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Robust tantalum tuned perovskite oxygen electrode for reversible protonic ceramic electrochemical cells

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Rare Metals 2024年第7期43卷 3055-3065页

作者： Yu-Shi Feng Yu shen.Fang Wang Chuan Tian Qin-Yi Hu Qian duan Jing-Wei Li di Bao School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China Zhongshan Institute of Changchun University of Science and Technology Zhongshan528437China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022China Key Laboratory of Preparation and Applications of Environmental Friendly Materials Ministry of EducationJilin Normal UniversityChangchun 130103China

Perovskite ox.d.s with diverse composition and structure have exhibited grand advances in boosting the oxygen reduction and evolution reaction(ORR/OER),which are essential for the reversible protonic ceramic electrochemical cell(R-PCEC)toward the sustainable hydrogen production and ***,enhancement of their activity and stability remains ***,we develop the Ta-regulated BaCo_(0.7)Fe_(0.3)O_(3-δ)perovskite oxygen electrode(Ba(Co_(0.7)Fe_(0.3))_(1-x)Ta_xO_(3-δ))with abundant oxygen defects and achieve the simultaneous enhancement in the electrocatalytic activity and stability toward ORR and ***-fabricated R-PCEC with(Ba(Co_(0.7)Fe_(0.3))_(0.9)Ta_(0.1)O_(3-δ))(BCFT10)oxygen electrode performs high power density of 1.47 W·cm^(-2)at 650℃in fuel cell mode,and the current density is up to-2.11 A·cm^(-2)at 1.4 V at 650℃in electrolysis mode,as well as the good stability in both the fuel cell and electrolysis ***,the cell also demonstrates a stable cycling operation between fuel cell and electrolysis mode,suggesting a great potential of BCFT10 as oxygen electrode material for R-PCECs.

关键词： Reversible protonic ceramic electrochemical cells Perovskite ox.d. Oxygen electrode Ta element doping Oxygen defects

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Finding Ordered State in a disordered Jungle

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Chinese Physics Letters 2024年第4期41卷 124-125页

作者：周晓东沈健 State Key Laboratory of Surface Physics and Institute for Nanoelectronic devices and Quantum Computing Fudan UniversityShanghai 200433China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China Shanghai Research Center for Quantum Sciences Shanghai 201315China

A rich portfolio of emergent phenomena has been discovered in twisted two-dimensional(2d)moirésystems,including strongly correlated insulators,[1]superconductivity,[2]integer and fractional Chern insulators(ChIs),[3-... 详细信息

关键词： integer twisted ferroelectric

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Recent advances in nickel-based catalysts in eCO_(2)RR for carbon neutrality

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Carbon Energy 2024年第2期6卷 61-91页

作者： Weikang Peng Fengfeng Li Shuyi Kong Chenxi Guo Haotian Wu Jiacheng Wang Yi shen.xianguang Meng Mingxi Zhang Hebei Key Laboratory of Inorganic Nonmetallic Materials School of Materials Science and EngineeringNorth China University of Science and TechnologyTangshanHebeiChina Hebei Iron and Steel Laboratory North China University of Science and TechnologyTangshanChina State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina School of Materials Science and Engineering Taizhou UniversityZhejiangChina

The excessive use of nonrenewable energy has brought about serious greenhouse *** CO_(2) into high-value-added chemicals is undoubtedly the best choice to solve energy *** to the excellent cost-effectiveness and dramatic catalytic performance,nickel-based catalysts have been considered as the most promising candidates for the electrocatalytic CO_(2) reduction reaction(eCO_(2)RR).In this work,the electrocatalytic reduction mechanism of CO_(2) over Ni-based materials is *** strategies to improve the eCO_(2)RR performance are ***,the research on Ni-based materials for syngas generation is briefly ***,the prospects of nickel-based materials in the eCO_(2)RR are provided with the hope of improving transition-metal-based electrocatalysts for eCO_(2)RR in the future.

关键词： carbon energy carbon neutrality CO_(2)reduction electrocatalysis nickel-based materials

Cell Wall Fixation,Translocation,and Vacuolar detoxification of Cadmium Contribute to differential Grain Cadmium Accumulation in Two Rice Cultivars

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Rice science 2024年第3期31卷 241-244,I0008-I0010页

作者： ZHU xiaofang ZHAO Ling HUANG Jing HE Jiatong SONG Jiayin TENG Ying shen.Renfang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of ScienceNanjing 210008China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China

Cadmium(Cd)toxicity in rice is a major concern for human health and the environment,as it can accumulate in rice grains when grown in Cd-contaminated *** mitigate the risk of Cd toxicity,it is crucial to cultivate rice varieties with low grain Cd *** the summers of 2021 and 2022,we conducted Cd analysis on two rice cultivars,Tianyouhuazhan(TYHZ)and xiushui 14,grown in fields with varying Cd pollution *** cultivars were also subjected to hydroponic treatment with or without 1μmol/L Cd for 7 d to assess Cd accumulation,nitric ox.d.(NO)production。

关键词： cultivar soils pollution

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Strengthening strategy for high-performance friction stir lap welded joints based on 5083 Al alloy

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International Journal of Minerals, Metallurgy and Materials 2024年第11期31卷 2498-2507页

作者： shen. Yujia Wang, Jijie Wang, Beibei xue, Peng Liu, Fengchao Ni, dingrui xiao, Bolv Ma, Zongyi College of Material Science and Engineering Shenyang Aerospace University Shenyang China Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang China Centre of Excellence for Advanced Materials Dongguan China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang China Binzhou Institute of Technology Shandong Key Laboratory of Advanced Aluminium Materials and Technology Binzhou China

during aircraft, ship, and automobile manufacturing, lap structures are frequently produced among Al alloy skins, wall panels, and stiffeners. The occurrence of welding defects severely decreases mechanical properties during friction stir lap welding (FSLW). This study focuses on investigating the effects of rotation rate, multipass welding, and cooling methods on lap defect formation, microstructural evolution, and mechanical properties. Hook defects were eliminated by decreasing welding speed, applying two-pass FLSW with a small welding tool, and introducing additional water cooling, thus leading to a remarkable increase in effective sheet thickness and lap width. This above strategy yielded defect-free joints with an ultrafine-grained microstructure and increased tensile shear force from 298 to 551 N/mm. The fracture behavior of FSLW joints was systematically studied, and a fracture factor of lap joints was proposed to predict their fracture mode. By reducing the rotation rate, using two-pass welding, and employing additional water cooling strategies, an enlarged, strengthened, and defect-free lap zone with refined ultrafine grains was achieved with a quality comparable to that of lap welds based on 7xxx Al alloys. Importantly, this study provides a valuable FSLW method for eliminating hook defects and improving joint performance.

关键词： friction stir lap welding defect control microstructure fracture mechanisms mechanical properties

Effect of cis/trans molecular structures on pyrolysis performance and heat sink of decalin isomers

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Frontiers of Chemical Science and Engineering 2024年第1期18卷 51-60页

作者： Qing Liu Kang xue Tinghao Jia Zhouyang shen.Zehao Han Lun Pan Ji-Jun Zou xiangwen Zhang Key Laboratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovative Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Zhejiang Institute of Tianjin University Ningbo 315201China

decalin is considered as an important compound of high-energy-density endothermic fuel,which is an ideal on-board coolant for thermal management of advanced ***,decalin contains two isomers with a tunable composition,and their effects on the pyrolysis performance,such as the heat sink and coking tendency have not been ***,we investigated the pyrolysis of decalin isomers,i.e.,cis-decalin,trans-decalin and their mixtures(denoted as mix.d.calin),in order to clarify the effects of the cis-/trans-structures on the pyrolysis performance of decalin *** pyrolysis results confirmed that conversion of the tested fuels(600–725℃,4 MPa)decreased in the order cis-decalin>mix.d.calin>*** analyses of the pyrolysis products were used to compare the product distributions from cis-decalin,mix.d.calin and trans-decalin,and the yields of some typical components(such as cyclohexene,1-methylcyclohexene,benzene and toluene)showed significant differences,which could be ascribed to deeper cracking of ***,the heat sinks and coking tendencies of the decalins decreased in the order cis-decalin>mix.d.calin>*** work demonstrates the relationship between the cis/trans structures and the pyrolysis performance of decalin,which provides a better understanding of the structure-activity relationships of endothermic hydrocarbon fuels.

关键词： endothermic fuel decalin pyrolysis heat sink molecular structure

Surface deterioration dependent on the crystal facets of spinel LiNi0.5Mn1.5O4 cathode active material

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Journal of Energy Chemistry 2024年第10期97卷 757-766页

作者： Qian Li Yan Zhao Jifu Zhu Wujiu Zhang Yi Liu Yaru Cui Chao shen.Keyu xie School of Metallurgical Engineering Xi'an University of Architecture and Technology Shaanxi Union Research Center of University and Enterprise for Cathode Materials of LIBs State Key Laboratory of Solidification Processing Center for Nano Energy Materials Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) CRRC Zhu Zhou Institute Co. Ltd.

The spinel LiNi0.5Mn1.5O4（LNMO） cathode active materials（CAMs） are considered a promising alternative to commercially available cathodes such as layered and polyanion ox.d. cathodes,primarily due to their notable safety and high energy density,particularly in their single-crystal ***,the industrial application of the LNMO CAMs is severely inhibited due to the interfacial deterioration and corrosion under proton-rich and high-voltage *** study successfully designed and synthesized two typical types of crystal facets-exposed single-crystal LNMO *** tracking the electrochemical deterioration and chemical corrosion evolution,this study elucidates the surface degradation mechanisms and intrinsic instability of the LNMO,contingent upon their crystal ***（111） facet,due to its elevated surface energy,is found to be more susceptible to external attack compared to the（100） and（110）*** study highlights the electrochemical corrosion stability of crystal plane engineering for spinel LNMO CAMs.

关键词： Chemical corrosion Crystal facets Electrochemical degradation LiNi0.5Mn1.5O4 Surface energy

Fluid property identification of the Lower Cretaceous reservoirs with complex oil-water contacts in deseo Basin,Chad

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Energy Geoscience 2024年第1期5卷 89-98页

作者： xinxin Zhang Lianfeng Zhu Tianjiao Wang xiaokang Shi Bo Han Jian shen.Hailei Gao Mud logging company Great Wall Drilling Company Ltd.CNPCLiaoningPanjin124010China CNPC Latin America Ltd. Beijing100034China CNPC Andes(Ecuador)Ltd. Beijing100034China

Recently,exploration breakthroughs have been made in the Lower Cretaceous sandstone reservoirs in the doseo Basin,but the identification of reservoir fluid property is difficult due to variable reservoir lithology,complex oil-water contact within and faint responses of the oil zone,which causes the lower accuracy of reservoir fluid property identification with conventional mudlogging and wirelogging *** the geochemical logging,fluorescent logging,mud logging and cutting logging technology,in combination with formation test data,this paper distinguishes the crude oil types,analyzes the logging response characteristics of oil zone after water washing,and establishes the interpretation charts and parameter standards for reservoir fluid *** crude oil can be divided into two types,namely viscous-heavy and thin-light,based on total hydrocarbon content and component concentration tested by mud logging,features of pyrolysis gas chromatogram and fluorescence *** general characteristics of oil layers experienced water washing include the decrease of total hydrocarbon content and component concentration from mud logging,the decrease of S1 and PS values from geochemical logging,the decrease of hydrocarbon abundance and absence of some light components in pyrolysis gas chromatogram,and the decrease of fluorescence area and intensity from fluorescence *** to crude oil types,the cross plots of S1 versus peak-baseline ratio,and the cross plots of rock wettability versus fluorescence area ratio are drawn and used to interpret reservoir fluid ***,the standards of reservoir fluid parameter are established combining with the parameters of PS and the parameters in above charts,and comprehensive multiparameter correlation in both vertical and horizontal ways is also performed to interpret reservoir fluid *** application in the doseo Basin achieved great success,improving interpretation ability of fluid property

关键词： doseo Basin Reservoir interpretation Oil-water contact Fluid property Crude oil type

LncRNA-CCAT5-mediated crosstalk between Wnt/β-Catenin and STAT3 signaling suggests novel therapeutic approaches for metastatic gastric cancer with high Wnt activity

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Cancer Communications 2024年第1期44卷 76-100页

作者： Chenchen Liu Aiwen shen.Junquan Song Lei Cheng Meng Zhang Yanong Wang xiaowen Liu department of Gastric Surgery Fudan University Shanghai Cancer CenterShanghaiP.R.China department of Oncology Shanghai Medical CollegeFudan UniversityShanghaiP.R.China department of Nephrology Shanghai Ninth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiP.R.China department of Pulmonary Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghaiP.R.China department of Pathology Fudan University Shanghai Cancer CenterShanghaiP.R.China

Background:Although the constitutively activated Wnt/β-catenin signaling pathway plays vital roles in gastric cancer(GC)progression,few Wnt inhibitors are approved for clinical ***,the clinical significance of long non-coding RNAs(lncRNAs)in GC intraperitoneal dissemination(IPd)remains ***,we investigated the function and therapeutic potential of Wnt-transactivated lncRNA,colon cancer-associated transcript 5(CCAT5),in GC ***:LncRNA-sequencing assay was performed to document abun-dance changes of lncRNAs induced by Wnt family member 3A(Wnt3a)and degradation-resistantβ-catenin(S33Y mutated)in ascites-derived GC cells with low Wnt *** reporter,Chromatin immunoprecipitation(ChIP)-re-ChIP assays were performed to determine how CCAT5 was *** clinical significance of CCAT5 was examined in 2 cohorts of GC *** biological function of CCAT5 was investigated through gain-and loss-of-function *** molecular mechanism was explored through RNA-sequencing,mass spectrometry,and CRISPR/Cas9-knocknout *** therapeutic potential of CCAT5 was examined through RNAi-based cell xenograft model and patient-derived xenograft(Pdx)model of ***:WeidentifiedanovelWnt-regulatedlncRNA,CCAT5,whichwastrans-activated by theβ-catenin/transcription factor 3(TCF3)***5 was significantly upregulated in GC and predicted poor *** studies confirmed the promotive role of CCAT5 in GC growth and ***-tically,CCAT5 bound to the C-end domain of signal transducer and activator of transcription 3(STAT3)and blocks Src homology 2 domain-containing protein tyrosine phosphatase 1(SHP-1)-mediated STAT3 Y705 dephosphorylation,leading to STAT3 nuclear entry and transactivation,thus accelerating GC ***,we demonstrated that both Wnt3a andβ-catenin acted as activa-tor of STAT3 signaling pathway,and the interplay between CCAT5 and STAT3 was functionally essential for Wnt-

关键词： CCAT5 gastric cancer intraperitoneal dissemination STAT3 Wnt/β-catenin