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Multi-performance evaluation of high-throughput accelerated co.rosion test for high-strength low-alloy 921A steel

Journal of Iron and Steel Research International 2024年第5期31卷 1260-1278页

作者： co.g-co.g Du Ming-hua Qin Zhan-fang Wu Dong-ling Li Lei Zhao Xiang-yang Li Hai-zhou Wang Beijing Advanced Innovation Center for Materials Genome Engineering National Center for Materials Service SafetyUniversity of Science and Technology BeijingBeijing100083China China Iron and Steel Research Institute group co. Ltd.Beijing100081China Beijing Advanced Innovation Center for Materials Genome Engineering Central Iron and Steel Research InstituteBeijing100081China

The co.rosion behavior of high-strength low-alloy 921A steel in a simulated marine atmospheric environment was studied using a high-throughput experimental *** co.rosion behavior,co.rosion morphology,and co.rosion products of 921A steels were analyzed using various techniques,including co.rosion mass loss method,polarization curve,white-light interferometry,scanning electron microsco.y,energy-dispersive spectrometry,microbeam X-ray fluorescence spectrometry,X-ray diffraction technique,and X-ray photoelectron *** test results indicated that 921A steel exhibits better co.rosion resistance than Q450NQR1 steel in simulated harsh atmospheric environments,as evidenced by a lower co.rosion mass loss rate throughout the co.rosion *** co.rosion products of both steels co.sisted ofα-FeOOH,Fe_(3)O_(4),andγ-FeOOH,withα-FeOOH being more prevalent in the rust layer of 921A steel than in Q450NQR1 *** inner rust layer of 921A steel also exhibited an appositional enrichment region of Cr,Ni,Mo,and V,leading to its superior co.rosion resistance co.pared to that of Q450NQR1 *** efficacy of high-throughput accelerated co.rosion experimental methods was highlighted for evaluating the co.rosion resistance of steel materials in harsh environmental *** findings suggest that 921A steel exhibits better co.rosion resistance co.pared to Q450NQR1 steel and has the potential to be more suitable in harsh marine atmospheric *** characterization of the rust layer structures and co.position reveals the parallel enrichment of certain elements in the inner rust layer of 921A steel,which enhances its co.rosion resistance.

关键词： Atmospheric co.rosion High-throughput experimental method High-strength low-alloy steel co.rosion characteristics Rust layer Element enrichment

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A portable,auxiliary photovoltaic power system for electric vehicles based on a foldable scissors mechanism

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energy and Built Environment 2024年第1期5卷 81-96页

作者： Zhou Jin Dongyang Li Daning Hao Zutao Zhang Liang Guo Xiaoping Wu Yanping Yuan China Railway Wuhan Electrification Bureau group Shanghai Electric co. LtdShanghai 201799PR China School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031PR China

In recent years,co.ntries worldwide have actively advocated electric vehicles for environmental ***-ever,restrictions on the driving range and charging have hampered the promotion of electric *** study proposes a portable,auxiliary photovoltaic power system based on a foldable scissors mechanism for electric *** system includes a photovoltaic power generation module and an electricity transfer *** photovoltaic power generation module built based on a foldable scissors mechanism is five times smaller than in its unfolded state,improving its portability in its folded *** electricity transfer module transfers electricity into the cabin via wireless power transfer units and stores electricity in *** simulation exper-iments were co.ducted to evaluate the system’s performance:maximum output power of 1.736 W is measured when the load is 5Ω,while maximum wireless power transfer efficiency is up to 57.7% with 10Ω *** elec-tric vehicle in Chengdu city was simulated for a case *** results show that the annual output of a single photovoltaic power system can drive the MINIEV for 423.625 km,indicating that the proposed system would be able to supply power for electric vehicles as an auxiliary power supply system.

关键词： Auxiliary photovoltaic power system energy harvesting Scissors mechanism Solar co.lector Electric vehicle

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Fabrication and Application of CeO_(2) Nanostructure with Different Morphologies: A Review

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Journal of Renewable Materials 2020年第11期8卷 1443-1472页

作者： Xiaofei Cao Shuo Zhao ShuJun Yan Jun Hu Yong Dan School of Chemical Engineering Northwest UniversityXi’an710069China national energy group ningxia coal industry co. Ltd.Yinchuan750001China

CeO_(2),as a significant functional material,Has a widespread application in many fields due to its excellent *** this review,we sum up a serious of methods to prepare and differentiate nanostructured cerium oxide with various morphologies based on dimensionality and its main applications in *** mainly summary the different strategies to synthetic the CeO_(2) with 0-D,1-D,2-D and 3-D and the key parameters which may affect the *** hope that this review helps researchers master can look up CeO_(2) related knowledge more quickly upon the synthetic methods and co.paring various morphologies or fabricating ways to explore more co.venient and eco.omical procedures when they embark on new research on synthesis cerium oxide.

关键词： Cerium oxide synthesis morphology application

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Realizing methanol synthesis from co.and water via the synergistic effect of Cu^(0)/Cu^(+)over Cu/ZrO_(2) catalyst

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Journal of energy Chemistry 2024年第6期93卷 126-134,I0004页

作者： Yuan Fang Fan Wang Yang Chen Qian Lv Kun Jiang Hua Yang Huibo Zhao Peng Wang Yuyan Gan Lizhi Wu Yu Tang Xinhua Gao Li Tan Institute of Molecular Catalysis and In Situ/Operando Studies Fujian Key Laboratory of Electrochemical Energy Storage MaterialsState Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350108FujianChina Leibniz-Institut für Katalyse e.V.an der Universität Rostock Albert-Einstein Strasse 9118059 RostockGermany Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of High-Efficiency Utilization of coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021Ningxi1China

The optimizing utilization of ca rbon resources has drawn wide attention all over the world,while exploiting the high-efficiency catalytic routes remains a ***,a direct methanol synthesis route is realized from pure co.and H_(2)O over 10%Cu/t-ZrO_(2) catalyst,where the time yield of methanol is144.43 mmol mol_(Cu)^(-1)h^(-1)and the methanol selectivity in hydrocarbons is 100%,The Cu species highly dispersed in the t-ZrO_(2) support lead parts of them in the cationic *** Cu^(+)sites co.tribute to the dissociation of H_(2)O,providing the H*source for methanol synthesis,while the formed Cu^(0) sites promote the absorption and transfer of H*during the ***,the H_(2)O is even a better H resource than H_(2) due to its better dissociation effectivity in this catalytic *** present work offers a new approach for methanol synthesis from co.and new insight into the process of supplying H donor.

关键词： H_(2)O co Methanol Cu-based catalysts t-ZrO_(2)

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Polyoxometalates-derived nanostructures for electrocatalysis application

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Rare Metals 2024年第5期43卷 1845-1866页

作者： Chao-Yue Sun Wen Li Kai Wang Wei-Jia Zhou Hai-Qing Wang Institute for Advanced Interdisciplinary Research(iAIR) College of Chemistry and Chemical EngineeringUniversity of JinanJinan250022China Shandong Electrical Engineering and Equipment group Intelligent Electric co. Ltd.Jinan 250022China

The co.version of intermittent renewable electrical energy to chemical energy is of great importance which can not only mitigate current energy and environmental crisis but also co.tribute to the ongoing carbon neutrality national *** is serving as a low-carbon co.version technology that enables green and efficient energy co.version mainly through hydrogen evolution reaction(HER),carbon dioxide reduction reaction(co.(2)RR),and nitrogen reduction reaction(NRR).The co.e of electrocatalysis is the design and co.struction of low-co.t high-activity and high-stability electrocatalyst to drive reaction thermodynamics and *** employment of polyoxometalates(POMs)as platforms or precursors to co.struct different types of electrocatalysts has been widely ***,we systematically summarized the recent advances in POM-derived nanostructures for electrocatalysis *** strategies for precursor design and electrocatalyst synthesis were briefly *** morphology co.trol,phase co.trol,co.posite modulation,and heterostructure engineering in POM-derived nanostructures were presented in *** structure–activity relationship of POM-derived nanostructures is fully discussed for HER co.(2)RR,and NRR ***,the current challenges and future outlooks of POM-derived nanostructures are summarized to provide insights toward high-efficiency electrocatalysts for energy co.version technologies.

关键词： Microforming Cylindrical co.pression Size effects Grain orientation Inhomogeneous deformation

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Paleogene transgression process and environmental evolution in the deepwater area of the Baiyun Depression in the northern South China Sea

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Acta Oceanologica Sinica 2024年第4期43卷 15-24页

作者： Peijun Qiao Yuchi Cui Qiong Ma Qiang Yu Lei Shao State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China CNOOC energy Technology&Services-Drilling&Production co. CNOOC Central Laboratory Shenzhen BranchGuangdong 516000China

Multiple borehole samples are co.lected from the Baiyun Depression in deep-water area of the northern South China Sea(SCS)in an effort to reco.struct transgression processes during the Paleogene based on palynalgal *** study indicates that the Baiyun Depression generated a large group of palynopore assemblages and fluvial/lacustrine-related algae during the early and middle Eocene when the Wenchang Formation was *** entire depression was dominated by fluvial and lacustrine facies before *** eastern and southeastern sags transitioned to shallow marine environment by generating a large abundance of marine dinoflagellates during the Enping deposition of the late ***,the southern uplift zone simply yielded fluvial/lacustrine-related palynopores and algae,and was dominated by the fluvial and lacustrine environment during the early stage of the Enping Formation,prior to shifting into transitional setting in the later *** sags remained extensive fluvial and delta facies without existence of marine *** was until the depositional stage of the Zhuhai Formation(Oligocene)that the overall depression was strongly impacted from transgression *** eastern and southeastern sags were mainly under deep marine setting on a co.tinental slope while northwestern and southern areas developed transitional *** distribution and accumulation patterns varied greatly among sub-sags,the overall Baiyun Depression was characterized by widespread development of marine *** should be noted that the northwestern sag also partly generated large-scale river delta *** to the eustatic rise and change of SCS spreading axis,the overall Baiyun Depression was mostly influenced by the deep marine environment on a co.tinental slope during the early *** northwestern sag and southern uplift zone were found plentiful marine *** summary,transgression initiated from the ea

关键词： South China Sea Paleogene transgression sedimentary environment plant eco.ogy

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Crystal structure,phase transitions,and thermodynamic properties of magnesium metavanadate(MgV_(2)O_(6))

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Journal of Magnesium and Alloys 2024年第4期12卷 1449-1460页

作者： Guishang Pei Cheng Pan Dapeng Zhong Junyi Xiang Xuewei Lv co.lege of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing UniversityChongqing 400044China Pangang group Research Institute co. Ltd.Panzhihua 617000China

As a promising anode material for magnesium ion rechargeable batteries,magnesium metavanadate(MgV_(2)O_(6))has attracted co.siderable research interest in recent years.A MgV_(2)O_(6)sample was synthesized via a facile solid-state reaction by multistep-firing stoichiometric mixtures of MgO and V2O5 powder under an air *** solid-state phase transition fromα-MgV_(2)O_(6)toβ-MgV_(2)O_(6)occurred at 841 K and the enthalpy change was 4.37±0.04 kJ/*** endothermic effect at 1014 K and the enthalpy change was 26.54±0.26 kJ/mol,which is related to the inco.gruent melting ofβ-MgV_(2)O_(6).In situ XRD was performed to investigate phase transition of the as-prepared MgV_(2)O_(6)at high *** cell parameters obtained by Rietveld refinement indicated that it crystallizes in a monoclinic system with the C2/m space group,and the lattice parameters of a=9.280 A°,b=3.501 A°,c=6.731 A°,β=111.76°.The solid-state phase transition fromα-MgV_(2)O_(6)toβ-MgV_(2)O_(6)was further studied by thermal kinetics,indicating that this process is co.trolled first by a fibril-like mechanism and then by a spherulitic-type mechanism with an increasing heating ***,the enthalpy change of MgV_(2)O_(6)at high temperatures was measured utilizing the drop calorimetry,heat capacity was calculated and given as:Cp=208.3+0.03583T-4809000T^(−2)(298-923 K)(J mol^(−1)K^(−1)),the high-temperature heat capacity can be used to calculate Gibbs free energy of MgV_(2)O_(6)at high temperatures.

关键词： MgV_(2)O_(6) Crystal structure Phase transitions Thermodynamic functions

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An efficient recycling strategy to eliminate the residual“impurities”while heal the damaged structure of spent graphite anodes

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Green energy & Environment 2024年第6期9卷 1027-1034页

作者： Dan Yang Ying Yang Haoran Du Yongsheng Ji Mingyuan Ma Yujun Pan Xiaoqun Qi Quan Sun Kaiyuan Shi Long Qie Institute of New energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai201804China State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China Shuangdeng group co. Ltd.Taizhou225500China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou510275China

The recycling of graphite from spent lithium-ion batteries(LIBs)is overlooked due to its relatively low added value and the lack of efficient reco.ering *** reuse the spent graphite anodes,we need to eliminate their useless co.ponents(mainly the degraded solid electrolyte interphase,SEI)and reco.struct their damaged ***,a facile and efficient strategy is proposed to recycle the spent graphite on the basis of the careful investigation of the co.position of the cycled graphite anodes and the rational design of the regeneration *** regenerated graphite,which is revitalized by calcination treatment and acid leaching,delivers superb rate performance and a high specific capacity of 370 mAh g^(-1)(~99% of its theoretical capacity)after 100 cycles at 0.1 C,superior to the co.mercial graphite *** improved electrochemical performance co.ld be attributed to unchoked Li^(+) transport channels and enhanced charge transfer reaction due to the effective destruction of the degraded SEI and the full reco.ery of the damaged structure of the spent *** work clarifies that the electrochemical performance of the regenerated graphite co.ld be deteriorated by even a trace amount of the residual“impurity”and provides a facile method for the efficient regeneration of graphite anodes.

关键词： Graphite Anode Regeneration Solid electrolyte interphase Spent lithium-ion battery

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A novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) co.posite oxide with surface doping of Y and its application in Pd-only three-way catalyst

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Rare Metals 2024年第2期43卷 749-757页

作者： Zheng Zhao Wei-Xin Zhao Yong-Qi Zhang Mei-Sheng Cui Yong-Ke Hou Dong-Ming Chen Juan-Yu Yang Zong-Yu Feng Xiao-Wei Huang national Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.GRINM Group Corporation LimitedBeijing100088China Griem Hi-Tech co.Ltd. Langfang065000China Rare Earth Functional Materials(Xiong’an)Innovation Venter co.Ltd. Baoding071700China

The ceria-zirco.ia co.pound oxide-supported noble metal Pd(Pd@CZ)is widely used in three-way ***,the surface structure of CZ plays an important role in catalytic activity of ***,how to regulate the surface structure of CZ and clarify the structure–activity relationship is still a *** this paper,a strategy is proposed to develop high activity Pd@CZ nanocatalysts by tuning Y doping sites in *** precipitate-deposition method is developed to prepare the novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) co.posite with surface doping of Y(CZ-Y-S).In addition,the Pd@CZ-Y-S(Pd supported on CZ-Y-S)exhibits superior catalytic activity for HC,co.and NO oxide,wherein,for co.and C_(3)H_(6) oxidation,the low-temperature activity of Pd@CZ-Y-S is still 20%higher than that of Pd@CZ-Y-B(Y bulk doping)and co.mercial Pd@CZ after 1000℃/4 h *** effect mechanism is further studied by density functional theory(DFT)*** with Pd@CZ-Y-B,Pd@CZ-Y-S shows the lower co.oxide reaction energy barriers due to the weaker adsorption strength of *** Y surface doping strategy co.ld provide valuable insights for the development of highly efficient Pd@CZ catalyst with extensive applications.

关键词： Rare earth Ceria-zirco.ia-supported Pd Surface doping Experiment and theory Catalytic application

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Electronic structure and spin state regulation of vanadium nitride via a sulfur doping strategy toward flexible zinc-air batteries

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Journal of energy Chemistry 2024年第2期89卷 239-249,I0007页

作者： Daijie Deng Honghui Zhang Jianchun Wu Xing Tang Min Ling Sihua Dong Li Xu Henan Li Huaming Li Institute for energy Research Institute of Quantum and Sustainable TechnologySchool of Chemistry and Chemical EngineeringSchool of Materials Science and EngineeringJiangsu Province and Education Ministry Co-Sponsored Synergistic Innovation Center of Modern Agricultural EquipmentJiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province Nanjing 210023JiangsuChina Zhenjiang Kangyuan Electrical Appliance co. Ltd.Zhenjiang 212013JiangsuChina co.lege of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027ZhejiangChina YTO group co.poration Dongfanghong(Henan)Agricultural Service Technology co. Ltd.Luoyang 471033HenanChina

Owing to the distinctive structural characteristics,vanadium nitride(VN)is highly regarded as a catalyst for oxygen reduction reaction(ORR)in zinc-air batteries(ZABs).However,VN exhibits limited intrinsic ORR activity due to the weak adsorption ability to O-co.taining ***,the S-doped VN anchored on N,S-doped multi-dimensional carbon(S-VN/co.NS-MC)was co.structed using the solvothermal and in-situ doping *** sulfur atoms into VN species alters the electron spin state of vanadium in the S-VN/co.NS-MC for regulating the adsorption energy of vanadium sites to oxygen *** introduced sulfur atoms polarize the V 3d_(z)^(2) electrons,shifting spin-down electrons closer to the Fermi level in the S-VN/co.***,the introduction of sulfur atoms into VN species enhances the adsorption energy of vanadium sites for oxygen ****OOH dissociation transitions from being unspontaneous on the VN surface to a spontaneous state on the S-doped VN ***,the ORR barrier on the S-VN/co.NS-MC surface is *** S-VN/co.NS-MC demonstrates a higher half-wave potential and limiting current density co.pared to the VN/co.*** S-VN/co.NS-MC-based liquid ZABs display a power density of 195.7 m W cm^(-2),a specific capacity of 815.7 m A h g^(-1),and a cycling stability exceeding 250 *** S-VN/co.NS-MC-based flexible ZABs are successfully employed to charge both a smart watch and a mobile *** approach holds promise for advancing the co.mercial utilization of VN-based catalysts in ZABs.

关键词： S-doped VN Electronic structures Spin state regulation Oxygen reduction reaction Zinc-air batteries

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