to the CO2 absorption performance. © 2018 GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies. All rights reserved.

关键词： Carbon dioxide

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Experimental Study on Combustion Adjustment for Dense-dilute Burning through Swirling Burner with Variable Flaring Angle

Experimental Study on Combustion Adjustment for Dense-dilute...

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2018 3rd International Conference on Automation, Mechanical and Electrical engineering (AMEE 2018)

作者： Ya-fei ZHANG Rui LUO Yi-hua DOU Mechanical Engineering College Xi'an Shiyou University Thermal Power Research Institute State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

A swirling burner with adjustable inner secondary air flaring angle is proposed and a laboratory-scale opposed-firing furnace is built. The effects of burner flaring angle on dense-dilute low-NO burning are experimentally studied. The temperature distributions along the depth and height direction of furnace are emphatically illustrated. NO emission and char burnout are compared and discussed. Experiment results indicate that under the dense-dilute burning conditions,variation of burner inner secondary air flaring promotes ignition conditions. Under different conditions of dense-dilute ratio, variation of burner flaring angle can help decreasing NO emission and improving char burnout. Finally the optimum flaring angle of swirling burner under different dense-dilute ratios is summarized in the form of curves, which could provide reference for exquisite and novel combustion adjustment.

关键词： Swirling burner Flaring angle Dense-dilute burning Coal combustion

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